GitPython/git/test/test_diff.py at master · pelson/GitPython · GitHub

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#-*-coding:utf-8-*-

# test_diff.py

# This module is part of GitPython and is released under

# the BSD License: http://www.opensource.org/licenses/bsd-license.php

import os

from git.test.lib import (

TestBase,

StringProcessAdapter,

fixture,

assert_equal,

assert_true,

)

from gitdb.test.lib import with_rw_directory

from git import (

Repo,

GitCommandError,

Diff,

DiffIndex

)

class TestDiff(TestBase):

def _assert_diff_format(self, diffs):

# verify that the format of the diff is sane

for diff in diffs:

if diff.a_mode:

assert isinstance(diff.a_mode, int)

if diff.b_mode:

assert isinstance(diff.b_mode, int)

if diff.a_blob:

assert not diff.a_blob.path.endswith('\n')

if diff.b_blob:

assert not diff.b_blob.path.endswith('\n')

# END for each diff

return diffs

@with_rw_directory

def test_diff_with_staged_file(self, rw_dir):

# SETUP INDEX WITH MULTIPLE STAGES

r = Repo.init(rw_dir)

fp = os.path.join(rw_dir, 'hello.txt')

with open(fp, 'w') as fs:

fs.write("hello world")

r.git.add(fp)

r.git.commit(message="init")

with open(fp, 'w') as fs:

fs.write("Hola Mundo")

r.git.commit(all=True, message="change on master")

r.git.checkout('HEAD~1', b='topic')

with open(fp, 'w') as fs:

fs.write("Hallo Welt")

r.git.commit(all=True, message="change on topic branch")

# there must be a merge-conflict

self.failUnlessRaises(GitCommandError, r.git.cherry_pick, 'master')

# Now do the actual testing - this should just work

assert len(r.index.diff(None)) == 2

assert len(r.index.diff(None, create_patch=True)) == 0, "This should work, but doesn't right now ... it's OK"

def test_list_from_string_new_mode(self):

output = StringProcessAdapter(fixture('diff_new_mode'))

diffs = Diff._index_from_patch_format(self.rorepo, output.stdout)

self._assert_diff_format(diffs)

assert_equal(1, len(diffs))

assert_equal(10, len(diffs[0].diff.splitlines()))

def test_diff_with_rename(self):

output = StringProcessAdapter(fixture('diff_rename'))

diffs = Diff._index_from_patch_format(self.rorepo, output.stdout)

self._assert_diff_format(diffs)

assert_equal(1, len(diffs))

diff = diffs[0]

assert_true(diff.renamed)

assert_equal(diff.rename_from, u'Jérôme')

assert_equal(diff.rename_to, u'müller')

assert isinstance(str(diff), str)

output = StringProcessAdapter(fixture('diff_rename_raw'))

diffs = Diff._index_from_raw_format(self.rorepo, output.stdout)

assert len(diffs) == 1

diff = diffs[0]

assert diff.renamed

assert diff.rename_from == 'this'

assert diff.rename_to == 'that'

assert len(list(diffs.iter_change_type('R'))) == 1

def test_binary_diff(self):

for method, file_name in ((Diff._index_from_patch_format, 'diff_patch_binary'),

(Diff._index_from_raw_format, 'diff_raw_binary')):

res = method(None, StringProcessAdapter(fixture(file_name)).stdout)

assert len(res) == 1

assert len(list(res.iter_change_type('M'))) == 1

if res[0].diff:

assert res[0].diff == b"Binary files a/rps and b/rps differ\n", "in patch mode, we get a diff text"

assert str(res[0]), "This call should just work"

# end for each method to test

def test_diff_index(self):

output = StringProcessAdapter(fixture('diff_index_patch'))

res = Diff._index_from_patch_format(None, output.stdout)

assert len(res) == 6

for dr in res:

assert dr.diff

assert str(dr), "Diff to string conversion should be possible"

# end for each diff

dr = res[3]

assert dr.diff.endswith(b"+Binary files a/rps and b/rps differ\n")

def test_diff_patch_format(self):

# test all of the 'old' format diffs for completness - it should at least

# be able to deal with it

fixtures = ("diff_2", "diff_2f", "diff_f", "diff_i", "diff_mode_only",

"diff_new_mode", "diff_numstat", "diff_p", "diff_rename",

"diff_tree_numstat_root")

for fixture_name in fixtures:

diff_proc = StringProcessAdapter(fixture(fixture_name))

Diff._index_from_patch_format(self.rorepo, diff_proc.stdout)

# END for each fixture

def test_diff_interface(self):

# test a few variations of the main diff routine

assertion_map = dict()

for i, commit in enumerate(self.rorepo.iter_commits('0.1.6', max_count=2)):

diff_item = commit

if i % 2 == 0:

diff_item = commit.tree

# END use tree every second item

for other in (None, commit.Index, commit.parents[0]):

for paths in (None, "CHANGES", ("CHANGES", "lib")):

for create_patch in range(2):

diff_index = diff_item.diff(other=other, paths=paths, create_patch=create_patch)

assert isinstance(diff_index, DiffIndex)

if diff_index:

self._assert_diff_format(diff_index)

for ct in DiffIndex.change_type:

key = 'ct_%s' % ct

assertion_map.setdefault(key, 0)

assertion_map[key] = assertion_map[key] + len(list(diff_index.iter_change_type(ct)))

# END for each changetype

# check entries

diff_set = set()

diff_set.add(diff_index[0])

assert len(diff_set) == 1

assert diff_index[0] == diff_index[0]

assert not (diff_index[0] != diff_index[0])

for dr in diff_index:

assert str(dr), "Diff to string conversion should be possible"

# END diff index checking

# END for each patch option

# END for each path option

# END for each other side

# END for each commit

# assert we could always find at least one instance of the members we

# can iterate in the diff index - if not this indicates its not working correctly

# or our test does not span the whole range of possibilities

for key, value in assertion_map.items():

assert value, "Did not find diff for %s" % key

# END for each iteration type

# test path not existing in the index - should be ignored

c = self.rorepo.head.commit

cp = c.parents[0]

diff_index = c.diff(cp, ["does/not/exist"])

assert len(diff_index) == 0

GitPython/git/test/test_diff.py at master · pelson/GitPython · GitHub

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