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nix: Pass the backwards compatible fetchgit to python and node packages.
nix: Pass the backwards compatible fetchgit to python and node packages.

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test_diffs.py
748 lines | 26.1 KiB | text/x-python | PythonLexer
# -*- coding: utf-8 -*-
# Copyright (C) 2010-2016 RhodeCode GmbH
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU Affero General Public License, version 3
# (only), as published by the Free Software Foundation.
#
# 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 Affero General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.
#
# This program is dual-licensed. If you wish to learn more about the
# RhodeCode Enterprise Edition, including its added features, Support services,
# and proprietary license terms, please see https://rhodecode.com/licenses/
import textwrap
import pytest
from rhodecode.lib.diffs import (
DiffProcessor, wrapped_diff,
NEW_FILENODE, DEL_FILENODE, MOD_FILENODE, RENAMED_FILENODE,
CHMOD_FILENODE, BIN_FILENODE, COPIED_FILENODE)
from rhodecode.tests.fixture import Fixture
from rhodecode.lib.vcs.backends.git.repository import GitDiff
from rhodecode.lib.vcs.backends.hg.repository import MercurialDiff
from rhodecode.lib.vcs.backends.svn.repository import SubversionDiff
fixture = Fixture()
def test_wrapped_diff_limited_file_diff(vcsbackend_random):
vcsbackend = vcsbackend_random
repo = vcsbackend.create_repo()
vcsbackend.add_file(repo, 'a_file', content="line 1\nline 2\nline3\n")
commit = repo.get_commit()
file_node = commit.get_node('a_file')
# Only limit the file diff to trigger the code path
result = wrapped_diff(
None, file_node, diff_limit=10000, file_limit=1)
data = result[5]
# Verify that the limits were applied
assert data['exceeds_limit'] is True
assert data['is_limited_diff'] is True
def test_diffprocessor_as_html_with_comments():
raw_diff = textwrap.dedent('''
diff --git a/setup.py b/setup.py
index 5b36422..cfd698e 100755
--- a/setup.py
+++ b/setup.py
@@ -2,7 +2,7 @@
#!/usr/bin/python
# Setup file for X
# Copyright (C) No one
-
+x
try:
from setuptools import setup, Extension
except ImportError:
''')
diff = GitDiff(raw_diff)
processor = DiffProcessor(diff)
processor.prepare()
# Note that the cell with the context in line 5 (in the html) has the
# no-comment class, which will prevent the add comment icon to be displayed.
expected_html = textwrap.dedent('''
<table class="code-difftable">
<tr class="line context">
<td class="add-comment-line"><span class="add-comment-content"></span></td><td class="comment-toggle tooltip" title="Toggle Comment Thread"><i class="icon-comment"></i></td>
<td class="lineno old">...</td>
<td class="lineno new">...</td>
<td class="code no-comment">
<pre>@@ -2,7 +2,7 @@
</pre>
</td>
</tr>
<tr class="line unmod">
<td class="add-comment-line"><span class="add-comment-content"><a href="#"><span class="icon-comment-add"></span></a></span></td><td class="comment-toggle tooltip" title="Toggle Comment Thread"><i class="icon-comment"></i></td>
<td id="setuppy_o2" class="lineno old"><a href="#setuppy_o2" class="tooltip"
title="Click to select line">2</a></td>
<td id="setuppy_n2" class="lineno new"><a href="#setuppy_n2" class="tooltip"
title="Click to select line">2</a></td>
<td class="code">
