diff --git a/Lib/test/string_tests.py b/Lib/test/string_tests.py index aab98c27e5c..473a2e77c66 100644 --- a/Lib/test/string_tests.py +++ b/Lib/test/string_tests.py @@ -376,6 +376,153 @@ class CommonTest(unittest.TestCase): self.checkraises(TypeError, 'hello', 'swapcase', 42) def test_replace(self): + EQ = self.checkequal + + # Operations on the empty string + EQ("", "", "replace", "", "") + EQ("A", "", "replace", "", "A") + EQ("", "", "replace", "A", "") + EQ("", "", "replace", "A", "A") + EQ("", "", "replace", "", "", 100) + EQ("", "", "replace", "", "", sys.maxint) + + # interleave (from=="", 'to' gets inserted everywhere) + EQ("A", "A", "replace", "", "") + EQ("*A*", "A", "replace", "", "*") + EQ("*1A*1", "A", "replace", "", "*1") + EQ("*-#A*-#", "A", "replace", "", "*-#") + EQ("*-A*-A*-", "AA", "replace", "", "*-") + EQ("*-A*-A*-", "AA", "replace", "", "*-", -1) + EQ("*-A*-A*-", "AA", "replace", "", "*-", sys.maxint) + EQ("*-A*-A*-", "AA", "replace", "", "*-", 4) + EQ("*-A*-A*-", "AA", "replace", "", "*-", 3) + EQ("*-A*-A", "AA", "replace", "", "*-", 2) + EQ("*-AA", "AA", "replace", "", "*-", 1) + EQ("AA", "AA", "replace", "", "*-", 0) + + # single character deletion (from=="A", to=="") + EQ("", "A", "replace", "A", "") + EQ("", "AAA", "replace", "A", "") + EQ("", "AAA", "replace", "A", "", -1) + EQ("", "AAA", "replace", "A", "", sys.maxint) + EQ("", "AAA", "replace", "A", "", 4) + EQ("", "AAA", "replace", "A", "", 3) + EQ("A", "AAA", "replace", "A", "", 2) + EQ("AA", "AAA", "replace", "A", "", 1) + EQ("AAA", "AAA", "replace", "A", "", 0) + EQ("", "AAAAAAAAAA", "replace", "A", "") + EQ("BCD", "ABACADA", "replace", "A", "") + EQ("BCD", "ABACADA", "replace", "A", "", -1) + EQ("BCD", "ABACADA", "replace", "A", "", sys.maxint) + EQ("BCD", "ABACADA", "replace", "A", "", 5) + EQ("BCD", "ABACADA", "replace", "A", "", 4) + EQ("BCDA", "ABACADA", "replace", "A", "", 3) + EQ("BCADA", "ABACADA", "replace", "A", "", 2) + EQ("BACADA", "ABACADA", "replace", "A", "", 1) + EQ("ABACADA", "ABACADA", "replace", "A", "", 0) + EQ("BCD", "ABCAD", "replace", "A", "") + EQ("BCD", "ABCADAA", "replace", "A", "") + EQ("BCD", "BCD", "replace", "A", "") + EQ("*************", "*************", "replace", "A", "") + EQ("^A^", "^"+"A"*1000+"^", "replace", "A", "", 999) + + # substring deletion (from=="the", to=="") + EQ("", "the", "replace", "the", "") + EQ("ater", "theater", "replace", "the", "") + EQ("", "thethe", "replace", "the", "") + EQ("", "thethethethe", "replace", "the", "") + EQ("aaaa", "theatheatheathea", "replace", "the", "") + EQ("that", "that", "replace", "the", "") + EQ("thaet", "thaet", "replace", "the", "") + EQ("here and re", "here and there", "replace", "the", "") + EQ("here and re and re", "here and there and there", + "replace", "the", "", sys.maxint) + EQ("here and re and re", "here and there and there", + "replace", "the", "", -1) + EQ("here and re and re", "here and there and there", + "replace", "the", "", 3) + EQ("here and re and re", "here and there and there", + "replace", "the", "", 2) + EQ("here and re and there", "here and there and there", + "replace", "the", "", 1) + EQ("here and there and there", "here and there and there", + "replace", "the", "", 0) + EQ("here and re and re", "here and there and there", "replace", "the", "") + + EQ("abc", "abc", "replace", "the", "") + EQ("abcdefg", "abcdefg", "replace", "the", "") + + # substring deletion (from=="bob", to=="") + EQ("bob", "bbobob", "replace", "bob", "") + EQ("bobXbob", "bbobobXbbobob", "replace", "bob", "") + EQ("aaaaaaa", "aaaaaaabob", "replace", "bob", "") + EQ("aaaaaaa", "aaaaaaa", "replace", "bob", "") + + # single character replace in place (len(from)==len(to)==1) + EQ("Who goes there?", "Who goes there?", "replace", "o", "o") + EQ("WhO gOes there?", "Who goes there?", "replace", "o", "O") + EQ("WhO gOes there?", "Who goes there?", "replace", "o", "O", sys.maxint) + EQ("WhO gOes there?", "Who