def test_string_is_term_width(self):
a = ''
b = 'a' * (term.width - 1)
d = diff(a, b)
expected_str = [
unchanged('{!s}('.format(type(a))),
'@@ {}{},{} {}{},{} @@'.format(
remove('-'), remove('0'), remove('0'),
insert('+'), insert('0'), insert('{}'.format(term.width - 1))),
' ' + ('{}'.format(insert('+')) * (term.width - 1)),
' ' + ('{}'.format(insert('a')) * (term.width - 1)),
unchanged(')')
]
self.assertEqual(d.__str__(), '\n'.join(expected_str))
def test_no_context_banner_for_non_sequence(self):
set1 = {1, 2}
set2 = {'a', 'b'}
diff_obj = diff(set1, set2)
expected_diff_items = [
'{} {}'.format(remove('-'), remove('1')),
'{} {}'.format(remove('-'), remove('2')),
'{} {}'.format(insert('+'), insert('a')),
'{} {}'.format(insert('+'), insert('b'))
]
# allow the expected output to be unordered
actual_string = diff_obj.context_blocks[0].__str__()
actual_items = actual_string.split('\n')
if sys.version_info.major >= 3:
self.assertCountEqual(expected_diff_items, actual_items)
else:
self.assertItemsEqual(expected_diff_items, actual_items)
def test_context_banner_is_correct_for_sequences(self):
'''
Context banners should contain the information you need the two original
sequences such that you only get the items contained within the
displayed context block.
'''
seq1 = [0, 1, 2, 3, 0]
seq2 = [0, 4, 2, 5, 0]
# the useful context for this diff is the slice 1:4 in both sequences
s1_start = s2_start = '1'
s1_end = s2_end = '4'
diff_obj = diff(seq1, seq2)
expected_banner = [
'@@ {}{},{} {}{},{} @@'.format(
remove('-'), remove(s1_start), remove(s1_end),
insert('+'), insert(s2_start), insert(s2_end))
]
expected_diff_items = [
'{} {}'.format(remove('-'), remove('1')),
'{} {}'.format(insert('+'), insert('4')),
'{} {}'.format(unchanged(' '), unchanged('2')),
'{} {}'.format(remove('-'), remove('3')),
'{} {}'.format(insert('+'), insert('5'))
]
expected_diff_output = '\n'.join(expected_banner + expected_diff_items)
# expected_diff_output is unicode type, convert to str for comparison
self.assertEqual(
diff_obj.context_blocks[0].__str__(), str(expected_diff_output))
def test_mapping_diff_item_str(self):
key = 'a'
val = [1, 2, 3]
di = MappingDiffItem(
unchanged, key, insert, val)
expected_str = (
unchanged('{!s}: '.format(key)) +
insert('{!s}'.format(val)))
self.assertEqual(di.__str__(), expected_str)
def test_only_context_blocks_are_displayed(self):
a = [1, 0, 0, 0, 0, 1]
b = [2, 0, 0, 0, 0, 2]
diff_obj = diff(a, b)
expected_diff_output = [
unchanged('{!s}('.format(type(a))),
'@@ {}{},{} {}{},{} @@'.format(
remove('-'), remove('0'), remove('1'),
insert('+'), insert('0'), insert('1')),
'{} {}'.format(remove('-'), remove('1')),
'{} {}'.format(insert('+'), insert('2')),
'@@ {}{},{} {}{},{} @@'.format(
remove('-'), remove('5'), remove('6'),
insert('+'), insert('5'), insert('6')),
'{} {}'.format(remove('-'), remove('1')),
'{} {}'.format(insert('+'), insert('2')),
unchanged(')')
]
self.assertEqual(diff_obj.__str__(), '\n'.join(expected_diff_output))
def test_strings_display_on_single_line(self):
a = 'this'
b = 'that'
d = diff(a, b)
expected_str = [
unchanged('{!s}('.format(type(a))),
'@@ {}{},{} {}{},{} @@'.format(
remove('-'), remove('2'), remove('4'),
insert('+'), insert('2'), insert('4')),
' {}{}{}{}'.format(
remove('-'), remove('-'), insert('+'), insert('+')),
' {}{}{}{}'.format(
remove('i'), remove('s'), insert('a'), insert('t')),
unchanged(')')
]
self.assertEqual(d.__str__(), '\n'.join(expected_str))
