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"""Test "main" functionality for junitxml.
:Author: Duncan Findlay <duncan@duncf.ca>
"""
import os
import shutil
import sys
import tempfile
import xml.dom.minidom
try:
from cStringIO import StringIO
except ImportError:
from io import StringIO
try:
import unittest2 as unittest
except ImportError:
import unittest
import junitxml.main
def _skip_if(condition):
"""Decorator for skipping tests no matter what version of unittest."""
if condition:
def decorator(func):
if hasattr(unittest, 'skip'):
# If we don't have discovery, we probably don't skip, but we'll
# try anyways...
return unittest.skip('Discovery not supported.')(func)
else:
return None
return decorator
else:
# Condition is false, return the do-nothing decorator.
def decorator(func):
return func
return decorator
class FakeLoader(object):
"""Fake TestLoader to stub out test loading."""
def discover(self, start_dir, pattern=None, top_level_dir=None):
self._did_discovery = (start_dir, pattern, top_level_dir)
return unittest.TestSuite()
def loadTestsFromNames(self, names, module=None):
self._loaded_tests = (names, module)
return unittest.TestSuite()
class RedirectedTestCase(unittest.TestCase):
"""Redirects test output away from stdout/stderr."""
def setUp(self):
self._stderr = StringIO()
self._stdout = StringIO()
self._old_stderr = sys.stderr
self._old_stdout = sys.stdout
sys.stderr = self._stderr
sys.stdout = self._stdout
def tearDown(self):
sys.stderr = self._old_stderr
sys.stdout = self._old_stdout
class TestArgs(RedirectedTestCase):
def _test_bad_args(self, args, can_discover=None):
# XmlTestPrograrm uses some magic to figure out whether it can do test
# discovery. We want to manually control that, sometimes.
try:
if can_discover is not None:
prog = junitxml.main.XmlTestProgram(can_discover=can_discover)
junitxml.main.main(args, prog=prog)
else:
junitxml.main.main(args)
self.fail('No exception thrown')
except SystemExit:
e = sys.exc_info()[1]
self.assertEqual(e.code, 2, self._stderr.getvalue())
except:
self.fail('No SystemExit exception thrown')
def test_bad_opts(self):
"""Bad option combinations are rejected."""
# Mix of tests and discovery opts.
self._test_bad_args(['-s', '..', 'my_test'])
self._test_bad_args(['-p', 'foo*.py', 'my_test'])
self._test_bad_args(['-t', '..', 'my_test'])
self._test_bad_args(['--top', '..', 'my_test'])
# Incomplete options.
self._test_bad_args(['-o'])
self._test_bad_args(['-p'])
self._test_bad_args(['-s'])
self._test_bad_args(['-t'])
def test_help(self):
"""Help is displayed with --help."""
try:
junitxml.main.main(['--help'])
except SystemExit:
e = sys.exc_info()[1]
self.assertEqual(e.code, 1)
except:
self.fail('No SystemExit exception thrown.')
self.assertTrue('Example ' in self._stdout.getvalue())
def test_no_discovery(self):
"""Discovery options are rejected if discovery is not available."""
self._test_bad_args([], can_discover=False)
self._test_bad_args(['-s', '..'], can_discover=False)
self._test_bad_args(['-t', '..'], can_discover=False)
self._test_bad_args(['-p', '*.*'], can_discover=False)
class TestLoad(RedirectedTestCase):
def setUp(self):
super(TestLoad, self).setUp()
self._tmpdir = tempfile.mkdtemp(prefix='unittest_junitxml_')
self._output_file = os.path.join(self._tmpdir, 'junit.xml')
def tearDown(self):
super(TestLoad, self).tearDown()
shutil.rmtree(self._tmpdir)
def test_loaded_tests(self):
"""Verify named tests are properly loaded."""
prog = junitxml.main.XmlTestProgram()
prog.loader = FakeLoader()
prog.parse_args(['-o', self._output_file, 'my_test1', 'my_test2'])
result = prog.run()
document = xml.dom.minidom.parse(self._output_file)
self.assertEqual(document.documentElement.tagName, 'testsuite')
self.assertEqual(document.documentElement.getAttribute('tests'), '0')
self.assertEqual(result.wasSuccessful(), True)
self.assertTrue(hasattr(prog.loader, '_loaded_tests'))
self.assertEqual(prog.loader._loaded_tests,
(['my_test1', 'my_test2'], None))
def test_discovery_all_args(self):
"""Verify cmdline opts are used for discovery."""
prog = junitxml.main.XmlTestProgram(can_discover=True)
prog.loader = FakeLoader()
prog.parse_args(['-o', self._output_file, '-s', self._tmpdir,
'--pattern', '*.py', '-t', '.'])
result = prog.run()
document = xml.dom.minidom.parse(self._output_file)
self.assertEqual(document.documentElement.tagName, 'testsuite')
self.assertEqual(document.documentElement.getAttribute('tests'), '0')
self.assertEqual(result.wasSuccessful(), True)
self.assertTrue(hasattr(prog.loader, '_did_discovery'))
self.assertEqual(prog.loader._did_discovery,
(self._tmpdir, '*.py', '.'))
def test_discovery_top_dir(self):
"""Verify top-level dir properly defaults to start directory."""
prog = junitxml.main.XmlTestProgram(can_discover=True)
prog.loader = FakeLoader()
prog.parse_args(['-o', self._output_file, '--start-dir', self._tmpdir])
result = prog.run()
document = xml.dom.minidom.parse(self._output_file)
self.assertEqual(document.documentElement.tagName, 'testsuite')
self.assertEqual(document.documentElement.getAttribute('tests'), '0')
self.assertEqual(result.wasSuccessful(), True)
self.assertTrue(hasattr(prog.loader, '_did_discovery'))
self.assertEqual(prog.loader._did_discovery,
(self._tmpdir, 'test*.py', self._tmpdir))
def test_discovery_no_args(self):
"""Verify good defaults are used for discovery when not specified."""
prog = junitxml.main.XmlTestProgram(can_discover=True)
prog.loader = FakeLoader()
prog.parse_args(['-o', self._output_file])
result = prog.run()
document = xml.dom.minidom.parse(self._output_file)
self.assertEqual(document.documentElement.tagName, 'testsuite')
self.assertEqual(document.documentElement.getAttribute('tests'), '0')
self.assertEqual(result.wasSuccessful(), True)
self.assertTrue(hasattr(prog.loader, '_did_discovery'))
self.assertEqual(prog.loader._did_discovery,
('.', 'test*.py', '.'))
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