#!/usr/bin/env python
"""
TestCommonTests.py:  Unit tests for the TestCommon.py module.

Copyright 2000-2010 Steven Knight
This module is free software, and you may redistribute it and/or modify
it under the same terms as Python itself, so long as this copyright message
and disclaimer are retained in their original form.

IN NO EVENT SHALL THE AUTHOR BE LIABLE TO ANY PARTY FOR DIRECT, INDIRECT,
SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES ARISING OUT OF THE USE OF
THIS CODE, EVEN IF THE AUTHOR HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH
DAMAGE.

THE AUTHOR SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING, BUT NOT
LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
PARTICULAR PURPOSE.  THE CODE PROVIDED HEREUNDER IS ON AN "AS IS" BASIS,
AND THERE IS NO OBLIGATION WHATSOEVER TO PROVIDE MAINTENANCE,
SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS.
"""

__author__ = "Steven Knight <knight at baldmt dot com>"
__revision__ = "TestCommonTests.py 1.3.D001 2010/06/03 12:58:27 knight"

import difflib
import os
import re
import signal
import stat
import sys
import unittest

# Strip the current directory so we get the right TestCommon.py module.
sys.path = sys.path[1:]

import TestCmd
import TestCommon

def lstrip(s):
    lines = [ _.expandtabs() for _ in s.split('\n') ]
    if lines[0] == '':
        lines = lines[1:]
    spaces = len(re.match('^( *).*', lines[0]).group(1))
    if spaces:
        lines = [ l[spaces:] for l in lines ]
    return '\n'.join(lines)

if sys.version[:3] == '1.5':
    expected_newline = '\\012'
else:
    expected_newline = '\\n'

def assert_display(expect, result, error=None):
    try:
        expect = expect.pattern
    except AttributeError:
        pass
    result = [
        '\n',
        ('*'*80) + '\n',
        expect,
        ('*'*80) + '\n',
        result,
        ('*'*80) + '\n',
    ]
    if error:
        result.append(error)
    return ''.join(result)


class TestCommonTestCase(unittest.TestCase):
    """Base class for TestCommon test cases, fixture and utility methods."""
    create_run_env = True

    def setUp(self):
        self.orig_cwd = os.getcwd()
        if self.create_run_env:
            self.run_env = TestCmd.TestCmd(workdir = '')

    def tearDown(self):
        os.chdir(self.orig_cwd)

    def set_up_execution_scripts(self):
        run_env = self.run_env

        run_env.subdir('sub dir')

        self.python = sys.executable

        self.pass_script = run_env.workpath('sub dir', 'pass')
        self.fail_script = run_env.workpath('sub dir', 'fail')
        self.stdout_script = run_env.workpath('sub dir', 'stdout')
        self.stderr_script = run_env.workpath('sub dir', 'stderr')
        self.signal_script = run_env.workpath('sub dir', 'signal')
        self.stdin_script = run_env.workpath('sub dir', 'stdin')

        preamble = "import sys"
        stdout = "; sys.stdout.write(r'%s:  STDOUT:  ' + repr(sys.argv[1:]) + '\\n')"
        stderr = "; sys.stderr.write(r'%s:  STDERR:  ' + repr(sys.argv[1:]) + '\\n')"
        exit0 = "; sys.exit(0)"
        exit1 = "; sys.exit(1)"
        if sys.platform == 'win32':
            wrapper = '@python -c "%s" %%1 %%2 %%3 %%4 %%5 %%6 %%7 %%8 %%9\n'
        else:
            wrapper = '#! /usr/bin/env python\n%s\n'
        wrapper = '#! /usr/bin/env python\n%s\n'

        pass_body = preamble + stdout % self.pass_script + exit0
        fail_body = preamble + stdout % self.fail_script + exit1
        stderr_body = preamble + stderr % self.stderr_script + exit0

        run_env.write(self.pass_script, wrapper % pass_body)
        run_env.write(self.fail_script, wrapper % fail_body)
        run_env.write(self.stderr_script, wrapper % stderr_body)

        signal_body = lstrip("""\
        import os
        import signal
        os.kill(os.getpid(), signal.SIGTERM)
        """)

        run_env.write(self.signal_script, wrapper % signal_body)

        stdin_body = lstrip("""\
        import sys
        input = sys.stdin.read()[:-1]
        sys.stdout.write(r'%s:  STDOUT:  ' + repr(input) + '\\n')
        sys.stderr.write(r'%s:  STDERR:  ' + repr(input) + '\\n')
        """ % (self.stdin_script, self.stdin_script))

        run_env.write(self.stdin_script, wrapper % stdin_body)

    def run_execution_test(self, script, expect_stdout, expect_stderr):
        self.set_up_execution_scripts()

        run_env = self.run_env

        os.chdir(run_env.workpath('sub dir'))

        # Everything before this prepared our "source directory."
        # Now do the real test.
        script = script % self.__dict__
        run_env.run(program=sys.executable, stdin=script)

        stdout = run_env.stdout()
        stderr = run_env.stderr()

        expect_stdout = expect_stdout % self.__dict__
        assert stdout == expect_stdout, assert_display(expect_stdout,
                                                       stdout,
                                                       stderr)

        try:
            match = expect_stderr.match
        except AttributeError:
            expect_stderr = expect_stderr % self.__dict__
            assert stderr == expect_stderr, assert_display(expect_stderr,
                                                           stderr)
        else:
            assert expect_stderr.match(stderr), assert_display(expect_stderr,
                                                               stderr)


class __init__TestCase(TestCommonTestCase):
    def test___init__(self):
        """Test initialization"""
        run_env = self.run_env

        os.chdir(run_env.workdir)
        script = lstrip("""\
        from TestCommon import TestCommon
        tc = TestCommon(workdir='')
        import os
        print os.getcwd()
        """)
        run_env.run(program=sys.executable, stdin=script)
        stdout = run_env.stdout()[:-1]
        assert stdout != run_env.workdir, stdout
        stderr = run_env.stderr()
        assert stderr == "", stderr


class banner_TestCase(TestCommonTestCase):
    create_run_env = False
    def test_banner(self):
        """Test banner()"""
        tc = TestCommon.TestCommon(workdir='')

        b = tc.banner('xyzzy ')
        assert b == "xyzzy ==========================================================================", b

        tc.banner_width = 10

        b = tc.banner('xyzzy ')
        assert b == "xyzzy ====", b

        b = tc.banner('xyzzy ', 20)
        assert b == "xyzzy ==============", b

        tc.banner_char = '-'

        b = tc.banner('xyzzy ')
        assert b == "xyzzy ----", b

class must_be_writable_TestCase(TestCommonTestCase):
    def test_file_does_not_exists(self):
        """Test must_be_writable():  file does not exist"""
        run_env = self.run_env

        script = lstrip("""\
        from TestCommon import TestCommon
        tc = TestCommon(workdir='')
        tc.must_be_writable('file1')
        tc.pass_test()
        """)
        run_env.run(program=sys.executable, stdin=script)
        stdout = run_env.stdout()
        assert stdout == "Missing files: `file1'\n", stdout
        stderr = run_env.stderr()
        assert stderr.find("FAILED") != -1, stderr

    def test_writable_file_exists(self):
        """Test must_be_writable():  writable file exists"""
        run_env = self.run_env

        script = lstrip("""\
        import os
        import stat
        from TestCommon import TestCommon
        tc = TestCommon(workdir='')
        tc.write('file1', "file1\\n")
        f1 = tc.workpath('file1')
        mode = os.stat(f1)[stat.ST_MODE]
        os.chmod(f1, mode | stat.S_IWUSR)
        tc.must_be_writable('file1')
        tc.pass_test()
        """)
        run_env.run(program=sys.executable, stdin=script)
        stdout = run_env.stdout()
        assert stdout == "", stdout
        stderr = run_env.stderr()
        assert stderr == "PASSED\n", stderr

    def test_non_writable_file_exists(self):
        """Test must_be_writable():  non-writable file exists"""
        run_env = self.run_env

        script = lstrip("""\
        import os
        import stat
        from TestCommon import TestCommon
        tc = TestCommon(workdir='')
        tc.write('file1', "file1\\n")
        f1 = tc.workpath('file1')
        mode = os.stat(f1)[stat.ST_MODE]
        os.chmod(f1, mode & ~stat.S_IWUSR)
        tc.must_be_writable('file1')
        tc.pass_test()
        """)
        run_env.run(program=sys.executable, stdin=script)
        stdout = run_env.stdout()
        assert stdout == "Unwritable files: `file1'\n", stdout
        stderr = run_env.stderr()
        assert stderr.find("FAILED") != -1, stderr

