1 # Copyright 2014 The Chromium Authors. All rights reserved.
2 # Use of this source code is governed by a BSD-style license that can be
3 # found in the LICENSE file.
12 # TODO(dcheng): It's kind of horrible that this is copy and pasted from
13 # presubmit_canned_checks.py, but it's far easier than any of the alternatives.
14 def _ReportErrorFileAndLine(filename, line_num, dummy_line):
15 """Default error formatter for _FindNewViolationsOfRule."""
16 return '%s:%s' % (filename, line_num)
19 class MockCannedChecks(object):
20 def _FindNewViolationsOfRule(self, callable_rule, input_api,
21 source_file_filter=None,
22 error_formatter=_ReportErrorFileAndLine):
23 """Find all newly introduced violations of a per-line rule (a callable).
26 callable_rule: a callable taking a file extension and line of input and
27 returning True if the rule is satisfied and False if there was a
29 input_api: object to enumerate the affected files.
30 source_file_filter: a filter to be passed to the input api.
31 error_formatter: a callable taking (filename, line_number, line) and
32 returning a formatted error string.
35 A list of the newly-introduced violations reported by the rule.
38 for f in input_api.AffectedFiles(include_deletes=False,
39 file_filter=source_file_filter):
40 # For speed, we do two passes, checking first the full file. Shelling out
41 # to the SCM to determine the changed region can be quite expensive on
42 # Win32. Assuming that most files will be kept problem-free, we can
43 # skip the SCM operations most of the time.
44 extension = str(f.LocalPath()).rsplit('.', 1)[-1]
45 if all(callable_rule(extension, line) for line in f.NewContents()):
46 continue # No violation found in full text: can skip considering diff.
48 for line_num, line in f.ChangedContents():
49 if not callable_rule(extension, line):
50 errors.append(error_formatter(f.LocalPath(), line_num, line))
55 class MockInputApi(object):
56 """Mock class for the InputApi class.
58 This class can be used for unittests for presubmit by initializing the files
59 attribute as the list of changed files.
62 DEFAULT_BLACK_LIST = ()
65 self.canned_checks = MockCannedChecks()
66 self.fnmatch = fnmatch
69 self.os_path = os.path
70 self.platform = sys.platform
71 self.python_executable = sys.executable
72 self.platform = sys.platform
73 self.subprocess = subprocess
75 self.is_committing = False
76 self.change = MockChange([])
77 self.presubmit_local_path = os.path.dirname(__file__)
79 def CreateMockFileInPath(self, f_list):
80 self.os_path.exists = lambda x: x in f_list
82 def AffectedFiles(self, file_filter=None, include_deletes=False):
83 for file in self.files:
84 if file_filter and not file_filter(file):
86 if not include_deletes and file.Action() == 'D':
90 def AffectedSourceFiles(self, file_filter=None):
91 return self.AffectedFiles(file_filter=file_filter)
93 def FilterSourceFile(self, file, white_list=(), black_list=()):
94 local_path = file.LocalPath()
95 found_in_white_list = not white_list
97 if type(white_list) is str:
98 raise TypeError('white_list should be an iterable of strings')
99 for pattern in white_list:
100 compiled_pattern = re.compile(pattern)
101 if compiled_pattern.search(local_path):
102 found_in_white_list = True
105 if type(black_list) is str:
106 raise TypeError('black_list should be an iterable of strings')
107 for pattern in black_list:
108 compiled_pattern = re.compile(pattern)
109 if compiled_pattern.search(local_path):
111 return found_in_white_list
113 def LocalPaths(self):
116 def PresubmitLocalPath(self):
117 return self.presubmit_local_path
119 def ReadFile(self, filename, mode='rU'):
120 if hasattr(filename, 'AbsoluteLocalPath'):
121 filename = filename.AbsoluteLocalPath()
122 for file_ in self.files:
123 if file_.LocalPath() == filename:
124 return '\n'.join(file_.NewContents())
125 # Otherwise, file is not in our mock API.
126 raise IOError, "No such file or directory: '%s'" % filename
129 class MockOutputApi(object):
130 """Mock class for the OutputApi class.
132 An instance of this class can be passed to presubmit unittests for outputing
133 various types of results.
136 class PresubmitResult(object):
137 def __init__(self, message, items=None, long_text=''):
138 self.message = message
140 self.long_text = long_text
145 class PresubmitError(PresubmitResult):
146 def __init__(self, message, items=None, long_text=''):
147 MockOutputApi.PresubmitResult.__init__(self, message, items, long_text)
150 class PresubmitPromptWarning(PresubmitResult):
151 def __init__(self, message, items=None, long_text=''):
152 MockOutputApi.PresubmitResult.__init__(self, message, items, long_text)
153 self.type = 'warning'
155 class PresubmitNotifyResult(PresubmitResult):
156 def __init__(self, message, items=None, long_text=''):
157 MockOutputApi.PresubmitResult.__init__(self, message, items, long_text)
160 class PresubmitPromptOrNotify(PresubmitResult):
161 def __init__(self, message, items=None, long_text=''):
162 MockOutputApi.PresubmitResult.__init__(self, message, items, long_text)
163 self.type = 'promptOrNotify'
168 def AppendCC(self, more_cc):
169 self.more_cc.extend(more_cc)
172 class MockFile(object):
173 """Mock class for the File class.
175 This class can be used to form the mock list of changed files in
176 MockInputApi for presubmit unittests.
179 def __init__(self, local_path, new_contents, old_contents=None, action='A'):
180 self._local_path = local_path
181 self._new_contents = new_contents
182 self._changed_contents = [(i + 1, l) for i, l in enumerate(new_contents)]
183 self._action = action
184 self._scm_diff = "--- /dev/null\n+++ %s\n@@ -0,0 +1,%d @@\n" % (local_path,
186 self._old_contents = old_contents
187 for l in new_contents:
188 self._scm_diff += "+%s\n" % l
193 def ChangedContents(self):
194 return self._changed_contents
196 def NewContents(self):
197 return self._new_contents
200 return self._local_path
202 def AbsoluteLocalPath(self):
203 return self._local_path
205 def GenerateScmDiff(self):
206 return self._scm_diff
208 def OldContents(self):
209 return self._old_contents
212 """os.path.basename is called on MockFile so we need an rfind method."""
213 return self._local_path.rfind(p)
215 def __getitem__(self, i):
216 """os.path.basename is called on MockFile so we need a get method."""
217 return self._local_path[i]
220 """os.path.basename is called on MockFile so we need a len method."""
221 return len(self._local_path)
224 class MockAffectedFile(MockFile):
225 def AbsoluteLocalPath(self):
226 return self._local_path
229 class MockChange(object):
230 """Mock class for Change class.
232 This class can be used in presubmit unittests to mock the query of the
236 def __init__(self, changed_files):
237 self._changed_files = changed_files
239 def LocalPaths(self):
240 return self._changed_files
242 def AffectedFiles(self, include_dirs=False, include_deletes=True,
244 return self._changed_files