def test_from_unified_diff_multiple_additions_different_orderings(self):
source = ['A', 'B', 'C']
target = ['A', 'Y', 'Z', 'B', 'C']
diff = ['--- a/testfile',
'+++ b/testfile',
'@@ -1,3 +1,5 @@',
' A',
'+Y',
'+Z',
' B',
' C']
diff_string = '\n'.join(diff)
self.uut = Diff.from_unified_diff(diff_string, source)
self.assertEqual(self.uut.original, source)
self.assertEqual(self.uut.modified, target)
source = ['A', 'B', 'C']
target = ['A', 'Y', 'Z', 'C']
diff = ['--- a/testfile',
'+++ b/testfile',
'@@ -1,3 +1,5 @@',
' A',
'+Y',
'+Z',
'-B',
' C']
diff_string = '\n'.join(diff)
self.uut = Diff.from_unified_diff(diff_string, source)
self.assertEqual(self.uut.original, source)
self.assertEqual(self.uut.modified, target)
source = ['A', 'B', 'C']
target = ['Y', 'Z', 'C']
diff = ['--- a/testfile',
'+++ b/testfile',
'@@ -1,3 +1,5 @@',
'-A',
'+Y',
'+Z',
'-B',
' C']
diff_string = '\n'.join(diff)
self.uut = Diff.from_unified_diff(diff_string, source)
self.assertEqual(self.uut.original, source)
self.assertEqual(self.uut.modified, target)
source = ['A', 'B', 'C']
target = ['A', 'B', 'C', 'Y', 'Z']
diff = ['--- a/testfile',
'+++ b/testfile',
'@@ -3 +3,3 @@',
' C',
'+Y',
'+Z']
diff_string = '\n'.join(diff)
self.uut = Diff.from_unified_diff(diff_string, source)
self.assertEqual(self.uut.original, source)
self.assertEqual(self.uut.modified, target)
def process_output_unified_diff(self,
output,
filename,
file,
diff_severity=RESULT_SEVERITY.NORMAL,
result_message='Inconsistency found.',
diff_distance=1):
"""
Processes the executable's output as a unified diff.
:param output:
The output of the program as a string containing the
unified diff for correction.
:param filename:
The filename of the file currently being corrected.
:param file:
The contents of the file currently being corrected.
:param diff_severity:
The severity to use for generating results.
:param result_message:
The message-string to use for generating results.
:param diff_distance:
Number of unchanged lines that are allowed in between two
changed lines so they get yielded as one diff. If a negative
distance is given, every change will be yielded as an own diff,
even if they are right beneath each other.
:return:
An iterator returning results containing patches for the
file to correct.
"""
return self.process_diff(Diff.from_unified_diff(output, file),
filename,
diff_severity,
result_message,
diff_distance)
def test_from_unified_diff_no_changes_empty_diff(self):
source = ['first\n', 'second']
target = ['first\n', 'second']
diff_string = ''
self.uut = Diff.from_unified_diff(diff_string, source)
self.assertEqual(self.uut.original, source)
self.assertEqual(self.uut.modified, target)
def test_from_unified_diff_unmatched_context_line(self):
source = ['first', 'second']
diff = [
'--- a/testfile', '+++ b/testfile', '@@ -1,2 +1,2 @@',
' context_line_is_not_same', ' second'
]
diff_string = '\n'.join(diff)
error_message = ('Context lines do not match. '
'Line from unified diff: {!r}, '
'Original line #{!r}: {!r}')
with self.assertRaisesRegex(
RuntimeError,
error_message.format('context_line_is_not_same', 1, 'first')):
Diff.from_unified_diff(diff_string, source)
def process_output_unified_diff(self,
output,
filename,
file,
diff_severity=RESULT_SEVERITY.NORMAL,
result_message='Inconsistency found.',
diff_distance=1):
"""
Processes the executable's output as a unified diff.
:param output:
The output of the program as a string containing the
unified diff for correction.
:param filename:
The filename of the file currently being corrected.
:param file:
The contents of the file currently being corrected.
:param diff_severity:
The severity to use for generating results.
:param result_message:
The message-string to use for generating results.
:param diff_distance:
Number of unchanged lines that are allowed in between two
changed lines so they get yielded as one diff. If a negative
distance is given, every change will be yielded as an own diff,
even if they are right beneath each other.
:return:
An iterator returning results containing patches for the
file to correct.