<pre>#!/usr/bin/python
</pre>
</td>
</tr>
<tr class="line unmod">
<td class="add-comment-line"><span class="add-comment-content"><a href="#"><span class="icon-comment-add"></span></a></span></td><td class="comment-toggle tooltip" title="Toggle Comment Thread"><i class="icon-comment"></i></td>
<td id="setuppy_o3" class="lineno old"><a href="#setuppy_o3" class="tooltip"
title="Click to select line">3</a></td>
<td id="setuppy_n3" class="lineno new"><a href="#setuppy_n3" class="tooltip"
title="Click to select line">3</a></td>
<td class="code">
<pre># Setup file for X
</pre>
</td>
</tr>
<tr class="line unmod">
<td class="add-comment-line"><span class="add-comment-content"><a href="#"><span class="icon-comment-add"></span></a></span></td><td class="comment-toggle tooltip" title="Toggle Comment Thread"><i class="icon-comment"></i></td>
<td id="setuppy_o4" class="lineno old"><a href="#setuppy_o4" class="tooltip"
title="Click to select line">4</a></td>
<td id="setuppy_n4" class="lineno new"><a href="#setuppy_n4" class="tooltip"
title="Click to select line">4</a></td>
<td class="code">
<pre># Copyright (C) No one
</pre>
</td>
</tr>
<tr class="line del">
<td class="add-comment-line"><span class="add-comment-content"><a href="#"><span class="icon-comment-add"></span></a></span></td><td class="comment-toggle tooltip" title="Toggle Comment Thread"><i class="icon-comment"></i></td>
<td id="setuppy_o5" class="lineno old"><a href="#setuppy_o5" class="tooltip"
title="Click to select line">5</a></td>
<td class="lineno new"><a href="#setuppy_n" class="tooltip"
title="Click to select line"></a></td>
<td class="code">
<pre>
</pre>
</td>
</tr>
<tr class="line add">
<td class="add-comment-line"><span class="add-comment-content"><a href="#"><span class="icon-comment-add"></span></a></span></td><td class="comment-toggle tooltip" title="Toggle Comment Thread"><i class="icon-comment"></i></td>
<td class="lineno old"><a href="#setuppy_o" class="tooltip"
title="Click to select line"></a></td>
<td id="setuppy_n5" class="lineno new"><a href="#setuppy_n5" class="tooltip"
title="Click to select line">5</a></td>
<td class="code">
<pre><ins>x</ins>
</pre>
</td>
</tr>
<tr class="line unmod">
<td class="add-comment-line"><span class="add-comment-content"><a href="#"><span class="icon-comment-add"></span></a></span></td><td class="comment-toggle tooltip" title="Toggle Comment Thread"><i class="icon-comment"></i></td>
<td id="setuppy_o6" class="lineno old"><a href="#setuppy_o6" class="tooltip"
title="Click to select line">6</a></td>
<td id="setuppy_n6" class="lineno new"><a href="#setuppy_n6" class="tooltip"
title="Click to select line">6</a></td>
<td class="code">
<pre>try:
</pre>
</td>
</tr>
<tr class="line unmod">
<td class="add-comment-line"><span class="add-comment-content"><a href="#"><span class="icon-comment-add"></span></a></span></td><td class="comment-toggle tooltip" title="Toggle Comment Thread"><i class="icon-comment"></i></td>
<td id="setuppy_o7" class="lineno old"><a href="#setuppy_o7" class="tooltip"
title="Click to select line">7</a></td>
<td id="setuppy_n7" class="lineno new"><a href="#setuppy_n7" class="tooltip"
title="Click to select line">7</a></td>
<td class="code">
<pre> from setuptools import setup, Extension
</pre>
</td>
</tr>
<tr class="line unmod">