goes there?", "replace", "o", "O", -1) + EQ("WhO gOes there?", "Who goes there?", "replace", "o", "O", 3) + EQ("WhO gOes there?", "Who goes there?", "replace", "o", "O", 2) + EQ("WhO goes there?", "Who goes there?", "replace", "o", "O", 1) + EQ("Who goes there?", "Who goes there?", "replace", "o", "O", 0) + + EQ("Who goes there?", "Who goes there?", "replace", "a", "q") + EQ("who goes there?", "Who goes there?", "replace", "W", "w") + EQ("wwho goes there?ww", "WWho goes there?WW", "replace", "W", "w") + EQ("Who goes there!", "Who goes there?", "replace", "?", "!") + EQ("Who goes there!!", "Who goes there??", "replace", "?", "!") + + EQ("Who goes there?", "Who goes there?", "replace", ".", "!") + + # substring replace in place (len(from)==len(to) > 1) + EQ("Th** ** a t**sue", "This is a tissue", "replace", "is", "**") + EQ("Th** ** a t**sue", "This is a tissue", "replace", "is", "**", sys.maxint) + EQ("Th** ** a t**sue", "This is a tissue", "replace", "is", "**", -1) + EQ("Th** ** a t**sue", "This is a tissue", "replace", "is", "**", 4) + EQ("Th** ** a t**sue", "This is a tissue", "replace", "is", "**", 3) + EQ("Th** ** a tissue", "This is a tissue", "replace", "is", "**", 2) + EQ("Th** is a tissue", "This is a tissue", "replace", "is", "**", 1) + EQ("This is a tissue", "This is a tissue", "replace", "is", "**", 0) + EQ("cobob", "bobob", "replace", "bob", "cob") + EQ("cobobXcobocob", "bobobXbobobob", "replace", "bob", "cob") + EQ("bobob", "bobob", "replace", "bot", "bot") + + # replace single character (len(from)==1, len(to)>1) + EQ("ReyKKjaviKK", "Reykjavik", "replace", "k", "KK") + EQ("ReyKKjaviKK", "Reykjavik", "replace", "k", "KK", -1) + EQ("ReyKKjaviKK", "Reykjavik", "replace", "k", "KK", sys.maxint) + EQ("ReyKKjaviKK", "Reykjavik", "replace", "k", "KK", 2) + EQ("ReyKKjavik", "Reykjavik", "replace", "k", "KK", 1) + EQ("Reykjavik", "Reykjavik", "replace", "k", "KK", 0) + EQ("A----B----C----", "A.B.C.", "replace", ".", "----") + + EQ("Reykjavik", "Reykjavik", "replace", "q", "KK") + + # replace substring (len(from)>1, len(to)!=len(from)) + EQ("ham, ham, eggs and ham", "spam, spam, eggs and spam", + "replace", "spam", "ham") + EQ("ham, ham, eggs and ham", "spam, spam, eggs and spam", + "replace", "spam", "ham", sys.maxint) + EQ("ham, ham, eggs and ham", "spam, spam, eggs and spam", + "replace", "spam", "ham", -1) + EQ("ham, ham, eggs and ham", "spam, spam, eggs and spam", + "replace", "spam", "ham", 4) + EQ("ham, ham, eggs and ham", "spam, spam, eggs and spam", + "replace", "spam", "ham", 3) + EQ("ham, ham, eggs and spam", "spam, spam, eggs and spam", + "replace", "spam", "ham", 2) + EQ("ham, spam, eggs and spam", "spam, spam, eggs and spam", + "replace", "spam", "ham", 1) + EQ("spam, spam, eggs and spam", "spam, spam, eggs and spam", + "replace", "spam", "ham", 0) + + EQ("bobob", "bobobob", "replace", "bobob", "bob") + EQ("bobobXbobob", "bobobobXbobobob", "replace", "bobob", "bob") + EQ("BOBOBOB", "BOBOBOB", "replace", "bob", "bobby") + + # self.checkequal('one@two!three!', 'one!two!three!', 'replace', '!', '@', 1) self.checkequal('onetwothree', 'one!two!three!', 'replace', '!', '') self.checkequal('one@two@three!', 'one!two!three!', 'replace', '!', '@', 2) @@ -403,6 +550,16 @@ class CommonTest(unittest.TestCase): self.checkraises(TypeError, 'hello', 'replace', 42, 'h') self.checkraises(TypeError, 'hello', 'replace', 'h', 42) +### Commented out until the underlying libraries are fixed +## def test_replace_overflow(self): +## # Check for overflow checking on 32 bit machines +## if sys.maxint != 2147483647: +## return +## A2_16 = "A" * (2**16) +## self.checkraises(OverflowError, A2_16, "replace", "", A2_16) +## self.checkraises(OverflowError, A2_16, "replace", "A", A2_16) +## self.checkraises(OverflowError, A2_16, "replace", "AA", A2_16+A2_16) + def test_zfill(self): self.checkequal('123', '123', 'zfill', 2) self.checkequal('123', '123', 'zfill', 3)