"""
return self.process_diff(Diff.from_unified_diff(output, file),
filename,
diff_severity,
result_message,
diff_distance)
def test_from_unified_diff_no_changes_empty_diff(self):
source = ['first', 'second']
target = ['first', 'second']
diff_string = ''
self.uut = Diff.from_unified_diff(diff_string, source)
self.assertEqual(self.uut.original, source)
self.assertEqual(self.uut.modified, target)
def test_from_unified_diff_unmatched_line_to_delete(self):
source = ['first', 'second']
diff = [
'--- a/testfile', '+++ b/testfile', '@@ -1,2 +1,2 @@',
'-line_to_be_deleted_is_not_same', '+only_first_changed', ' second'
]
diff_string = '\n'.join(diff)
error_message = ('The line to delete does not match with '
'the line in the original file. '
'Line to delete: {!r}, '
'Original line #{!r}: {!r}')
with self.assertRaisesRegex(
RuntimeError,
error_message.format('line_to_be_deleted_is_not_same', 1,
'first')):
Diff.from_unified_diff(diff_string, source)
def test_from_unified_diff_invalid_line_type_character(self):
source = ['first', 'invalid starting character']
diff = [
'--- a/testfile', '+++ b/testfile', '@@ -1,2 +1,2 @@', ' first',
'*invalid_starting_character'
]
diff_string = '\n'.join(diff)
with self.assertRaises(UnidiffParseError):
self.uut = Diff.from_unified_diff(diff_string, source)
def test_from_unified_diff_invalid_hunk(self):
source = ['A', 'B', 'C', 'D', 'E', 'F', 'G']
diff = [
'--- a/testfile', '+++ b/testfile', '@@ -1,7 +1,5 @@', ' A', ' B',
'-C', '+Z', '@@ -6,2 +5,2 @@', ' F', '-G', '+K'
]
diff_string = '\n'.join(diff)
with self.assertRaises(UnidiffParseError):
self.uut = Diff.from_unified_diff(diff_string, source)
def test_from_unified_diff_multiple_additions_different_orderings(self):
source = ['A\n', 'B\n', 'C']
target = ['A\n', 'Y\n', 'Z\n', 'B\n', 'C']
diff = [
'--- a/testfile', '+++ b/testfile', '@@ -1,3 +1,5 @@', ' A', '+Y',
'+Z', ' B', ' C'
]
diff_string = '\n'.join(diff)
self.uut = Diff.from_unified_diff(diff_string, source)
self.assertEqual(self.uut.original, source)
self.assertEqual(self.uut.modified, target)
source = ['A\n', 'B\n', 'C']
target = ['A\n', 'Y\n', 'Z\n', 'C']
diff = [
'--- a/testfile', '+++ b/testfile', '@@ -1,3 +1,4 @@', ' A', '+Y',
'+Z', '-B', ' C'
]
diff_string = '\n'.join(diff)
self.uut = Diff.from_unified_diff(diff_string, source)
self.assertEqual(self.uut.original, source)
self.assertEqual(self.uut.modified, target)
source = ['A\n', 'B\n', 'C']
target = ['Y\n', 'Z\n', 'C']
diff = [
'--- a/testfile', '+++ b/testfile', '@@ -1,3 +1,3 @@', '-A', '+Y',
'+Z', '-B', ' C'
]
diff_string = '\n'.join(diff)
self.uut = Diff.from_unified_diff(diff_string, source)
self.assertEqual(self.uut.original, source)
self.assertEqual(self.uut.modified, target)
source = ['A\n', 'B\n', 'C']
target = ['A\n', 'B\n', 'C\n', 'Y\n', 'Z']
diff = [
'--- a/testfile', '+++ b/testfile', '@@ -3 +3,3 @@', ' C', '+Y',
'+Z'
]
diff_string = '\n'.join(diff)
self.uut = Diff.from_unified_diff(diff_string, source)
self.assertEqual(self.uut.original, source)
self.assertEqual(self.uut.modified, target)
def test_from_unified_diff_invalid_line_type_character(self):
source = ['first', 'invalid starting character']
diff = ['--- a/testfile',
'+++ b/testfile',
'@@ -1,2 +1,2 @@',
' first',
'*invalid_starting_character']
diff_string = '\n'.join(diff)
with self.assertRaises(UnidiffParseError):
self.uut = Diff.from_unified_diff(diff_string, source)
def test_process_output_unified_diff_incomplete_hunk(self):
uut = (linter(sys.executable, output_format='unified-diff')
(self.EmptyTestLinter)
(self.section, None))
original = ['void main() {',
'// This comment is missing',