    def test_file_specified_as_list(self):
        """Test must_be_writable():  file specified as list"""
        run_env = self.run_env

        script = lstrip("""\
        import os
        import stat
        from TestCommon import TestCommon
        tc = TestCommon(workdir='')
        tc.subdir('sub')
        tc.write(['sub', 'file1'], "sub/file1\\n")
        f1 = tc.workpath('sub', 'file1')
        mode = os.stat(f1)[stat.ST_MODE]
        os.chmod(f1, mode | stat.S_IWUSR)
        tc.must_be_writable(['sub', 'file1'])
        tc.pass_test()
        """)
        run_env.run(program=sys.executable, stdin=script)
        stdout = run_env.stdout()
        assert stdout == "", stdout
        stderr = run_env.stderr()
        assert stderr == "PASSED\n", stderr


class must_contain_TestCase(TestCommonTestCase):
    def test_success(self):
        """Test must_contain():  success"""
        run_env = self.run_env

        script = lstrip("""\
        from TestCommon import TestCommon
        tc = TestCommon(workdir='')
        tc.write('file1', "file1 contents\\n")
        tc.must_contain('file1', "1 c")
        tc.pass_test()
        """)
        run_env.run(program=sys.executable, stdin=script)
        stdout = run_env.stdout()
        assert stdout == "", stdout
        stderr = run_env.stderr()
        assert stderr == "PASSED\n", stderr

    def test_file_missing(self):
        """Test must_contain():  file missing"""
        run_env = self.run_env

        script = lstrip("""\
        from TestCommon import TestCommon
        tc = TestCommon(workdir='')
        tc.must_contain('file1', "1 c\\n")
        tc.pass_test()
        """)
        run_env.run(program=sys.executable, stdin=script)
        stdout = run_env.stdout()
        assert stdout == "", stdout
        stderr = run_env.stderr()
        assert stderr.find("No such file or directory:") != -1, stderr

    def test_failure(self):
        """Test must_contain():  failure"""
        run_env = self.run_env

        script = lstrip("""\
        from TestCommon import TestCommon
        tc = TestCommon(workdir='')
        tc.write('file1', "file1 does not match\\n")
        tc.must_contain('file1', "1 c")
        tc.run()
        """)
        expect = lstrip("""\
        File `file1' does not contain required string.
        Required string ================================================================
        1 c
        file1 contents =================================================================
        file1 does not match

        """)
        run_env.run(program=sys.executable, stdin=script)
        stdout = run_env.stdout()
        assert stdout == expect, repr(stdout)
        stderr = run_env.stderr()
        assert stderr.find("FAILED") != -1, stderr

    def test_mode(self):
        """Test must_contain():  mode"""
        run_env = self.run_env

        script = lstrip("""\
        from TestCommon import TestCommon
        tc = TestCommon(workdir='')
        tc.write('file1', "file1 contents\\n", mode='w')
        tc.must_contain('file1', "1 c", mode='r')
        tc.write('file2', "file2 contents\\n", mode='wb')
        tc.must_contain('file2', "2 c", mode='rb')
        tc.pass_test()
        """)
        run_env.run(program=sys.executable, stdin=script)
        stdout = run_env.stdout()
        assert stdout == "", stdout
        stderr = run_env.stderr()
        assert stderr == "PASSED\n", stderr



class must_contain_all_lines_TestCase(TestCommonTestCase):
    def test_success(self):
        """Test must_contain_all_lines():  success"""
        run_env = self.run_env

        script = lstrip("""
        import TestCommon
        test = TestCommon.TestCommon(workdir='')

        lines = [
            'xxx\\n',
            'yyy\\n',
        ]

        output = '''\\
        www
        xxx
        yyy
        zzz
        '''

        test.must_contain_all_lines(output, lines)

        test.must_contain_all_lines(output, ['www\\n'])

        test.pass_test()
        """)

        run_env.run(program=sys.executable, stdin=script)
        stdout = run_env.stdout()
        assert stdout == "", stdout
        stderr = run_env.stderr()
        assert stderr == "PASSED\n", stderr

    def test_failure(self):
        """Test must_contain_all_lines():  failure"""
        run_env = self.run_env

        script = lstrip("""
        import TestCommon
        test = TestCommon.TestCommon(workdir='')

        lines = [
            'xxx\\n',
            'yyy\\n',
        ]

        output = '''\\
        www
        zzz
        '''

        test.must_contain_all_lines(output, lines)

        test.pass_test()
        """)

        expect = lstrip("""\
        Missing expected lines from output:
            'xxx%(expected_newline)s'
            'yyy%(expected_newline)s'
        output =========================================================================
        www
        zzz
        """ % globals())

        run_env.run(program=sys.executable, stdin=script)
        stdout = run_env.stdout()
        stderr = run_env.stderr()
        assert stdout == expect, assert_display(expect, stdout, stderr)
        assert stderr.find("FAILED") != -1, stderr

    def test_find(self):
        """Test must_contain_all_lines():  find"""
        run_env = self.run_env

        script = lstrip("""
        import re
        import TestCommon
        test = TestCommon.TestCommon(workdir='')

        lines = [
            'x.*',
            '.*y',
        ]

        output = '''\\
        www
        xxx
        yyy
        zzz
        '''

        def re_search(output, line):
            return re.compile(line, re.S).search(output)
        test.must_contain_all_lines(output, lines, find=re_search)

        test.pass_test()
        """)

        run_env.run(program=sys.executable, stdin=script)
        stdout = run_env.stdout()
        assert stdout == "", stdout
        stderr = run_env.stderr()
        assert stderr == "PASSED\n", stderr

    def test_title(self):
        """Test must_contain_all_lines():  title"""
        run_env = self.run_env

        script = lstrip("""
        import TestCommon
        test = TestCommon.TestCommon(workdir='')

        lines = [
            'xxx\\n',
            'yyy\\n',
        ]

        output = '''\\
        www
        zzz
        '''

        test.must_contain_all_lines(output, lines, title='STDERR')

        test.pass_test()
        """)

        expect = lstrip("""\
        Missing expected lines from STDERR:
            'xxx%(expected_newline)s'
            'yyy%(expected_newline)s'
        STDERR =========================================================================
        www
        zzz
        """ % globals())

        run_env.run(program=sys.executable, stdin=script)
        stdout = run_env.stdout()
        stderr = run_env.stderr()
        assert stdout == expect, assert_display(expect, stdout, stderr)
        assert stderr.find("FAILED") != -1, stderr



class must_contain_any_line_TestCase(TestCommonTestCase):
    def test_success(self):
        """Test must_contain_any_line():  success"""
        run_env = self.run_env

        script = lstrip("""
        import TestCommon
        test = TestCommon.TestCommon(workdir='')

        lines = [
            'aaa\\n',
            'yyy\\n',
        ]

        output = '''\\
        www
        xxx
        yyy
        zzz
        '''

        test.must_contain_any_line(output, lines)

        test.must_contain_any_line(output, ['www\\n'])

        test.pass_test()
        """)

        run_env.run(program=sys.executable, stdin=script)
        stdout = run_env.stdout()
        assert stdout == "", stdout
        stderr = run_env.stderr()
        assert stderr == "PASSED\n", stderr

    def test_failure(self):
        """Test must_contain_any_line():  failure"""
        run_env = self.run_env

        script = lstrip("""
        import TestCommon
        test = TestCommon.TestCommon(workdir='')

        lines = [
            'xxx\\n',
            'yyy\\n',
        ]

        output = '''\\
        www
        zzz
        '''

        test.must_contain_any_line(output, lines)

        test.pass_test()
        """)

        expect = lstrip("""\
        Missing any expected line from output:
            'xxx%(expected_newline)s'
            'yyy%(expected_newline)s'
        output =========================================================================
        www
        zzz
        """ % globals())

        run_env.run(program=sys.executable, stdin=script)
        stdout = run_env.stdout()
        stderr = run_env.stderr()
        assert stdout == expect, assert_display(expect, stdout, stderr)
        assert stderr.find("FAILED") != -1, stderr