<td class="add-comment-line"><span class="add-comment-content"><a href="#"><span class="icon-comment-add"></span></a></span></td><td class="comment-toggle tooltip" title="Toggle Comment Thread"><i class="icon-comment"></i></td>
<td id="setuppy_o8" class="lineno old"><a href="#setuppy_o8" class="tooltip"
title="Click to select line">8</a></td>
<td id="setuppy_n8" class="lineno new"><a href="#setuppy_n8" class="tooltip"
title="Click to select line">8</a></td>
<td class="code">
<pre>except ImportError:
</pre>
</td>
</tr>
</table>
''').strip()
html = processor.as_html(enable_comments=True).replace('\t', ' ')
assert html == expected_html
class TestMixedFilenameEncodings:
@pytest.fixture(scope="class")
def raw_diff(self):
return fixture.load_resource(
'hg_diff_mixed_filename_encodings.diff')
@pytest.fixture
def processor(self, raw_diff):
diff = MercurialDiff(raw_diff)
processor = DiffProcessor(diff)
return processor
def test_filenames_are_decoded_to_unicode(self, processor):
diff_data = processor.prepare()
filenames = [item['filename'] for item in diff_data]
assert filenames == [
u'späcial-utf8.txt', u'sp�cial-cp1252.txt', u'sp�cial-latin1.txt']
def test_raw_diff_is_decoded_to_unicode(self, processor):
diff_data = processor.prepare()
raw_diffs = [item['raw_diff'] for item in diff_data]
new_file_message = u'\nnew file mode 100644\n'
expected_raw_diffs = [
u' a/späcial-utf8.txt b/späcial-utf8.txt' + new_file_message,
u' a/sp�cial-cp1252.txt b/sp�cial-cp1252.txt' + new_file_message,
u' a/sp�cial-latin1.txt b/sp�cial-latin1.txt' + new_file_message]
assert raw_diffs == expected_raw_diffs
def test_as_raw_preserves_the_encoding(self, processor, raw_diff):
assert processor.as_raw() == raw_diff
# TODO: mikhail: format the following data structure properly
DIFF_FIXTURES = [
('hg',
'hg_diff_add_single_binary_file.diff',
[('US Warszawa.jpg', 'A',
{'added': 0,
'deleted': 0,
'binary': True,
'ops': {NEW_FILENODE: 'new file 100755',
BIN_FILENODE: 'binary diff hidden'}}),
]),
('hg',
'hg_diff_mod_single_binary_file.diff',
[('US Warszawa.jpg', 'M',
{'added': 0,
'deleted': 0,
'binary': True,
'ops': {MOD_FILENODE: 'modified file',
BIN_FILENODE: 'binary diff hidden'}}),
]),
('hg',
'hg_diff_mod_single_file_and_rename_and_chmod.diff',
[('README', 'M',
{'added': 3,
'deleted': 0,
'binary': False,
'ops': {MOD_FILENODE: 'modified file',
RENAMED_FILENODE: 'file renamed from README.rst to README',
CHMOD_FILENODE: 'modified file chmod 100755 => 100644'}}),
]),
('hg',
'hg_diff_mod_file_and_rename.diff',
[('README.rst', 'M',
{'added': 3,
'deleted': 0,
'binary': False,
'ops': {MOD_FILENODE: 'modified file',
RENAMED_FILENODE: 'file renamed from README to README.rst'}}),
]),
('hg',
'hg_diff_del_single_binary_file.diff',
[('US Warszawa.jpg', 'D',
{'added': 0,
'deleted': 0,
'binary': True,
'ops': {DEL_FILENODE: 'deleted file',
BIN_FILENODE: 'binary diff hidden'}}),
]),
('hg',
'hg_diff_chmod_and_mod_single_binary_file.diff',
[('gravatar.png', 'M',
{'added': 0,
'deleted': 0,
'binary': True,
'ops': {CHMOD_FILENODE: 'modified file chmod 100644 => 100755',
BIN_FILENODE: 'binary diff hidden'}}),
]),
('hg',
'hg_diff_chmod.diff',
[('file', 'M',
{'added': 0,
'deleted': 0,
'binary': True,
'ops': {CHMOD_FILENODE: 'modified file chmod 100755 => 100644'}}),
]),
('hg',
'hg_diff_rename_file.diff',
[('file_renamed', 'M',
