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.diff(seq1, seq2)
expected_banner = [
'@@ {}{},{} {}{},{} @@'.format(
diff.remove('-'), diff.remove(s1_start), diff.remove(s1_end),
diff.insert('+'), diff.insert(s2_start), diff.insert(s2_end))
]
expected_diff_items = [
'{} {}'.format(diff.remove('-'), diff.remove('1')),
'{} {}'.format(diff.insert('+'), diff.insert('4')),
'{} {}'.format(diff.unchanged(' '), diff.unchanged('2')),
'{} {}'.format(diff.remove('-'), diff.remove('3')),
'{} {}'.format(diff.insert('+'), diff.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 = diff.MappingDiffItem(
diff.unchanged, key, diff.insert, val)
expected_str = (
diff.unchanged('{!s}: '.format(key)) +
diff.insert('{!s}'.format(val)))
self.assertEqual(di.__str__(), expected_str)