    def test_find(self):
        """Test must_contain_any_line():  find"""
        run_env = self.run_env

        script = lstrip("""
        import re
        import TestCommon
        test = TestCommon.TestCommon(workdir='')

        lines = [
            'aaa',
            '.*y',
        ]

        output = '''\\
        www
        xxx
        yyy
        zzz
        '''

        def re_search(output, line):
            return re.compile(line, re.S).search(output)
        test.must_contain_any_line(output, lines, find=re_search)

        test.pass_test()
        """)

        run_env.run(program=sys.executable, stdin=script)
        stdout = run_env.stdout()
        assert stdout == "", stdout
        stderr = run_env.stderr()
        assert stderr == "PASSED\n", stderr

    def test_title(self):
        """Test must_contain_any_line():  title"""
        run_env = self.run_env

        script = lstrip("""
        import TestCommon
        test = TestCommon.TestCommon(workdir='')

        lines = [
            'xxx\\n',
            'yyy\\n',
        ]

        output = '''\\
        www
        zzz
        '''

        test.must_contain_any_line(output, lines, title='STDOUT')

        test.pass_test()
        """)

        expect = lstrip("""\
        Missing any expected line from STDOUT:
            'xxx%(expected_newline)s'
            'yyy%(expected_newline)s'
        STDOUT =========================================================================
        www
        zzz
        """ % globals())

        run_env.run(program=sys.executable, stdin=script)
        stdout = run_env.stdout()
        stderr = run_env.stderr()
        assert stdout == expect, assert_display(expect, stdout, stderr)
        assert stderr.find("FAILED") != -1, stderr



class must_contain_exactly_lines_TestCase(TestCommonTestCase):
    def test_success_list(self):
        """Test must_contain_exactly_lines():  success (input list)"""
        run_env = self.run_env

        script = lstrip("""
        import TestCommon
        test = TestCommon.TestCommon(workdir='')

        lines = [
            'yyy\\n',
            'xxx\\n',
            'zzz',
            'www\\n',
        ]

        output = '''\\
        www
        xxx
        yyy
        zzz
        '''

        test.must_contain_exactly_lines(output, lines)

        test.pass_test()
        """)

        run_env.run(program=sys.executable, stdin=script)
        stdout = run_env.stdout()
        assert stdout == "", stdout
        stderr = run_env.stderr()
        assert stderr == "PASSED\n", stderr

    def test_success_string(self):
        """Test must_contain_exactly_lines():  success (input string)"""
        run_env = self.run_env

        script = lstrip("""
        import TestCommon
        test = TestCommon.TestCommon(workdir='')

        lines = '''\\
        yyy
        xxx
        zzz
        www
        '''

        output = '''\\
        www
        xxx
        yyy
        zzz
        '''

        test.must_contain_exactly_lines(output, lines)

        test.pass_test()
        """)

        run_env.run(program=sys.executable, stdin=script)
        stdout = run_env.stdout()
        assert stdout == "", stdout
        stderr = run_env.stderr()
        assert stderr == "PASSED\n", stderr

    def test_failure(self):
        """Test must_contain_exactly_lines():  failure"""
        run_env = self.run_env

        script = lstrip("""
        import TestCommon
        test = TestCommon.TestCommon(workdir='')

        lines = [
            'xxx\\n',
            'yyy\\n',
        ]

        output = '''\\
        www
        zzz
        '''

        test.must_contain_exactly_lines(output, lines)

        test.pass_test()
        """)

        expect = lstrip("""\
        Missing expected lines from output:
            'xxx'
            'yyy'
        Missing output =================================================================
        Extra unexpected lines from output:
            'www'
            'zzz'
        Extra output ===================================================================
        """ % globals())

        run_env.run(program=sys.executable, stdin=script)
        stdout = run_env.stdout()
        stderr = run_env.stderr()
        assert stdout == expect, assert_display(expect, stdout, stderr)
        assert stderr.find("FAILED") != -1, stderr

    def test_find(self):
        """Test must_contain_exactly_lines():  find"""
        run_env = self.run_env

        script = lstrip("""
        import re
        import TestCommon
        test = TestCommon.TestCommon(workdir='')

        lines = [
            'zzz',
            '.*y',
            'xxx',
            'www',
        ]

        output = '''\\\
        www
        xxx
        yyy
        zzz
        '''

        def re_search(output, line):
            pattern = re.compile(line, re.S)
            index = 0
            for o in output:
                if pattern.search(o):
                    return index
                index +=1
            return None
        test.must_contain_exactly_lines(output, lines, find=re_search)

        test.pass_test()
        """)

        run_env.run(program=sys.executable, stdin=script)
        stdout = run_env.stdout()
        assert stdout == "", stdout
        stderr = run_env.stderr()
        assert stderr == "PASSED\n", stderr

    def test_title(self):
        """Test must_contain_exactly_lines():  title"""
        run_env = self.run_env

        script = lstrip("""
        import TestCommon
        test = TestCommon.TestCommon(workdir='')

        lines = [
            'xxx\\n',
            'yyy\\n',
        ]

        output = '''\\
        www
        zzz
        '''

        test.must_contain_exactly_lines(output, lines, title='STDOUT')

        test.pass_test()
        """)

        expect = lstrip("""\
        Missing expected lines from STDOUT:
            'xxx'
            'yyy'
        Missing STDOUT =================================================================
        Extra unexpected lines from STDOUT:
            'www'
            'zzz'
        Extra STDOUT ===================================================================
        """ % globals())

        run_env.run(program=sys.executable, stdin=script)
        stdout = run_env.stdout()
        stderr = run_env.stderr()
        assert stdout == expect, assert_display(expect, stdout, stderr)
        assert stderr.find("FAILED") != -1, stderr



class must_contain_lines_TestCase(TestCommonTestCase):
    def test_success(self):
        """Test must_contain_lines():  success"""
        run_env = self.run_env

        script = lstrip("""
        import TestCommon
        test = TestCommon.TestCommon(workdir='')

        lines = [
            'xxx\\n',
            'yyy\\n',
        ]

        output = '''\\
        www
        xxx
        yyy
        zzz
        '''

        test.must_contain_lines(lines, output)

        test.pass_test()
        """)

        run_env.run(program=sys.executable, stdin=script)
        stdout = run_env.stdout()
        assert stdout == "", stdout
        stderr = run_env.stderr()
        assert stderr == "PASSED\n", stderr

    def test_failure(self):
        """Test must_contain_lines():  failure"""
        run_env = self.run_env

        script = lstrip("""
        import TestCommon
        test = TestCommon.TestCommon(workdir='')

        lines = [
            'xxx\\n',
            'yyy\\n',
        ]

        output = '''\\
        www
        zzz
        '''

        test.must_contain_lines(lines, output)

        test.pass_test()
        """)

        expect = lstrip("""\
        Missing expected lines from output:
            'xxx%(expected_newline)s'
            'yyy%(expected_newline)s'
        output =========================================================================
        www
        zzz
        """ % globals())

        run_env.run(program=sys.executable, stdin=script)
        stdout = run_env.stdout()
        stderr = run_env.stderr()
        assert stdout == expect, assert_display(expect, stdout, stderr)
        assert stderr.find("FAILED") != -1, stderr



class must_exist_TestCase(TestCommonTestCase):
    def test_success(self):
        """Test must_exist():  success"""
        run_env = self.run_env

        script = lstrip("""\
        from TestCommon import TestCommon
        tc = TestCommon(workdir='')
        tc.write('file1', "file1\\n")
        tc.must_exist('file1')
        tc.pass_test()
        """)
        run_env.run(program=sys.executable, stdin=script)
        stdout = run_env.stdout()
        assert stdout == "", stdout
        stderr = run_env.stderr()
        assert stderr == "PASSED\n", stderr

    def test_failure(self):
        """Test must_exist():  failure"""
        run_env = self.run_env

        script = lstrip("""\
        from TestCommon import TestCommon
        tc = TestCommon(workdir='')
        tc.must_exist('file1')
        tc.pass_test()
        """)
        run_env.run(program=sys.executable, stdin=script)
        stdout = run_env.stdout()
        assert stdout == "Missing files: `file1'\n", stdout
        stderr = run_env.stderr()
        assert stderr.find("FAILED") != -1, stderr

    def test_file_specified_as_list(self):
        """Test must_exist():  file specified as list"""
        run_env = self.run_env