{'added': 0,
'deleted': 0,
'binary': True,
'ops': {RENAMED_FILENODE: 'file renamed from file to file_renamed'}}),
]),
('hg',
'hg_diff_rename_and_chmod_file.diff',
[('README', 'M',
{'added': 0,
'deleted': 0,
'binary': True,
'ops': {CHMOD_FILENODE: 'modified file chmod 100644 => 100755',
RENAMED_FILENODE: 'file renamed from README.rst to README'}}),
]),
('hg',
'hg_diff_binary_and_normal.diff',
[('img/baseline-10px.png', 'A',
{'added': 0,
'deleted': 0,
'binary': True,
'ops': {NEW_FILENODE: 'new file 100644',
BIN_FILENODE: 'binary diff hidden'}}),
('js/jquery/hashgrid.js', 'A',
{'added': 340,
'deleted': 0,
'binary': False,
'ops': {NEW_FILENODE: 'new file 100755'}}),
('index.html', 'M',
{'added': 3,
'deleted': 2,
'binary': False,
'ops': {MOD_FILENODE: 'modified file'}}),
('less/docs.less', 'M',
{'added': 34,
'deleted': 0,
'binary': False,
'ops': {MOD_FILENODE: 'modified file'}}),
('less/scaffolding.less', 'M',
{'added': 1,
'deleted': 3,
'binary': False,
'ops': {MOD_FILENODE: 'modified file'}}),
('readme.markdown', 'M',
{'added': 1,
'deleted': 10,
'binary': False,
'ops': {MOD_FILENODE: 'modified file'}}),
('img/baseline-20px.png', 'D',
{'added': 0,
'deleted': 0,
'binary': True,
'ops': {DEL_FILENODE: 'deleted file',
BIN_FILENODE: 'binary diff hidden'}}),
('js/global.js', 'D',
{'added': 0,
'deleted': 75,
'binary': False,
'ops': {DEL_FILENODE: 'deleted file'}})
]),
('git',
'git_diff_chmod.diff',
[('work-horus.xls', 'M',
{'added': 0,
'deleted': 0,
'binary': True,
'ops': {CHMOD_FILENODE: 'modified file chmod 100644 => 100755'}})
]),
('git',
'git_diff_rename_file.diff',
[('file.xls', 'M',
{'added': 0,
'deleted': 0,
'binary': True,
'ops': {
RENAMED_FILENODE: 'file renamed from work-horus.xls to file.xls'}})
]),
('git',
'git_diff_mod_single_binary_file.diff',
[('US Warszawa.jpg', 'M',
{'added': 0,
'deleted': 0,
'binary': True,
'ops': {MOD_FILENODE: 'modified file',
BIN_FILENODE: 'binary diff hidden'}})
]),
('git',
'git_diff_binary_and_normal.diff',
[('img/baseline-10px.png', 'A',
{'added': 0,
'deleted': 0,
'binary': True,
'ops': {NEW_FILENODE: 'new file 100644',
BIN_FILENODE: 'binary diff hidden'}}),
('js/jquery/hashgrid.js', 'A',
{'added': 340,
'deleted': 0,
'binary': False,
'ops': {NEW_FILENODE: 'new file 100755'}}),
('index.html', 'M',
{'added': 3,
'deleted': 2,
'binary': False,
'ops': {MOD_FILENODE: 'modified file'}}),
('less/docs.less', 'M',
{'added': 34,
'deleted': 0,
'binary': False,
'ops': {MOD_FILENODE: 'modified file'}}),
('less/scaffolding.less', 'M',
{'added': 1,
'deleted': 3,
'binary': False,
'ops': {MOD_FILENODE: 'modified file'}}),
('readme.markdown', 'M',
{'added': 1,
'deleted': 10,
'binary': False,
'ops': {MOD_FILENODE: 'modified file'}}),
('img/baseline-20px.png', 'D',
{'added': 0,
'deleted': 0,
'binary': True,
'ops': {DEL_FILENODE: 'deleted file',
BIN_FILENODE: 'binary diff hidden'}}),
('js/global.js', 'D',
{'added': 0,
'deleted': 75,
'binary': False,
'ops': {DEL_FILENODE: 'deleted file'}}),
]),
('hg',
'diff_with_diff_data.diff',
[('vcs/backends/base.py', 'M',
{'added': 18,
'deleted': 2,
'binary': False,
'ops': {MOD_FILENODE: 'modified file'}}),
('vcs/backends/git/repository.py', 'M',
{'added': 46,
'deleted': 15,
'binary': False,
'ops': {MOD_FILENODE: 'modified file'}}),
('vcs/backends/hg.py', 'M',
{'added': 22,
'deleted': 3,
'binary': False,
