summaryrefslogtreecommitdiffstats
blob: eced8a81f2308381a8304d30ad05ddcab9b8b6d2 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
#!/usr/bin/env python
#
# Copyright 2008, Google Inc.
# All rights reserved.
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions are
# met:
#
#     * Redistributions of source code must retain the above copyright
# notice, this list of conditions and the following disclaimer.
#     * Redistributions in binary form must reproduce the above
# copyright notice, this list of conditions and the following disclaimer
# in the documentation and/or other materials provided with the
# distribution.
#     * Neither the name of Google Inc. nor the names of its
# contributors may be used to endorse or promote products derived from
# this software without specific prior written permission.
#
# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

"""Tests the text output of Google C++ Mocking Framework.

SYNOPSIS
       gmock_output_test.py --build_dir=BUILD/DIR --gengolden
         # where BUILD/DIR contains the built gmock_output_test_ file.
       gmock_output_test.py --gengolden
       gmock_output_test.py
"""

__author__ = 'wan@google.com (Zhanyong Wan)'

import os
import re
import sys

import gmock_test_utils


# The flag for generating the golden file
GENGOLDEN_FLAG = '--gengolden'

PROGRAM_PATH = gmock_test_utils.GetTestExecutablePath('gmock_output_test_')
COMMAND = [PROGRAM_PATH, '--gtest_stack_trace_depth=0', '--gtest_print_time=0']
GOLDEN_NAME = 'gmock_output_test_golden.txt'
GOLDEN_PATH = os.path.join(gmock_test_utils.GetSourceDir(), GOLDEN_NAME)


def ToUnixLineEnding(s):
  """Changes all Windows/Mac line endings in s to UNIX line endings."""

  return s.replace('\r\n', '\n').replace('\r', '\n')


def RemoveReportHeaderAndFooter(output):
  """Removes Google Test result report's header and footer from the output."""

  output = re.sub(r'.*gtest_main.*\n', '', output)
  output = re.sub(r'\[.*\d+ tests.*\n', '', output)
  output = re.sub(r'\[.* test environment .*\n', '', output)
  output = re.sub(r'\[=+\] \d+ tests .* ran.*', '', output)
  output = re.sub(r'.* FAILED TESTS\n', '', output)
  return output


def RemoveLocations(output):
  """Removes all file location info from a Google Test program's output.

  Args:
       output:  the output of a Google Test program.

  Returns:
       output with all file location info (in the form of
       'DIRECTORY/FILE_NAME:LINE_NUMBER: 'or
       'DIRECTORY\\FILE_NAME(LINE_NUMBER): ') replaced by
       'FILE:#: '.
  """

  return re.sub(r'.*[/\\](.+)(\:\d+|\(\d+\))\:', 'FILE:#:', output)


def NormalizeErrorMarker(output):
  """Normalizes the error marker, which is different on Windows vs on Linux."""

  return re.sub(r' error: ', ' Failure\n', output)


def RemoveMemoryAddresses(output):
  """Removes memory addresses from the test output."""

  return re.sub(r'@\w+', '@0x#', output)


def RemoveTestNamesOfLeakedMocks(output):
  """Removes the test names of leaked mock objects from the test output."""

  return re.sub(r'\(used in test .+\) ', '', output)


def GetLeakyTests(output):
  """Returns a list of test names that leak mock objects."""

  # findall() returns a list of all matches of the regex in output.
  # For example, if '(used in test FooTest.Bar)' is in output, the
  # list will contain 'FooTest.Bar'.
  return re.findall(r'\(used in test (.+)\)', output)


def GetNormalizedOutputAndLeakyTests(output):
  """Normalizes the output of gmock_output_test_.

  Args:
    output: The test output.

  Returns:
    A tuple (the normalized test output, the list of test names that have
    leaked mocks).
  """

  output = ToUnixLineEnding(output)
  output = RemoveReportHeaderAndFooter(output)
  output = NormalizeErrorMarker(output)
  output = RemoveLocations(output)
  output = RemoveMemoryAddresses(output)
  return (RemoveTestNamesOfLeakedMocks(output), GetLeakyTests(output))


def GetShellCommandOutput(cmd):
  """Runs a command in a sub-process, and returns its STDOUT in a string."""

  return gmock_test_utils.Subprocess(cmd, capture_stderr=False).output


def GetNormalizedCommandOutputAndLeakyTests(cmd):
  """Runs a command and returns its normalized output and a list of leaky tests.

  Args:
    cmd:  the shell command.
  """

  # Disables exception pop-ups on Windows.
  os.environ['GTEST_CATCH_EXCEPTIONS'] = '1'
  return GetNormalizedOutputAndLeakyTests(GetShellCommandOutput(cmd))


class GMockOutputTest(gmock_test_utils.TestCase):
  def testOutput(self):
    (output, leaky_tests) = GetNormalizedCommandOutputAndLeakyTests(COMMAND)
    golden_file = open(GOLDEN_PATH, 'rb')
    golden = golden_file.read()
    golden_file.close()

    # The normalized output should match the golden file.
    self.assertEquals(golden, output)

    # The raw output should contain 2 leaked mock object errors for
    # test GMockOutputTest.CatchesLeakedMocks.
    self.assertEquals(['GMockOutputTest.CatchesLeakedMocks',
                       'GMockOutputTest.CatchesLeakedMocks'],
                      leaky_tests)


if __name__ == '__main__':
  if sys.argv[1:] == [GENGOLDEN_FLAG]:
    (output, _) = GetNormalizedCommandOutputAndLeakyTests(COMMAND)
    golden_file = open(GOLDEN_PATH, 'wb')
    golden_file.write(output)
    golden_file.close()
  else:
    gmock_test_utils.Main()