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# Copyright 2013, Red Hat, Inc.
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License along
# with this program; if not, write to the Free Software Foundation, Inc.,
# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
#
# Author: Josef Skladanka <jskladan@redhat.com>
import re
try:
from CStringIO import StringIO
except ImportError:
from StringIO import StringIO
import yaml
RE_VERSION = re.compile(r"^\s*TAP version 13\s*$")
RE_PLAN = re.compile(
r"^\s*(?P<start>\d+)\.\.(?P<end>\d+)\s*(#\s*(?P<explanation>.*))?\s*$")
RE_TEST_LINE = re.compile(
r"^\s*(?P<result>(not\s+)?ok)\s*(?P<id>\d+)?\s*(?P<description>[^#]+)?" +
r"\s*(#\s*(?P<directive>TODO|SKIP)?\s*(?P<comment>.+)?)?\s*$",
re.IGNORECASE)
RE_DIAGNOSTIC = re.compile(r"^\s*#\s*(?P<diagnostic>.+)?\s*$")
RE_YAMLISH_START = re.compile(r"^\s*---.*$")
RE_YAMLISH_END = re.compile(r"^\s*\.\.\.\s*$")
class Test(object):
def __init__(self, result, id, description=None, directive=None,
comment=None):
self.result = result
self.id = id
self.description = description
try:
self.directive = directive.upper()
except AttributeError:
self.directive = directive
self.comment = comment
self.yaml = None
self._yaml_buffer = StringIO()
self.diagnostics = []
class TAP13(object):
def __init__(self, strict=False):
self.tests = []
self.__tests_counter = 0
self.tests_planned = None
self.strict = strict
def _parse(self, source):
seek_version = True
seek_plan = False
seek_test = False
in_test = False
in_yaml = False
for line in source:
if not seek_version and RE_VERSION.match(line):
raise ValueError("Bad TAP format, multiple TAP headers")
if in_yaml:
if RE_YAMLISH_END.match(line):
test = self.tests[-1]
try:
test.yaml = yaml.safe_load(
test._yaml_buffer.getvalue())
except Exception as e:
if not self.strict:
continue
test_num = len(self.tests) + 1
comment = 'DIAG: Test %s has wrong YAML: %s' % (
test_num, str(e))
self.tests.append(Test('not ok', test_num,
comment=comment))
in_yaml = False
else:
self.tests[-1]._yaml_buffer.write(line)
continue
if in_test:
if RE_DIAGNOSTIC.match(line):
self.tests[-1].diagnostics.append(line.strip())
continue
if RE_YAMLISH_START.match(line):
in_yaml = True
continue
on_top_level = not line.startswith(' ')
raw_line = line.rstrip('\n')
line = line.strip()
if RE_DIAGNOSTIC.match(line):
continue
# this is "beginning" of the parsing, skip all lines until
# version is found (in non-strict mode)
if seek_version:
m = RE_VERSION.match(line)
if m:
seek_version = False
seek_plan = True
seek_test = True
continue
elif not self.strict:
continue
m = RE_PLAN.match(line)
if m:
if seek_plan and on_top_level:
d = m.groupdict()
self.tests_planned = int(d.get('end', 0))
seek_plan = False
# Stop processing if tests were found before the plan
# if plan is at the end, it must be the last line
# -> stop processing
if self.__tests_counter > 0:
break
continue
elif not on_top_level:
continue
if seek_test:
m = RE_TEST_LINE.match(line)
if m and on_top_level:
self.__tests_counter += 1
t_attrs = m.groupdict()
if t_attrs['id'] is None:
t_attrs['id'] = self.__tests_counter
t_attrs['id'] = int(t_attrs['id'])
if t_attrs['id'] < self.__tests_counter:
raise ValueError(
"Descending test id on line: %r" % line)
# according to TAP13 specs, missing tests must be handled
# as 'not ok'
# here we add the missing tests in sequence
while t_attrs['id'] > self.__tests_counter:
comment = 'DIAG: Test %s not present' % \
self.__tests_counter
self.tests.append(Test('not ok', self.__tests_counter,
comment=comment))
self.__tests_counter += 1
t = Test(**t_attrs)
self.tests.append(t)
in_test = True
continue
elif not on_top_level:
continue
if self.strict:
raise ValueError('Wrong TAP line: [' + raw_line + ']')
if self.tests_planned is None:
# TODO: raise better error than ValueError
raise ValueError("Missing plan in the TAP source")
if len(self.tests) != self.tests_planned:
comment = 'DIAG: Expected %s tests, got %s' % \
(self.tests_planned, len(self.tests))
self.tests.append(Test('not ok', len(self.tests), comment=comment))
def parse(self, source):
if isinstance(source, (str, unicode)):
self._parse(StringIO(source))
elif hasattr(source, "__iter__"):
self._parse(source)
if __name__ == "__main__":
input = """
TAP version 13
ok 1 - Input file opened
not ok 2 - First line of the input valid
---
message: 'First line invalid'
severity: fail
data:
got: 'Flirble'
expect: 'Fnible'
...
ok - Read the rest of the file
not ok 5 - Summarized correctly # TODO Not written yet
---
message: "Can't make summary yet"
severity: todo
...
ok Description
# Diagnostic
---
message: 'Failure message'
severity: fail
data:
got:
- 1
- 3
- 2
expect:
- 1
- 2
- 3
...
1..6
"""
t = TAP13()
t.parse(input)
import pprint
for test in t.tests:
print(test.result, test.id, test.description, "#", test.directive,
test.comment)
pprint.pprint(test._yaml_buffer)
pprint.pprint(test.yaml)
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