        script = lstrip("""\
        from TestCommon import TestCommon
        tc = TestCommon(workdir='')
        tc.subdir('sub')
        tc.write(['sub', 'file1'], "sub/file1\\n")
        tc.must_exist(['sub', 'file1'])
        tc.pass_test()
        """)
        run_env.run(program=sys.executable, stdin=script)
        stdout = run_env.stdout()
        assert stdout == "", stdout
        stderr = run_env.stderr()
        assert stderr == "PASSED\n", stderr

    def test_broken_link(self) :
        """Test must_exist():  exists but it is a broken link"""
        run_env = self.run_env

        script = lstrip("""\
        from TestCommon import TestCommon
        tc = TestCommon(workdir='')
        tc.symlink('badtarget', "brokenlink")
        tc.must_exist('brokenlink')
        tc.pass_test()
        """)
        run_env.run(program=sys.executable, stdin=script)
        stdout = run_env.stdout()
        assert stdout == "", stdout
        stderr = run_env.stderr()
        assert stderr == "PASSED\n", stderr

class must_exist_one_of_TestCase(TestCommonTestCase):
    def test_success(self):
        """Test must_exist_one_of():  success"""
        run_env = self.run_env

        script = lstrip("""\
        from TestCommon import TestCommon
        tc = TestCommon(workdir='')
        tc.write('file1', "file1\\n")
        tc.must_exist_one_of(['file1'])
        tc.pass_test()
        """)
        run_env.run(program=sys.executable, stdin=script)
        stdout = run_env.stdout()
        assert stdout == "", stdout
        stderr = run_env.stderr()
        assert stderr == "PASSED\n", stderr

    def test_failure(self):
        """Test must_exist_one_of():  failure"""
        run_env = self.run_env

        script = lstrip("""\
        from TestCommon import TestCommon
        tc = TestCommon(workdir='')
        tc.must_exist_one_of(['file1'])
        tc.pass_test()
        """)
        run_env.run(program=sys.executable, stdin=script)
        stdout = run_env.stdout()
        assert stdout == "Missing one of: `file1'\n", stdout
        stderr = run_env.stderr()
        assert stderr.find("FAILED") != -1, stderr

    def test_files_specified_as_list(self):
        """Test must_exist_one_of():  files specified as list"""
        run_env = self.run_env

        script = lstrip("""\
        from TestCommon import TestCommon
        tc = TestCommon(workdir='')
        tc.write('file1', "file1\\n")
        tc.must_exist_one_of(['file2', 'file1'])
        tc.pass_test()
        """)
        run_env.run(program=sys.executable, stdin=script)
        stdout = run_env.stdout()
        assert stdout == "", stdout
        stderr = run_env.stderr()
        assert stderr == "PASSED\n", stderr

    def test_files_specified_with_wildcards(self):
        """Test must_exist_one_of():  files specified with wildcards"""
        run_env = self.run_env

        script = lstrip("""\
        from TestCommon import TestCommon
        tc = TestCommon(workdir='')
        tc.write('file7', "file7\\n")
        tc.must_exist_one_of(['file?'])
        tc.pass_test()
        """)
        run_env.run(program=sys.executable, stdin=script)
        stdout = run_env.stdout()
        assert stdout == "", stdout
        stderr = run_env.stderr()
        assert stderr == "PASSED\n", stderr

    def test_file_given_as_list(self):
        """Test must_exist_one_of():  file given as list"""
        run_env = self.run_env

        script = lstrip("""\
        from TestCommon import TestCommon
        tc = TestCommon(workdir='')
        tc.subdir('sub')
        tc.write(['sub', 'file1'], "sub/file1\\n")
        tc.must_exist_one_of(['file2',
                              ['sub', 'file1']])
        tc.pass_test()
        """)
        run_env.run(program=sys.executable, stdin=script)
        stdout = run_env.stdout()
        assert stdout == "", stdout
        stderr = run_env.stderr()
        assert stderr == "PASSED\n", stderr

    def test_file_given_as_sequence(self):
        """Test must_exist_one_of():  file given as sequence"""
        run_env = self.run_env

        script = lstrip("""\
        from TestCommon import TestCommon
        tc = TestCommon(workdir='')
        tc.subdir('sub')
        tc.write(['sub', 'file1'], "sub/file1\\n")
        tc.must_exist_one_of(['file2',
                              ('sub', 'file1')])
        tc.pass_test()
        """)
        run_env.run(program=sys.executable, stdin=script)
        stdout = run_env.stdout()
        assert stdout == "", stdout
        stderr = run_env.stderr()
        assert stderr == "PASSED\n", stderr

class must_match_TestCase(TestCommonTestCase):
    def test_success(self):
        """Test must_match():  success"""
        run_env = self.run_env

        script = lstrip("""\
        from TestCommon import TestCommon
        tc = TestCommon(workdir='')
        tc.write('file1', "file1\\n")
        tc.must_match('file1', "file1\\n")
        tc.pass_test()
        """)
        run_env.run(program=sys.executable, stdin=script)
        stdout = run_env.stdout()
        assert stdout == "", stdout
        stderr = run_env.stderr()
        assert stderr == "PASSED\n", stderr

    def test_file_does_not_exists(self):
        """Test must_match():  file does not exist"""
        run_env = self.run_env

        script = lstrip("""\
        from TestCommon import TestCommon
        tc = TestCommon(workdir='')
        tc.must_match('file1', "file1\\n")
        tc.pass_test()
        """)
        run_env.run(program=sys.executable, stdin=script)
        stdout = run_env.stdout()
        assert stdout == "", stdout
        stderr = run_env.stderr()
        assert stderr.find("No such file or directory:") != -1, stderr

    def test_failure(self):
        """Test must_match():  failure"""
        run_env = self.run_env

        script = lstrip("""\
        from TestCommon import TestCommon
        tc = TestCommon(workdir='')
        tc.write('file1', "file1 does not match\\n")
        tc.must_match('file1', "file1\\n")
        tc.run()
        """)

        expect = lstrip("""\
        Unexpected contents of `file1'
        contents =======================================================================
        1c1
        < file1
        ---
        > file1 does not match
        """)
        run_env.run(program=sys.executable, stdin=script)
        stdout = run_env.stdout()
        assert stdout == expect, stdout
        stderr = run_env.stderr()
        assert stderr.find("FAILED") != -1, stderr

    def test_mode(self):
        """Test must_match():  mode"""
        run_env = self.run_env

        script = lstrip("""\
        from TestCommon import TestCommon
        tc = TestCommon(workdir='')
        tc.write('file1', "file1\\n", mode='w')
        tc.must_match('file1', "file1\\n", mode='r')
        tc.write('file2', "file2\\n", mode='wb')
        tc.must_match('file2', "file2\\n", mode='rb')
        tc.pass_test()
        """)
        run_env.run(program=sys.executable, stdin=script)
        stdout = run_env.stdout()
        assert stdout == "", stdout
        stderr = run_env.stderr()
        assert stderr == "PASSED\n", stderr



class must_not_be_writable_TestCase(TestCommonTestCase):
    def test_file_does_not_exists(self):
        """Test must_not_be_writable():  file does not exist"""
        run_env = self.run_env

        script = lstrip("""\
        from TestCommon import TestCommon
        tc = TestCommon(workdir='')
        tc.must_not_be_writable('file1')
        tc.pass_test()
        """)
        run_env.run(program=sys.executable, stdin=script)
        stdout = run_env.stdout()
        assert stdout == "Missing files: `file1'\n", stdout
        stderr = run_env.stderr()
        assert stderr.find("FAILED") != -1, stderr

    def test_writable_file_exists(self):
        """Test must_not_be_writable():  writable file exists"""
        run_env = self.run_env

        script = lstrip("""\
        import os
        import stat
        from TestCommon import TestCommon
        tc = TestCommon(workdir='')
        tc.write('file1', "file1\\n")
        f1 = tc.workpath('file1')
        mode = os.stat(f1)[stat.ST_MODE]
        os.chmod(f1, mode | stat.S_IWUSR)
        tc.must_not_be_writable('file1')
        tc.pass_test()
        """)
        run_env.run(program=sys.executable, stdin=script)
        stdout = run_env.stdout()
        assert stdout == "Writable files: `file1'\n", stdout
        stderr = run_env.stderr()
        assert stderr.find("FAILED") != -1, stderr