'// in the unified diff',
'return 09;',
'}']
diff = ['--- a/some-file.c',
'+++ b/some-file.c',
'@@ -1,1 +1,2 @@',
'-void main() {',
'+void main()',
'+{',
'@@ -4,2 +5,2 @@',
'-return 09;',
'+ return 9;',
' }']
diff_string = '\n'.join(diff)
results = list(uut.process_output(diff_string,
'some-file.c',
original))
diffs = list(Diff.from_unified_diff(diff_string, original).split_diff())
expected = [Result.from_values(uut,
'Inconsistency found.',
'some-file.c',
1, None, 1, None,
RESULT_SEVERITY.NORMAL,
diffs={'some-file.c': diffs[0]}),
Result.from_values(uut,
'Inconsistency found.',
'some-file.c',
4, None, 4, None,
RESULT_SEVERITY.NORMAL,
diffs={'some-file.c': diffs[1]})]
self.assertEqual(results, expected)
uut = (linter(sys.executable,
output_format='unified-diff',
diff_distance=-1)
(self.EmptyTestLinter)
(self.section, None))
results = list(uut.process_output(diff_string,
'some-file.c',
original))
self.assertEqual(len(results), 2)
def test_from_unified_diff_unmatched_context_line(self):
source = ['first', 'second']
diff = ['--- a/testfile',
'+++ b/testfile',
'@@ -1,2 +1,2 @@',
' context_line_is_not_same',
' second']
diff_string = '\n'.join(diff)
error_message = ('Context lines do not match. '
'Line from unified diff: {!r}, '
'Original line #{!r}: {!r}')
with self.assertRaisesRegex(
RuntimeError,
error_message.format(
'context_line_is_not_same',
1,
'first')):
Diff.from_unified_diff(diff_string, source)
def test_from_unified_diff_incomplete_hunks_multiple_additions(self):
source = ['A', 'C', 'D', 'E', 'G']
target = ['A', 'B', 'C', 'D', 'E', 'F', 'G']
diff = [
'--- a/testfile', '+++ b/testfile', '@@ -1,1 +1,2 @@', ' A', '+B',
'@@ -4,2 +5,3 @@', ' E', '+F', ' G'
]
diff_string = '\n'.join(diff)
self.uut = Diff.from_unified_diff(diff_string, source)
self.assertEqual(self.uut.original, source)
self.assertEqual(self.uut.modified, target)
def test_process_output_unified_diff_incomplete_hunk(self):
uut = (linter(sys.executable, output_format='unified-diff')(
self.EmptyTestLinter)(self.section, None))
original = [
'void main() {', '// This comment is missing',
'// in the unified diff', 'return 09;', '}'
]
diff = [
'--- a/some-file.c', '+++ b/some-file.c', '@@ -1,1 +1,2 @@',
'-void main() {', '+void main()', '+{', '@@ -4,2 +5,2 @@',
'-return 09;', '+ return 9;', ' }'
]
diff_string = '\n'.join(diff)
results = list(uut.process_output(diff_string, 'some-file.c',
original))
diffs = list(
Diff.from_unified_diff(diff_string, original).split_diff())
expected = [
Result.from_values(uut,
'Inconsistency found.',
'some-file.c',
1,
None,
1,
None,
RESULT_SEVERITY.NORMAL,
diffs={'some-file.c': diffs[0]}),
Result.from_values(uut,
'Inconsistency found.',
'some-file.c',
4,
None,
4,
None,
RESULT_SEVERITY.NORMAL,
diffs={'some-file.c': diffs[1]})
]
self.assertEqual(results, expected)
uut = (linter(sys.executable,
output_format='unified-diff',
diff_distance=-1)(self.EmptyTestLinter)(self.section,
None))
results = list(uut.process_output(diff_string, 'some-file.c',
original))
self.assertEqual(len(results), 2)
def test_from_unified_diff_no_changes(self):
source = ['first\n', 'second']
target = ['first\n', 'second']
diff = [
'--- a/testfile', '+++ b/testfile', '@@ -1,2 +1,2 @@', ' first',
' second'
]
diff_string = '\n'.join(diff)
self.uut = Diff.from_unified_diff(diff_string, source)
self.assertEqual(self.uut.original, source)
self.assertEqual(self.uut.modified, target)
def test_from_unified_diff_incomplete_hunks_multiple_modifications(self):
source = ['A\n', 'B\n', 'C\n', 'D\n', 'E\n', 'F\n', 'G']
target = ['A\n', 'B\n', 'Z\n', 'D\n', 'E\n', 'F\n', 'K']
diff = [
'--- a/testfile', '+++ b/testfile', '@@ -1,3 +1,3 @@', ' A', ' B',