'ops': {MOD_FILENODE: 'modified file'}}),
('vcs/tests/test_git.py', 'M',
{'added': 5,
'deleted': 5,
'binary': False,
'ops': {MOD_FILENODE: 'modified file'}}),
('vcs/tests/test_repository.py', 'M',
{'added': 174,
'deleted': 2,
'binary': False,
'ops': {MOD_FILENODE: 'modified file'}}),
]),
('hg',
'hg_diff_copy_file.diff',
[('file2', 'M',
{'added': 0,
'deleted': 0,
'binary': True,
'ops': {COPIED_FILENODE: 'file copied from file1 to file2'}}),
]),
('hg',
'hg_diff_copy_and_modify_file.diff',
[('file3', 'M',
{'added': 1,
'deleted': 0,
'binary': False,
'ops': {COPIED_FILENODE: 'file copied from file2 to file3',
MOD_FILENODE: 'modified file'}}),
]),
('hg',
'hg_diff_copy_and_chmod_file.diff',
[('file4', 'M',
{'added': 0,
'deleted': 0,
'binary': True,
'ops': {COPIED_FILENODE: 'file copied from file3 to file4',
CHMOD_FILENODE: 'modified file chmod 100644 => 100755'}}),
]),
('hg',
'hg_diff_copy_chmod_and_edit_file.diff',
[('file5', 'M',
{'added': 2,
'deleted': 1,
'binary': False,
'ops': {COPIED_FILENODE: 'file copied from file4 to file5',
CHMOD_FILENODE: 'modified file chmod 100755 => 100644',
MOD_FILENODE: 'modified file'}})]),
# Diffs to validate rename and copy file with space in its name
('git',
'git_diff_rename_file_with_spaces.diff',
[('file_with_ two spaces.txt', 'M',
{'added': 0,
'deleted': 0,
'binary': True,
'ops': {
RENAMED_FILENODE: (
'file renamed from file_with_ spaces.txt to file_with_ '
' two spaces.txt')}
}), ]),
('hg',
'hg_diff_rename_file_with_spaces.diff',
[('file_changed _.txt', 'M',
{'added': 0,
'deleted': 0,
'binary': True,
'ops': {
RENAMED_FILENODE: (
'file renamed from file_ with update.txt to file_changed'
' _.txt')}
}), ]),
('hg',
'hg_diff_copy_file_with_spaces.diff',
[('file_copied_ with spaces.txt', 'M',
{'added': 0,
'deleted': 0,
'binary': True,
'ops': {
COPIED_FILENODE: (
'file copied from file_changed_without_spaces.txt to'
' file_copied_ with spaces.txt')}
}),
]),
# special signs from git
('git',
'git_diff_binary_special_files.diff',
[('css/_Icon\\r', 'A',
{'added': 0,
'deleted': 0,
'binary': True,
'ops': {NEW_FILENODE: 'new file 100644',
BIN_FILENODE: 'binary diff hidden'}
}),
]),
('git',
'git_diff_binary_special_files_2.diff',
[('css/Icon\\r', 'A',
{'added': 0,
'deleted': 0,
'binary': True,
'ops': {NEW_FILENODE: 'new file 100644', }
}),
]),
# TODO: mikhail: do we still need this?
# (
# 'hg',
# 'large_diff.diff',
# [
# ('.hgignore', 'A', {
# 'deleted': 0, 'binary': False, 'added': 3, 'ops': {
# 1: 'new file 100644'}}),
# (
# 'MANIFEST.in', 'A',
# {'deleted': 0, 'binary': False, 'added': 3, 'ops': {
# 1: 'new file 100644'}}),
# (
# 'README.txt', 'A',
# {'deleted': 0, 'binary': False, 'added': 19, 'ops': {
# 1: 'new file 100644'}}),
# (
# 'development.ini', 'A', {
# 'deleted': 0, 'binary': False, 'added': 116, 'ops': {
# 1: 'new file 100644'}}),
# (
# 'docs/index.txt', 'A', {
# 'deleted': 0, 'binary': False, 'added': 19, 'ops': {
# 1: 'new file 100644'}}),
# (
# 'ez_setup.py', 'A', {
# 'deleted': 0, 'binary': False, 'added': 276, 'ops': {
# 1: 'new file 100644'}}),
# (
# 'hgapp.py', 'A', {
# 'deleted': 0, 'binary': False, 'added': 26, 'ops': {
# 1: 'new file 100644'}}),
# (
# 'hgwebdir.config', 'A', {
# 'deleted': 0, 'binary': False, 'added': 21, 'ops': {
# 1: 'new file 100644'}}),
# (
# 'pylons_app.egg-info/PKG-INFO', 'A', {
# 'deleted': 0, 'binary': False, 'added': 10, 'ops': {
# 1: 'new file 100644'}}),
# (
# 'pylons_app.egg-info/SOURCES.txt', 'A', {
# 'deleted': 0, 'binary': False, 'added': 33, 'ops': {
# 1: 'new file 100644'}}),
# (
# 'pylons_app.egg-info/dependency_links.txt', 'A', {
# 'deleted': 0, 'binary': False, 'added': 1, 'ops': {
# 1: 'new file 100644'}}),
# #TODO:
# ]
# ),
]