    def test_non_writable_file_exists(self):
        """Test must_not_be_writable():  non-writable file exists"""
        run_env = self.run_env

        script = lstrip("""\
        import os
        import stat
        from TestCommon import TestCommon
        tc = TestCommon(workdir='')
        tc.write('file1', "file1\\n")
        f1 = tc.workpath('file1')
        mode = os.stat(f1)[stat.ST_MODE]
        os.chmod(f1, mode & ~stat.S_IWUSR)
        tc.must_not_be_writable('file1')
        tc.pass_test()
        """)
        run_env.run(program=sys.executable, stdin=script)
        stdout = run_env.stdout()
        assert stdout == "", stdout
        stderr = run_env.stderr()
        assert stderr == "PASSED\n", stderr

    def test_file_specified_as_list(self):
        """Test must_not_be_writable():  file specified as list"""
        run_env = self.run_env

        script = lstrip("""\
        import os
        import stat
        from TestCommon import TestCommon
        tc = TestCommon(workdir='')
        tc.subdir('sub')
        tc.write(['sub', 'file1'], "sub/file1\\n")
        f1 = tc.workpath('sub', 'file1')
        mode = os.stat(f1)[stat.ST_MODE]
        os.chmod(f1, mode & ~stat.S_IWUSR)
        tc.must_not_be_writable(['sub', 'file1'])
        tc.pass_test()
        """)
        run_env.run(program=sys.executable, stdin=script)
        stdout = run_env.stdout()
        assert stdout == "", stdout
        stderr = run_env.stderr()
        assert stderr == "PASSED\n", stderr



class must_not_contain_TestCase(TestCommonTestCase):
    def test_success(self):
        """Test must_not_contain():  success"""
        run_env = self.run_env

        script = lstrip("""\
        from TestCommon import TestCommon
        tc = TestCommon(workdir='')
        tc.write('file1', "file1 contents\\n")
        tc.must_not_contain('file1', "1 does not contain c")
        tc.pass_test()
        """)
        run_env.run(program=sys.executable, stdin=script)
        stdout = run_env.stdout()
        assert stdout == "", stdout
        stderr = run_env.stderr()
        assert stderr == "PASSED\n", stderr

    def test_file_does_not_exist(self):
        """Test must_not_contain():  file does not exist"""
        run_env = self.run_env

        script = lstrip("""\
        from TestCommon import TestCommon
        tc = TestCommon(workdir='')
        tc.must_not_contain('file1', "1 c\\n")
        tc.pass_test()
        """)
        run_env.run(program=sys.executable, stdin=script)
        stdout = run_env.stdout()
        assert stdout == "", stdout
        stderr = run_env.stderr()
        assert stderr.find("No such file or directory:") != -1, stderr

    def test_failure(self):
        """Test must_not_contain():  failure"""
        run_env = self.run_env

        script = lstrip("""\
        from TestCommon import TestCommon
        tc = TestCommon(workdir='')
        tc.write('file1', "file1 does contain contents\\n")
        tc.must_not_contain('file1', "1 does contain c")
        tc.run()
        """)
        expect = lstrip("""\
        File `file1' contains banned string.
        Banned string ==================================================================
        1 does contain c
        file1 contents =================================================================
        file1 does contain contents

        """)
        run_env.run(program=sys.executable, stdin=script)
        stdout = run_env.stdout()
        assert stdout == expect, repr(stdout)
        stderr = run_env.stderr()
        assert stderr.find("FAILED") != -1, stderr

    def test_mode(self):
        """Test must_not_contain():  mode"""
        run_env = self.run_env

        script = lstrip("""\
        from TestCommon import TestCommon
        tc = TestCommon(workdir='')
        tc.write('file1', "file1 contents\\n", mode='w')
        tc.must_not_contain('file1', "1 does not contain c", mode='r')
        tc.write('file2', "file2 contents\\n", mode='wb')
        tc.must_not_contain('file2', "2 does not contain c", mode='rb')
        tc.pass_test()
        """)
        run_env.run(program=sys.executable, stdin=script)
        stdout = run_env.stdout()
        assert stdout == "", stdout
        stderr = run_env.stderr()
        assert stderr == "PASSED\n", stderr



class must_not_contain_any_line_TestCase(TestCommonTestCase):
    def test_failure(self):
        """Test must_not_contain_any_line():  failure"""
        run_env = self.run_env

        script = lstrip("""
        import TestCommon
        test = TestCommon.TestCommon(workdir='')

        lines = [
            'xxx\\n',
            'yyy\\n',
            'www\\n',
        ]

        output = '''\\
        www
        xxx
        yyy
        zzz
        '''

        test.must_not_contain_any_line(output, lines)

        test.pass_test()
        """)

        expect = lstrip("""\
        Unexpected lines in output:
            'xxx%(expected_newline)s'
            'yyy%(expected_newline)s'
            'www%(expected_newline)s'
        output =========================================================================
        www
        xxx
        yyy
        zzz
        """ % globals())

        run_env.run(program=sys.executable, stdin=script)
        stdout = run_env.stdout()
        stderr = run_env.stderr()
        assert stdout == expect, assert_display(expect, stdout, stderr)
        assert stderr.find("FAILED") != -1, stderr

    def test_find(self):
        """Test must_not_contain_any_line():  find"""
        run_env = self.run_env

        script = lstrip("""
        import re
        import TestCommon
        test = TestCommon.TestCommon(workdir='')

        lines = [
            'x.*'
            '.*y'
        ]

        output = '''\\
        www
        zzz
        '''

        def re_search(output, line):
            return re.compile(line, re.S).search(output)
        test.must_not_contain_any_line(output, lines, find=re_search)

        test.pass_test()
        """)

        run_env.run(program=sys.executable, stdin=script)
        stdout = run_env.stdout()
        assert stdout == "", stdout
        stderr = run_env.stderr()
        assert stderr == "PASSED\n", stderr

    def test_success(self):
        """Test must_not_contain_any_line():  success"""
        run_env = self.run_env

        script = lstrip("""
        import TestCommon
        test = TestCommon.TestCommon(workdir='')

        lines = [
            'xxx\\n'
            'yyy\\n'
        ]

        output = '''\\
        www
        zzz
        '''

        test.must_not_contain_any_line(output, lines)

        test.pass_test()
        """)

        run_env.run(program=sys.executable, stdin=script)
        stdout = run_env.stdout()
        assert stdout == "", stdout
        stderr = run_env.stderr()
        assert stderr == "PASSED\n", stderr

    def test_title(self):
        """Test must_not_contain_any_line():  title"""
        run_env = self.run_env

        script = lstrip("""
        import TestCommon
        test = TestCommon.TestCommon(workdir='')

        lines = [
            'xxx\\n',
            'yyy\\n',
        ]

        output = '''\\
        www
        xxx
        yyy
        zzz
        '''

        test.must_not_contain_any_line(output, lines, title='XYZZY')

        test.pass_test()
        """)

        expect = lstrip("""\
        Unexpected lines in XYZZY:
            'xxx%(expected_newline)s'
            'yyy%(expected_newline)s'
        XYZZY ==========================================================================
        www
        xxx
        yyy
        zzz
        """ % globals())

        run_env.run(program=sys.executable, stdin=script)
        stdout = run_env.stdout()
        stderr = run_env.stderr()
        assert stdout == expect, assert_display(expect, stdout, stderr)
        assert stderr.find("FAILED") != -1, stderr



class must_not_contain_lines_TestCase(TestCommonTestCase):
    def test_failure(self):
        """Test must_not_contain_lines():  failure"""
        run_env = self.run_env

        script = lstrip("""
        import TestCommon
        test = TestCommon.TestCommon(workdir='')

        lines = [
            'xxx\\n',
            'yyy\\n',
        ]

        output = '''\\
        www
        xxx
        yyy
        zzz
        '''

        test.must_not_contain_lines(lines, output)

        test.pass_test()
        """)

        expect = lstrip("""\
        Unexpected lines in output:
            'xxx%(expected_newline)s'
            'yyy%(expected_newline)s'
        output =========================================================================
        www
        xxx
        yyy
        zzz
        """ % globals())

        run_env.run(program=sys.executable, stdin=script)
        stdout = run_env.stdout()
        stderr = run_env.stderr()
        assert stdout == expect, assert_display(expect, stdout, stderr)
        assert stderr.find("FAILED") != -1, stderr