'-C', '+Z', '@@ -6,2 +5,2 @@', ' F', '-G', '+K'
]
diff_string = '\n'.join(diff)
self.uut = Diff.from_unified_diff(diff_string, source)
self.assertEqual(self.uut.original, source)
self.assertEqual(self.uut.modified, target)
def test_from_unified_diff_single_addition(self):
source = ['single line']
target = ['single line\n', 'another line added']
diff = [
'--- a/testfile', '+++ b/testfile', '@@ -1 +1,2 @@',
' single line', '+another line added'
]
diff_string = '\n'.join(diff)
self.uut = Diff.from_unified_diff(diff_string, source)
self.assertEqual(self.uut.original, source)
self.assertEqual(self.uut.modified, target)
def test_from_unified_diff_multiple_hunks(self):
source = ['A\n', 'B\n', 'C\n', 'D\n', 'E\n', 'F\n', 'G']
target = ['A\n', 'C\n', 'D\n', 'E\n', 'F\n']
diff = [
'--- a/testfile', '+++ b/testfile', '@@ -1,2 +1,1 @@', ' A', '-B',
'@@ -3,5 +2,4 @@', ' C', ' D', ' E', ' F', '-G'
]
diff_string = '\n'.join(diff)
self.uut = Diff.from_unified_diff(diff_string, source)
self.assertEqual(self.uut.original, source)
self.assertEqual(self.uut.modified, target)
def test_from_unified_diff_single_deletion(self):
source = ['two lines\n', 'to be removed']
target = ['two lines\n']
diff = [
'--- a/testfile', '+++ b/testfile', '@@ -1,2 +1 @@', ' two lines',
'-to be removed'
]
diff_string = '\n'.join(diff)
self.uut = Diff.from_unified_diff(diff_string, source)
self.assertEqual(self.uut.original, source)
self.assertEqual(self.uut.modified, target)
def test_from_unified_diff_single_addition(self):
source = ['single line']
target = ['single line', 'another line added']
diff = ['--- a/testfile',
'+++ b/testfile',
'@@ -1 +1,2 @@',
' single line',
'+another line added']
diff_string = '\n'.join(diff)
self.uut = Diff.from_unified_diff(diff_string, source)
self.assertEqual(self.uut.original, source)
self.assertEqual(self.uut.modified, target)
def test_from_unified_diff_single_deletion(self):
source = ['two lines', 'to be removed']
target = ['two lines']
diff = ['--- a/testfile',
'+++ b/testfile',
'@@ -1,2 +1 @@',
' two lines',
'-to be removed']
diff_string = '\n'.join(diff)
self.uut = Diff.from_unified_diff(diff_string, source)
self.assertEqual(self.uut.original, source)
self.assertEqual(self.uut.modified, target)
def test_from_unified_diff_no_changes(self):
source = ['first', 'second']
target = ['first', 'second']
diff = ['--- a/testfile',
'+++ b/testfile',
'@@ -1,2 +1,2 @@',
' first',
' second']
diff_string = '\n'.join(diff)
self.uut = Diff.from_unified_diff(diff_string, source)
self.assertEqual(self.uut.original, source)
self.assertEqual(self.uut.modified, target)
def test_from_unified_diffrent_beginning_line_types(self):
source = ['A\n', 'B\n', 'C']
target = ['A\n', 'Y\n', 'B\n', 'C']
diff = ['--- a/testfile',
'+++ b/testfile',
'@@ -1,3 +1,4 @@',
' A',
'+Y',
' B',
' C']
diff_string = '\n'.join(diff)
self.uut = Diff.from_unified_diff(diff_string, source)
self.assertEqual(self.uut.original, source)
self.assertEqual(self.uut.modified, target)
source = ['A\n', 'B\n', 'C']
target = ['B\n', 'C']
diff = ['--- a/testfile',
'+++ b/testfile',
'@@ -1,3 +1,2 @@',
'-A',
' B',
' C']
diff_string = '\n'.join(diff)
self.uut = Diff.from_unified_diff(diff_string, source)
self.assertEqual(self.uut.original, source)
self.assertEqual(self.uut.modified, target)
source = ['A\n', 'B\n', 'C']
target = ['Z\n', 'A\n', 'B\n', 'C']
diff = ['--- a/testfile',
'+++ b/testfile',
'@@ -1,2 +1,3 @@',
'+Z',
' A',
' B']
diff_string = '\n'.join(diff)
self.uut = Diff.from_unified_diff(diff_string, source)
self.assertEqual(self.uut.original, source)
self.assertEqual(self.uut.modified, target)