DIFF_FIXTURES_WITH_CONTENT = [
(
'hg', 'hg_diff_single_file_change_newline.diff',
[
(
'file_b', # filename
'A', # change
{ # stats
'added': 1,
'deleted': 0,
'binary': False,
'ops': {NEW_FILENODE: 'new file 100644', }
},
'@@ -0,0 +1 @@\n+test_content b\n' # diff
),
],
),
(
'hg', 'hg_diff_double_file_change_newline.diff',
[
(
'file_b', # filename
'A', # change
{ # stats
'added': 1,
'deleted': 0,
'binary': False,
'ops': {NEW_FILENODE: 'new file 100644', }
},
'@@ -0,0 +1 @@\n+test_content b\n' # diff
),
(
'file_c', # filename
'A', # change
{ # stats
'added': 1,
'deleted': 0,
'binary': False,
'ops': {NEW_FILENODE: 'new file 100644', }
},
'@@ -0,0 +1 @@\n+test_content c\n' # diff
),
],
),
(
'hg', 'hg_diff_double_file_change_double_newline.diff',
[
(
'file_b', # filename
'A', # change
{ # stats
'added': 1,
'deleted': 0,
'binary': False,
'ops': {NEW_FILENODE: 'new file 100644', }
},
'@@ -0,0 +1 @@\n+test_content b\n\n' # diff
),
(
'file_c', # filename
'A', # change
{ # stats
'added': 1,
'deleted': 0,
'binary': False,
'ops': {NEW_FILENODE: 'new file 100644', }
},
'@@ -0,0 +1 @@\n+test_content c\n' # diff
),
],
),
(
'hg', 'hg_diff_four_file_change_newline.diff',
[
(
'file', # filename
'A', # change
{ # stats
'added': 1,
'deleted': 0,
'binary': False,
'ops': {NEW_FILENODE: 'new file 100644', }
},
'@@ -0,0 +1,1 @@\n+file\n' # diff
),
(
'file2', # filename
'A', # change
{ # stats
'added': 1,
'deleted': 0,
'binary': False,
'ops': {NEW_FILENODE: 'new file 100644', }
},
'@@ -0,0 +1,1 @@\n+another line\n' # diff
),
(
'file3', # filename
'A', # change
{ # stats
'added': 1,
'deleted': 0,
'binary': False,
'ops': {NEW_FILENODE: 'new file 100644', }
},
'@@ -0,0 +1,1 @@\n+newline\n' # diff
),
(
'file4', # filename
'A', # change
{ # stats
'added': 1,
'deleted': 0,
'binary': False,
'ops': {NEW_FILENODE: 'new file 100644', }
},
'@@ -0,0 +1,1 @@\n+fil4\n\\ No newline at end of file' # diff
),
],
),
]
diff_class = {
'git': GitDiff,
'hg': MercurialDiff,
'svn': SubversionDiff,
}
@pytest.fixture(params=DIFF_FIXTURES)
def diff_fixture(request):
vcs, diff_fixture, expected = request.param
diff_txt = fixture.load_resource(diff_fixture)
diff = diff_class[vcs](diff_txt)
return diff, expected
def test_diff_lib(diff_fixture):
diff, expected_data = diff_fixture
diff_proc = DiffProcessor(diff)
diff_proc_d = diff_proc.prepare()
data = [(x['filename'], x['operation'], x['stats']) for x in diff_proc_d]
assert expected_data == data
@pytest.fixture(params=DIFF_FIXTURES_WITH_CONTENT)
def diff_fixture_w_content(request):
vcs, diff_fixture, expected = request.param
diff_txt = fixture.load_resource(diff_fixture)
diff = diff_class[vcs](diff_txt)
return diff, expected
def test_diff_lib_newlines(diff_fixture_w_content):
diff, expected_data = diff_fixture_w_content
diff_proc = DiffProcessor(diff)
diff_proc_d = diff_proc.prepare()
data = [(x['filename'], x['operation'], x['stats'], x['raw_diff'])
for x in diff_proc_d]
assert expected_data == data