    def test_success(self):
        """Test must_not_contain_lines():  success"""
        run_env = self.run_env

        script = lstrip("""
        import TestCommon
        test = TestCommon.TestCommon(workdir='')

        lines = [
            'xxx\\n'
            'yyy\\n'
        ]

        output = '''\\
        www
        zzz
        '''

        test.must_not_contain_lines(lines, output)

        test.pass_test()
        """)

        run_env.run(program=sys.executable, stdin=script)
        stdout = run_env.stdout()
        assert stdout == "", stdout
        stderr = run_env.stderr()
        assert stderr == "PASSED\n", stderr



class must_not_exist_TestCase(TestCommonTestCase):
    def test_failure(self):
        """Test must_not_exist():  failure"""
        run_env = self.run_env

        script = lstrip("""\
        from TestCommon import TestCommon
        tc = TestCommon(workdir='')
        tc.write('file1', "file1\\n")
        tc.must_not_exist('file1')
        tc.pass_test()
        """)
        run_env.run(program=sys.executable, stdin=script)
        stdout = run_env.stdout()
        assert stdout == "Unexpected files exist: `file1'\n", stdout
        stderr = run_env.stderr()
        assert stderr.find("FAILED") != -1, stderr

    def test_success(self):
        """Test must_not_exist():  success"""
        run_env = self.run_env

        script = lstrip("""\
        from TestCommon import TestCommon
        tc = TestCommon(workdir='')
        tc.must_not_exist('file1')
        tc.pass_test()
        """)
        run_env.run(program=sys.executable, stdin=script)
        stdout = run_env.stdout()
        assert stdout == "", stdout
        stderr = run_env.stderr()
        assert stderr == "PASSED\n", stderr

    def test_file_specified_as_list(self):
        """Test must_not_exist():  file specified as list"""
        run_env = self.run_env

        script = lstrip("""\
        from TestCommon import TestCommon
        tc = TestCommon(workdir='')
        tc.subdir('sub')
        tc.must_not_exist(['sub', 'file1'])
        tc.pass_test()
        """)
        run_env.run(program=sys.executable, stdin=script)
        stdout = run_env.stdout()
        assert stdout == "", stdout
        stderr = run_env.stderr()
        assert stderr == "PASSED\n", stderr

    def test_existing_broken_link(self):
        """Test must_not_exist():  exists but it is a broken link"""
        run_env = self.run_env

        script = lstrip("""\
        from TestCommon import TestCommon
        tc = TestCommon(workdir='')
        tc.symlink('badtarget', 'brokenlink')
        tc.must_not_exist('brokenlink')
        tc.pass_test()
        """)
        run_env.run(program=sys.executable, stdin=script)
        stdout = run_env.stdout()
        assert stdout == "Unexpected files exist: `brokenlink'\n", stdout
        stderr = run_env.stderr()
        assert stderr.find("FAILED") != -1, stderr

class must_not_exist_any_of_TestCase(TestCommonTestCase):
    def test_success(self):
        """Test must_not_exist_any_of():  success"""
        run_env = self.run_env

        script = lstrip("""\
        from TestCommon import TestCommon
        tc = TestCommon(workdir='')
        tc.must_not_exist_any_of(['file1'])
        tc.pass_test()
        """)
        run_env.run(program=sys.executable, stdin=script)
        stdout = run_env.stdout()
        assert stdout == "", stdout
        stderr = run_env.stderr()
        assert stderr == "PASSED\n", stderr

    def test_failure(self):
        """Test must_not_exist_any_of():  failure"""
        run_env = self.run_env

        script = lstrip("""\
        from TestCommon import TestCommon
        tc = TestCommon(workdir='')
        tc.write('file1', "file1\\n")
        tc.must_not_exist_any_of(['file1'])
        tc.pass_test()
        """)
        run_env.run(program=sys.executable, stdin=script)
        stdout = run_env.stdout()
        assert stdout == "Unexpected files exist: `file1'\n", stdout
        stderr = run_env.stderr()
        assert stderr.find("FAILED") != -1, stderr

    def test_files_specified_as_list(self):
        """Test must_not_exist_any_of():  files specified as list"""
        run_env = self.run_env

        script = lstrip("""\
        from TestCommon import TestCommon
        tc = TestCommon(workdir='')
        tc.must_not_exist_any_of(['file2', 'file1'])
        tc.pass_test()
        """)
        run_env.run(program=sys.executable, stdin=script)
        stdout = run_env.stdout()
        assert stdout == "", stdout
        stderr = run_env.stderr()
        assert stderr == "PASSED\n", stderr

    def test_files_specified_with_wildcards(self):
        """Test must_not_exist_any_of():  files specified with wildcards"""
        run_env = self.run_env

        script = lstrip("""\
        from TestCommon import TestCommon
        tc = TestCommon(workdir='')
        tc.write('file7', "file7\\n")
        tc.must_not_exist_any_of(['files?'])
        tc.pass_test()
        """)
        run_env.run(program=sys.executable, stdin=script)
        stdout = run_env.stdout()
        assert stdout == "", stdout
        stderr = run_env.stderr()
        assert stderr == "PASSED\n", stderr

    def test_file_given_as_list(self):
        """Test must_not_exist_any_of():  file given as list"""
        run_env = self.run_env

        script = lstrip("""\
        from TestCommon import TestCommon
        tc = TestCommon(workdir='')
        tc.subdir('sub')
        tc.write(['sub', 'file1'], "sub/file1\\n")
        tc.must_not_exist_any_of(['file2',
                              ['sub', 'files*']])
        tc.pass_test()
        """)
        run_env.run(program=sys.executable, stdin=script)
        stdout = run_env.stdout()
        assert stdout == "", stdout
        stderr = run_env.stderr()
        assert stderr == "PASSED\n", stderr

    def test_file_given_as_sequence(self):
        """Test must_not_exist_any_of():  file given as sequence"""
        run_env = self.run_env

        script = lstrip("""\
        from TestCommon import TestCommon
        tc = TestCommon(workdir='')
        tc.subdir('sub')
        tc.write(['sub', 'file1'], "sub/file1\\n")
        tc.must_not_exist_any_of(['file2',
                              ('sub', 'files?')])
        tc.pass_test()
        """)
        run_env.run(program=sys.executable, stdin=script)
        stdout = run_env.stdout()
        assert stdout == "", stdout
        stderr = run_env.stderr()
        assert stderr == "PASSED\n", stderr

class run_TestCase(TestCommonTestCase):
    def test_argument_handling(self):
        """Test run():  argument handling"""

        script = lstrip("""\
        from TestCommon import TestCommon, match_exact
        tc = TestCommon(program=r'%(pass_script)s',
                        interpreter='%(python)s',
                        workdir="",
                        match=match_exact)
        tc.run(arguments = "arg1 arg2 arg3",
               stdout = r"%(pass_script)s:  STDOUT:  ['arg1', 'arg2', 'arg3']" + "\\n")
        """)

        self.run_execution_test(script, "", "")

    def test_default_pass(self):
        """Test run():  default arguments, script passes"""

        script = lstrip("""\
        from TestCommon import TestCommon
        tc = TestCommon(program=r'%(pass_script)s',
                        interpreter=r'%(python)s',
                        workdir='')
        tc.run()
        """)

        self.run_execution_test(script, "", "")

    def test_default_fail(self):
        """Test run():  default arguments, script fails"""

        script = lstrip("""\
        from TestCommon import TestCommon
        tc = TestCommon(program=r'%(fail_script)s',
                        interpreter='%(python)s',
                        workdir='')
        tc.run()
        """)

        expect_stdout = lstrip("""\
        %(fail_script)s returned 1
        STDOUT =========================================================================
        %(fail_script)s:  STDOUT:  []

        STDERR =========================================================================

        """)

        expect_stderr = lstrip("""\
        FAILED test of .*fail
        \\tat line \\d+ of .*TestCommon\\.py \\(_complete\\)
        \\tfrom line \\d+ of .*TestCommon\\.py \\(run\\)
        \\tfrom line \\d+ of <stdin>( \(<module>\))?
        """)
        expect_stderr = re.compile(expect_stderr, re.M)

        self.run_execution_test(script, expect_stdout, expect_stderr)

    def test_default_stderr(self):
        """Test run():  default arguments, error output"""
        script = lstrip("""\
        from TestCommon import TestCommon
        tc = TestCommon(program=r'%(stderr_script)s',
                        interpreter='%(python)s',
                        workdir='')
        tc.run()
        """)

        expect_stdout = lstrip("""\
        STDOUT =========================================================================

