xref: /freebsd/contrib/googletest/googlemock/test/gmock_output_test.py (revision 95eb4b873b6a8b527c5bd78d7191975dfca38998) 
1#!/usr/bin/env python
2#
3# Copyright 2008, Google Inc.
4# All rights reserved.
5#
6# Redistribution and use in source and binary forms, with or without
7# modification, are permitted provided that the following conditions are
8# met:
9#
10#     * Redistributions of source code must retain the above copyright
11# notice, this list of conditions and the following disclaimer.
12#     * Redistributions in binary form must reproduce the above
13# copyright notice, this list of conditions and the following disclaimer
14# in the documentation and/or other materials provided with the
15# distribution.
16#     * Neither the name of Google Inc. nor the names of its
17# contributors may be used to endorse or promote products derived from
18# this software without specific prior written permission.
19#
20# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
21# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
22# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
23# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
24# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
25# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
26# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
27# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
28# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
29# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
30# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
31
32r"""Tests the text output of Google C++ Mocking Framework.
33
34To update the golden file:
35gmock_output_test.py --build_dir=BUILD/DIR --gengolden
36where BUILD/DIR contains the built gmock_output_test_ file.
37gmock_output_test.py --gengolden
38gmock_output_test.py
39
40"""
41
42from io import open  # pylint: disable=redefined-builtin, g-importing-member
43import os
44import re
45import sys
46from googlemock.test import gmock_test_utils
47
48
49# The flag for generating the golden file
50GENGOLDEN_FLAG = '--gengolden'
51
52PROGRAM_PATH = gmock_test_utils.GetTestExecutablePath('gmock_output_test_')
53COMMAND = [PROGRAM_PATH, '--gtest_stack_trace_depth=0', '--gtest_print_time=0']
54GOLDEN_NAME = 'gmock_output_test_golden.txt'
55GOLDEN_PATH = os.path.join(gmock_test_utils.GetSourceDir(), GOLDEN_NAME)
56
57
58def ToUnixLineEnding(s):
59  """Changes all Windows/Mac line endings in s to UNIX line endings."""
60
61  return s.replace('\r\n', '\n').replace('\r', '\n')
62
63
64def RemoveReportHeaderAndFooter(output):
65  """Removes Google Test result report's header and footer from the output."""
66
67  output = re.sub(r'.*gtest_main.*\n', '', output)
68  output = re.sub(r'\[.*\d+ tests.*\n', '', output)
69  output = re.sub(r'\[.* test environment .*\n', '', output)
70  output = re.sub(r'\[=+\] \d+ tests .* ran.*', '', output)
71  output = re.sub(r'.* FAILED TESTS\n', '', output)
72  return output
73
74
75def RemoveLocations(output):
76  """Removes all file location info from a Google Test program's output.
77
78  Args:
79       output:  the output of a Google Test program.
80
81  Returns:
82       output with all file location info (in the form of
83       'DIRECTORY/FILE_NAME:LINE_NUMBER: 'or
84       'DIRECTORY\\FILE_NAME(LINE_NUMBER): ') replaced by
85       'FILE:#: '.
86  """
87
88  return re.sub(r'.*[/\\](.+)(\:\d+|\(\d+\))\:', 'FILE:#:', output)
89
90
91def NormalizeErrorMarker(output):
92  """Normalizes the error marker, which is different on Windows vs on Linux."""
93
94  return re.sub(r' error: ', ' Failure\n', output)
95
96
97def RemoveMemoryAddresses(output):
98  """Removes memory addresses from the test output."""
99
100  return re.sub(r'@\w+', '@0x#', output)
101
102
103def RemoveTestNamesOfLeakedMocks(output):
104  """Removes the test names of leaked mock objects from the test output."""
105
106  return re.sub(r'\(used in test .+\) ', '', output)
107
108
109def GetLeakyTests(output):
110  """Returns a list of test names that leak mock objects."""
111
112  # findall() returns a list of all matches of the regex in output.
113  # For example, if '(used in test FooTest.Bar)' is in output, the
114  # list will contain 'FooTest.Bar'.
115  return re.findall(r'\(used in test (.+)\)', output)
116
117
118def GetNormalizedOutputAndLeakyTests(output):
119  """Normalizes the output of gmock_output_test_.
120
121  Args:
122    output: The test output.
123
124  Returns:
125    A tuple (the normalized test output, the list of test names that have
126    leaked mocks).
127  """
128
129  output = ToUnixLineEnding(output)
130  output = RemoveReportHeaderAndFooter(output)
131  output = NormalizeErrorMarker(output)
132  output = RemoveLocations(output)
133  output = RemoveMemoryAddresses(output)
134  return (RemoveTestNamesOfLeakedMocks(output), GetLeakyTests(output))
135
136
137def GetShellCommandOutput(cmd):
138  """Runs a command in a sub-process, and returns its STDOUT in a string."""
139
140  return gmock_test_utils.Subprocess(cmd, capture_stderr=False).output
141
142
143def GetNormalizedCommandOutputAndLeakyTests(cmd):
144  """Runs a command and returns its normalized output and a list of leaky tests.
145
146  Args:
147    cmd:  the shell command.
148  """
149
150  # Disables exception pop-ups on Windows.
151  os.environ['GTEST_CATCH_EXCEPTIONS'] = '1'
152  return GetNormalizedOutputAndLeakyTests(GetShellCommandOutput(cmd))
153
154
155class GMockOutputTest(gmock_test_utils.TestCase):
156
157  def testOutput(self):
158    (output, leaky_tests) = GetNormalizedCommandOutputAndLeakyTests(COMMAND)
159    golden_file = open(GOLDEN_PATH, 'rb')
160    golden = golden_file.read().decode('utf-8')
161    golden_file.close()
162    # On Windows the repository might have been checked out with \r\n line
163    # endings, so normalize it here.
164    golden = ToUnixLineEnding(golden)
165
166    # The normalized output should match the golden file.
167    self.assertEqual(golden, output)
168
169    # The raw output should contain 2 leaked mock object errors for
170    # test GMockOutputTest.CatchesLeakedMocks.
171    self.assertEqual(
172        [
173            'GMockOutputTest.CatchesLeakedMocks',
174            'GMockOutputTest.CatchesLeakedMocks',
175        ],
176        leaky_tests,
177    )
178
179
180if __name__ == '__main__':
181  if sys.argv[1:] == [GENGOLDEN_FLAG]:
182    (output, _) = GetNormalizedCommandOutputAndLeakyTests(COMMAND)
183    golden_file = open(GOLDEN_PATH, 'wb')
184    golden_file.write(output)
185    golden_file.close()
186    # Suppress the error "googletest was imported but a call to its main()
187    # was never detected."
188    os._exit(0)
189  else:
190    gmock_test_utils.Main()
191