def test_from_unified_diffrent_beginning_line_types(self):
source = ['A', 'B', 'C']
target = ['A', 'Y', 'B', 'C']
diff = ['--- a/testfile',
'+++ b/testfile',
'@@ -1,3 +1,4 @@',
' A',
'+Y',
' B',
' C']
diff_string = '\n'.join(diff)
self.uut = Diff.from_unified_diff(diff_string, source)
self.assertEqual(self.uut.original, source)
self.assertEqual(self.uut.modified, target)
source = ['A', 'B', 'C']
target = ['B', 'C']
diff = ['--- a/testfile',
'+++ b/testfile',
'@@ -1,3 +1,2 @@',
'-A',
' B',
' C']
diff_string = '\n'.join(diff)
self.uut = Diff.from_unified_diff(diff_string, source)
self.assertEqual(self.uut.original, source)
self.assertEqual(self.uut.modified, target)
source = ['A', 'B', 'C']
target = ['Z', 'A', 'B', 'C']
diff = ['--- a/testfile',
'+++ b/testfile',
'@@ -1,2 +1,3 @@',
'+Z',
' A',
' B']
diff_string = '\n'.join(diff)
self.uut = Diff.from_unified_diff(diff_string, source)
self.assertEqual(self.uut.original, source)
self.assertEqual(self.uut.modified, target)
def test_from_unified_diff_single_modification(self):
source = ['first\n', 'second']
target = ['only_first_changed\n', 'second']
diff = ['--- a/testfile',
'+++ b/testfile',
'@@ -1,2 +1,2 @@',
'-first',
'+only_first_changed',
' second']
diff_string = '\n'.join(diff)
self.uut = Diff.from_unified_diff(diff_string, source)
self.assertEqual(self.uut.original, source)
self.assertEqual(self.uut.modified, target)
def test_from_unified_diff_unmatched_line_to_delete(self):
source = ['first', 'second']
diff = ['--- a/testfile',
'+++ b/testfile',
'@@ -1,2 +1,2 @@',
'-line_to_be_deleted_is_not_same',
'+only_first_changed',
' second']
diff_string = '\n'.join(diff)
error_message = ('The line to delete does not match with '
'the line in the original file. '
'Line to delete: {!r}, '
'Original line #{!r}: {!r}')
with self.assertRaisesRegex(
RuntimeError,
error_message.format(
'line_to_be_deleted_is_not_same',
1,
'first')):
Diff.from_unified_diff(diff_string, source)
def test_from_unified_diff_incomplete_hunks_multiple_additions(self):
source = ['A', 'C', 'D', 'E', 'G']
target = ['A', 'B', 'C', 'D', 'E', 'F', 'G']
diff = ['--- a/testfile',
'+++ b/testfile',
'@@ -1,1 +1,2 @@',
' A',
'+B',
'@@ -4,2 +5,3 @@',
' E',
'+F',
' G']
diff_string = '\n'.join(diff)
self.uut = Diff.from_unified_diff(diff_string, source)
self.assertEqual(self.uut.original, source)
self.assertEqual(self.uut.modified, target)
def test_from_unified_diff_invalid_hunk(self):
source = ['A', 'B', 'C', 'D', 'E', 'F', 'G']
diff = ['--- a/testfile',
'+++ b/testfile',
'@@ -1,7 +1,5 @@',
' A',
' B',
'-C',
'+Z',
'@@ -6,2 +5,2 @@',
' F',
'-G',
'+K']
diff_string = '\n'.join(diff)
with self.assertRaises(UnidiffParseError):
self.uut = Diff.from_unified_diff(diff_string, source)
def test_from_unified_diff_incomplete_hunks_multiple_deletions(self):
source = ['A\n', 'B\n', 'C\n', 'D\n', 'E\n', 'F\n', 'G']
target = ['A\n', 'C\n', 'D\n', 'E\n', 'F\n']
diff = ['--- a/testfile',
'+++ b/testfile',
'@@ -1,2 +1,1 @@',
' A',
'-B',
'@@ -5,3 +4,2 @@',
' E',
' F',
'-G']
diff_string = '\n'.join(diff)
self.uut = Diff.from_unified_diff(diff_string, source)
self.assertEqual(self.uut.original, source)
self.assertEqual(self.uut.modified, target)
def test_from_unified_diff_multiple_hunks(self):
source = ['A', 'B', 'C', 'D', 'E', 'F', 'G']
target = ['A', 'C', 'D', 'E', 'F']
diff = ['--- a/testfile',
'+++ b/testfile',
'@@ -1,2 +1,1 @@',
' A',
'-B',
'@@ -3,5 +2,4 @@',
' C',
' D',
' E',
' F',
'-G']
diff_string = '\n'.join(diff)
self.uut = Diff.from_unified_diff(diff_string, source)
self.assertEqual(self.uut.original, source)
self.assertEqual(self.uut.modified, target)