        STDERR =========================================================================
        0a1
        > %(stderr_script)s:  STDERR:  []
        """)

        expect_stderr = lstrip("""\
        FAILED test of .*stderr
        \\tat line \\d+ of .*TestCommon\\.py \\(_complete\\)
        \\tfrom line \\d+ of .*TestCommon\\.py \\(run\\)
        \\tfrom line \\d+ of <stdin>
        """)
        expect_stderr = re.compile(expect_stderr, re.M)

        self.run_execution_test(script, expect_stdout, expect_stderr)

    def test_exception_handling(self):
        """Test run():  exception handling"""
        script = lstrip("""\
        import TestCmd
        from TestCommon import TestCommon
        def raise_exception(*args, **kw):
            raise TypeError("forced TypeError")
        TestCmd.TestCmd.start = raise_exception
        tc = TestCommon(program='%(pass_script)s',
                        interpreter='%(python)s',
                        workdir='')
        tc.run()
        """)

        expect_stdout = lstrip("""\
        STDOUT =========================================================================
        STDERR =========================================================================
        """)

        expect_stderr = lstrip("""\
        Exception trying to execute: \\[%s, '[^']*pass'\\]
        Traceback \\((innermost|most recent call) last\\):
          File "<stdin>", line \\d+, in (\\?|<module>)
          File "[^"]+TestCommon.py", line \\d+, in run
            TestCmd.run\\(self, \\*\\*kw\\)
          File "[^"]+TestCmd.py", line \\d+, in run
            .*
          File "[^"]+TestCommon.py", line \\d+, in start
            raise e
        TypeError: forced TypeError
        """ % re.escape(repr(sys.executable)))
        expect_stderr = re.compile(expect_stderr, re.M)

        self.run_execution_test(script, expect_stdout, expect_stderr)

    def test_ignore_stderr(self):
        """Test run():  ignore stderr"""

        script = lstrip("""\
        from TestCommon import TestCommon
        tc = TestCommon(program=r'%(stderr_script)s',
                        interpreter='%(python)s',
                        workdir='')
        tc.run(stderr = None)
        """)

        self.run_execution_test(script, "", "")

    def test_match_function_stdout(self):
        """Test run():  explicit match function, stdout"""

        script = lstrip("""\
        def my_match_exact(actual, expect): return actual == expect
        from TestCommon import TestCommon, match_re_dotall
        tc = TestCommon(program=r'%(pass_script)s',
                        interpreter='%(python)s',
                        workdir="",
                        match=match_re_dotall)
        tc.run(arguments = "arg1 arg2 arg3",
               stdout = r"%(pass_script)s:  STDOUT:  ['arg1', 'arg2', 'arg3']" + "\\n",
               match = my_match_exact)
        """)

        self.run_execution_test(script, "", "")

    def test_match_function_stderr(self):
        """Test run():  explicit match function, stderr"""

        script = lstrip("""\
        def my_match_exact(actual, expect): return actual == expect
        from TestCommon import TestCommon, match_re_dotall
        tc = TestCommon(program=r'%(stderr_script)s',
                        interpreter='%(python)s',
                        workdir="",
                        match=match_re_dotall)
        tc.run(arguments = "arg1 arg2 arg3",
               stderr = r"%(stderr_script)s:  STDERR:  ['arg1', 'arg2', 'arg3']" + "\\n",
               match = my_match_exact)
        """)

        self.run_execution_test(script, "", "")

    def test_matched_status_fails(self):
        """Test run():  matched status, script fails"""

        script = lstrip("""\
        from TestCommon import TestCommon
        tc = TestCommon(program=r'%(fail_script)s',
                        interpreter='%(python)s',
                        workdir='')
        tc.run(status = 1)
        """)

        self.run_execution_test(script, "", "")

    def test_matched_stdout(self):
        """Test run():  matched stdout"""

        script = lstrip("""\
        from TestCommon import TestCommon, match_exact
        tc = TestCommon(program=r'%(pass_script)s',
                        interpreter='%(python)s',
                        workdir="",
                        match=match_exact)
        tc.run(stdout = r"%(pass_script)s:  STDOUT:  []" + "\\n")
        """)

        self.run_execution_test(script, "", "")

    def test_matched_stderr(self):
        """Test run():  matched stderr"""

        script = lstrip("""\
        from TestCommon import TestCommon, match_exact
        tc = TestCommon(program=r'%(stderr_script)s',
                        interpreter='%(python)s',
                        workdir="",
                        match=match_exact)
        tc.run(stderr = r"%(stderr_script)s:  STDERR:  []" + "\\n")
        """)

        self.run_execution_test(script, "", "")

    def test_mismatched_status_pass(self):
        """Test run():  mismatched status, script passes"""

        script = lstrip("""\
        from TestCommon import TestCommon
        tc = TestCommon(program=r'%(pass_script)s',
                        interpreter='%(python)s',
                        workdir='')
        tc.run(status = 1)
        """)

        expect_stdout = lstrip("""\
        %(pass_script)s returned 0 (expected 1)
        STDOUT =========================================================================
        %(pass_script)s:  STDOUT:  []

        STDERR =========================================================================

        """)

        expect_stderr = lstrip("""\
        FAILED test of .*pass
        \\tat line \\d+ of .*TestCommon\\.py \\(_complete\\)
        \\tfrom line \\d+ of .*TestCommon\\.py \\(run\\)
        \\tfrom line \\d+ of <stdin>( \(<module>\))?
        """)
        expect_stderr = re.compile(expect_stderr, re.M)

        self.run_execution_test(script, expect_stdout, expect_stderr)

    def test_mismatched_status_fail(self):
        """Test run():  mismatched status, script fails"""

        script = lstrip("""\
        from TestCommon import TestCommon
        tc = TestCommon(program=r'%(fail_script)s',
                        interpreter='%(python)s',
                        workdir='')
        tc.run(status = 2)
        """)

        expect_stdout = lstrip("""\
        %(fail_script)s returned 1 (expected 2)
        STDOUT =========================================================================
        %(fail_script)s:  STDOUT:  []

        STDERR =========================================================================

        """)

        expect_stderr = lstrip("""\
        FAILED test of .*fail
        \\tat line \\d+ of .*TestCommon\\.py \\(_complete\\)
        \\tfrom line \\d+ of .*TestCommon\\.py \\(run\\)
        \\tfrom line \\d+ of <stdin>( \(<module>\))?
        """)
        expect_stderr = re.compile(expect_stderr, re.M)

        self.run_execution_test(script, expect_stdout, expect_stderr)

    def test_mismatched_stdout(self):
        """Test run():  mismatched stdout"""

        script = lstrip("""\
        from TestCommon import TestCommon
        tc = TestCommon(program=r'%(pass_script)s',
                        interpreter='%(python)s',
                        workdir='')
        tc.run(stdout = "Not found\\n")
        """)

        expect_stdout = lstrip("""\
        STDOUT =========================================================================
        1c1
        < Not found
        ---
        > %(pass_script)s:  STDOUT:  []
        """)

        expect_stderr = lstrip("""\
        FAILED test of .*pass
        \\tat line \\d+ of .*TestCommon\\.py \\(_complete\\)
        \\tfrom line \\d+ of .*TestCommon\\.py \\(run\\)
        \\tfrom line \\d+ of <stdin>( \(<module>\))?
        """)
        expect_stderr = re.compile(expect_stderr, re.M)

        self.run_execution_test(script, expect_stdout, expect_stderr)

    def test_mismatched_stderr(self):
        """Test run():  mismatched stderr"""

        script = lstrip("""\
        from TestCommon import TestCommon
        tc = TestCommon(program=r'%(stderr_script)s',
                        interpreter='%(python)s',
                        workdir='')
        tc.run(stderr = "Not found\\n")
        """)

        expect_stdout = lstrip("""\
        STDOUT =========================================================================

