from unittest import TestCase from testfixtures import diff class TestDiff(TestCase): def test_example(self): actual = diff(''' line1 line2 line3 ''', ''' line1 line changed line3 ''') expected = '''\ --- first +++ second @@ -1,5 +1,5 @@ line1 - line2 + line changed line3 ''' self.assertEqual( [line.strip() for line in expected.split("\n")], [line.strip() for line in actual.split("\n")], '\n%r\n!=\n%r' % (expected, actual) ) def test_no_newlines(self): actual = diff('x', 'y') expected = '--- first\n+++ second\n@@ -1 +1 @@\n-x\n+y' self.assertEqual( expected, actual, '\n%r\n!=\n%r' % (expected, actual) )