        STDERR =========================================================================
        1c1
        < Not found
        ---
        > %(stderr_script)s:  STDERR:  []
        """)

        expect_stderr = lstrip("""\
        FAILED test of .*stderr
        \\tat line \\d+ of .*TestCommon\\.py \\(_complete\\)
        \\tfrom line \\d+ of .*TestCommon\\.py \\(run\\)
        \\tfrom line \\d+ of <stdin>( \(<module>\))?
        """)
        expect_stderr = re.compile(expect_stderr, re.M)

        self.run_execution_test(script, expect_stdout, expect_stderr)

    def test_option_handling(self):
        """Test run():  option handling"""

        script = lstrip("""\
        from TestCommon import TestCommon, match_exact
        tc = TestCommon(program=r'%(pass_script)s',
                        interpreter='%(python)s',
                        workdir="",
                        match=match_exact)
        tc.run(options = "opt1 opt2 opt3",
               stdout = r"%(pass_script)s:  STDOUT:  ['opt1', 'opt2', 'opt3']" + "\\n")
        """)

        self.run_execution_test(script, "", "")

    def test_options_plus_arguments(self):
        """Test run():  option handling with arguments"""

        script = lstrip("""\
        from TestCommon import TestCommon, match_exact
        tc = TestCommon(program=r'%(pass_script)s',
                        interpreter='%(python)s',
                        workdir="",
                        match=match_exact)
        tc.run(options = "opt1 opt2 opt3",
               arguments = "arg1 arg2 arg3",
               stdout = r"%(pass_script)s:  STDOUT:  ['opt1', 'opt2', 'opt3', 'arg1', 'arg2', 'arg3']" + "\\n")
        """)

        self.run_execution_test(script, "", "")

    def test_signal_handling(self):
        """Test run():  signal handling"""

        try:
            os.kill
        except AttributeError:
            sys.stderr.write('can not test, no os.kill ... ')
            return

        script = lstrip("""\
        from TestCommon import TestCommon
        tc = TestCommon(program=r'%(signal_script)s',
                        interpreter='%(python)s',
                        workdir='')
        tc.run()
        """)

        self.SIGTERM = signal.SIGTERM

        # Script returns the signal value as a negative number.
        expect_stdout = lstrip("""\
        %(signal_script)s returned -%(SIGTERM)s
        STDOUT =========================================================================

        STDERR =========================================================================

        """)

        expect_stderr = lstrip("""\
        FAILED test of .*signal
        \\tat line \\d+ of .*TestCommon\\.py \\(_complete\\)
        \\tfrom line \\d+ of .*TestCommon\\.py \\(run\\)
        \\tfrom line \\d+ of <stdin>
        """)
        expect_stderr = re.compile(expect_stderr, re.M)

        self.run_execution_test(script, expect_stdout, expect_stderr)

    def test_stdin(self):
        """Test run():  stdin handling"""

        script = lstrip("""\
        from TestCommon import TestCommon, match_exact
        tc = TestCommon(program=r'%(stdin_script)s',
                        interpreter='%(python)s',
                        workdir='',
                        match=match_exact)
        expect_stdout = r"%(stdin_script)s:  STDOUT:  'input'" + "\\n"
        expect_stderr = r"%(stdin_script)s:  STDERR:  'input'" + "\\n"
        tc.run(stdin="input\\n", stdout = expect_stdout, stderr = expect_stderr)
        """)

        expect_stdout = lstrip("""\
        %(pass_script)s returned 0 (expected 1)
        STDOUT =========================================================================
        %(pass_script)s:  STDOUT:  []

        STDERR =========================================================================

        """)

        self.run_execution_test(script, "", "")



class start_TestCase(TestCommonTestCase):
    def test_option_handling(self):
        """Test start():  option handling"""

        script = lstrip("""\
        from TestCommon import TestCommon, match_exact
        tc = TestCommon(program=r'%(pass_script)s',
                        interpreter='%(python)s',
                        workdir="",
                        match=match_exact)
        p = tc.start(options = "opt1 opt2 opt3")
        expect = r"%(pass_script)s:  STDOUT:  ['opt1', 'opt2', 'opt3']" + "\\n"
        tc.finish(p, stdout = expect)
        """)

        self.run_execution_test(script, "", "")

    def test_options_plus_arguments(self):
        """Test start():  option handling with arguments"""

        script = lstrip("""\
        from TestCommon import TestCommon, match_exact
        tc = TestCommon(program=r'%(pass_script)s',
                        interpreter='%(python)s',
                        workdir="",
                        match=match_exact)
        p = tc.start(options = "opt1 opt2 opt3",
                     arguments = "arg1 arg2 arg3")
        expect = r"%(pass_script)s:  STDOUT:  ['opt1', 'opt2', 'opt3', 'arg1', 'arg2', 'arg3']" + "\\n"
        tc.finish(p, stdout = expect)
        """)

        self.run_execution_test(script, "", "")



class skip_test_TestCase(TestCommonTestCase):
    def test_skip_test(self):
        """Test skip_test()"""
        run_env = self.run_env

        script = lstrip("""\
        import TestCommon
        test = TestCommon.TestCommon(workdir='')
        test.skip_test()
        """)
        run_env.run(program=sys.executable, stdin=script)
        stdout = run_env.stdout()
        assert stdout == "Skipping test.\n", stdout
        stderr = run_env.stderr()
        expect = [
            "NO RESULT for test at line 3 of <stdin>\n",
            "NO RESULT for test at line 3 of <stdin> (<module>)\n",
        ]
        assert stderr in expect, repr(stderr)

        script = lstrip("""\
        import TestCommon
        test = TestCommon.TestCommon(workdir='')
        test.skip_test("skipping test because I said so\\n")
        """)
        run_env.run(program=sys.executable, stdin=script)
        stdout = run_env.stdout()
        assert stdout == "skipping test because I said so\n", stdout
        stderr = run_env.stderr()
        expect = [
            "NO RESULT for test at line 3 of <stdin>\n",
            "NO RESULT for test at line 3 of <stdin> (<module>)\n",
        ]
        assert stderr in expect, repr(stderr)

        import os
        os.environ['TESTCOMMON_PASS_SKIPS'] = '1'

        try:
            script = lstrip("""\
            import TestCommon
            test = TestCommon.TestCommon(workdir='')
            test.skip_test()
            """)
            run_env.run(program=sys.executable, stdin=script)
            stdout = run_env.stdout()
            assert stdout == "Skipping test.\n", stdout
            stderr = run_env.stderr()
            assert stderr == "PASSED\n", stderr

        finally:
            del os.environ['TESTCOMMON_PASS_SKIPS']



class variables_TestCase(TestCommonTestCase):
    def test_variables(self):
        """Test global variables"""
        run_env = self.run_env

        variables = [
            'fail_test',
            'no_result',
            'pass_test',
            'match_exact',
            'match_re',
            'match_re_dotall',
            'python',
            '_python_',
            'TestCmd',

            'TestCommon',
            'exe_suffix',
            'obj_suffix',
            'shobj_prefix',
            'shobj_suffix',
            'lib_prefix',
            'lib_suffix',
            'dll_prefix',
            'dll_suffix',
        ]

        script = "import TestCommon\n" + \
                 '\n'.join([ "print TestCommon.%s\n" % v for v in variables ])
        run_env.run(program=sys.executable, stdin=script)
        stderr = run_env.stderr()
        assert stderr == "", stderr

        script = "from TestCommon import *\n" + \
                 '\n'.join([ "print %s" % v for v in variables ])
        run_env.run(program=sys.executable, stdin=script)
        stderr = run_env.stderr()
        assert stderr == "", stderr



if __name__ == "__main__":
    tclasses = [
        __init__TestCase,
        banner_TestCase,
        must_be_writable_TestCase,
        must_contain_TestCase,
        must_contain_all_lines_TestCase,
        must_contain_any_line_TestCase,
        must_contain_exactly_lines_TestCase,
        must_contain_lines_TestCase,
        must_exist_TestCase,
        must_exist_one_of_TestCase,
        must_match_TestCase,
        must_not_be_writable_TestCase,
        must_not_contain_TestCase,
        must_not_contain_any_line_TestCase,
        must_not_contain_lines_TestCase,
        must_not_exist_TestCase,
        must_not_exist_any_of_TestCase,
        run_TestCase,
        start_TestCase,
        skip_test_TestCase,
        variables_TestCase,
    ]
    suite = unittest.TestSuite()
    for tclass in tclasses:
        names = unittest.getTestCaseNames(tclass, 'test_')
        suite.addTests([ tclass(n) for n in names ])
    if not unittest.TextTestRunner().run(suite).wasSuccessful():
        sys.exit(1)

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