Index: test/codegen/corelib/string_split_test.dart |
diff --git a/test/codegen/corelib/string_split_test.dart b/test/codegen/corelib/string_split_test.dart |
new file mode 100644 |
index 0000000000000000000000000000000000000000..3f63ed173964f370178fc45ff51c0aba61fba71b |
--- /dev/null |
+++ b/test/codegen/corelib/string_split_test.dart |
@@ -0,0 +1,136 @@ |
+// Copyright (c) 2011, the Dart project authors. Please see the AUTHORS file |
+// for details. All rights reserved. Use of this source code is governed by a |
+// BSD-style license that can be found in the LICENSE file. |
+ |
+import "package:expect/expect.dart"; |
+ |
+main() { |
+ testSplitString(); |
+ testSplitRegExp(); |
+ testSplitPattern(); |
+} |
+ |
+ |
+testSplit(List expect, String string, Pattern pattern) { |
+ String patternString; |
+ if (pattern is String) { |
+ patternString = '"$pattern"'; |
+ } else if (pattern is RegExp) { |
+ patternString = "/${pattern.pattern}/"; |
+ } else { |
+ patternString = pattern.toString(); |
+ } |
+ Expect.listEquals(expect, string.split(pattern), |
+ '"$string".split($patternString)'); |
+} |
+ |
+/** String patterns. */ |
+void testSplitString() { |
+ // Normal match. |
+ testSplit(["a", "b", "c"], "a b c", " "); |
+ testSplit(["a", "b", "c"], "adbdc", "d"); |
+ testSplit(["a", "b", "c"], "addbddc", "dd"); |
+ // No match. |
+ testSplit(["abc"], "abc", " "); |
+ testSplit(["a"], "a", "b"); |
+ testSplit([""], "", "b"); |
+ // Empty match matches everywhere except start/end. |
+ testSplit(["a", "b", "c"], "abc", ""); |
+ // All empty parts. |
+ testSplit(["", "", "", "", ""], "aaaa", "a"); |
+ testSplit(["", "", "", "", ""], " ", " "); |
+ testSplit(["", ""], "a", "a"); |
+ // No overlapping matches. Match as early as possible. |
+ testSplit(["", "", "", "a"], "aaaaaaa", "aa"); |
+ // Cannot split the empty string. |
+ testSplit([], "", ""); // Match. |
+ testSplit([""], "", "a"); // No match. |
+} |
+ |
+/** RegExp patterns. */ |
+void testSplitRegExp() { |
+ testSplitWithRegExp((s) => new RegExp(s)); |
+} |
+ |
+/** Non-String, non-RegExp patterns. */ |
+void testSplitPattern() { |
+ testSplitWithRegExp((s) => new RegExpWrap(s)); |
+} |
+ |
+void testSplitWithRegExp(makePattern) { |
+ testSplit(["a", "b", "c"], "a b c", makePattern(r" ")); |
+ |
+ testSplit(["a", "b", "c"], "adbdc", makePattern(r"[dz]")); |
+ |
+ testSplit(["a", "b", "c"], "addbddc", makePattern(r"dd")); |
+ |
+ testSplit(["abc"], "abc", makePattern(r"b$")); |
+ |
+ testSplit(["a", "b", "c"], "abc", makePattern(r"")); |
+ |
+ testSplit(["", "", "", ""], " ", makePattern(r"[ ]")); |
+ |
+ // Non-zero-length match at end. |
+ testSplit(["aa", ""], "aaa", makePattern(r"a$")); |
+ |
+ // Zero-length match at end. |
+ testSplit(["aaa"], "aaa", makePattern(r"$")); |
+ |
+ // Non-zero-length match at start. |
+ testSplit(["", "aa"], "aaa", makePattern(r"^a")); |
+ |
+ // Zero-length match at start. |
+ testSplit(["aaa"], "aaa", makePattern(r"^")); |
+ |
+ // Picks first match, not longest or shortest. |
+ testSplit(["", "", "", "a"], "aaaaaaa", makePattern(r"aa|aaa")); |
+ |
+ testSplit(["", "", "", "a"], "aaaaaaa", makePattern(r"aa|")); |
+ |
+ testSplit(["", "", "a"], "aaaaaaa", makePattern(r"aaa|aa")); |
+ |
+ // Zero-width match depending on the following. |
+ testSplit(["a", "bc"], "abc", makePattern(r"(?=[ab])")); |
+ |
+ testSplit(["a", "b", "c"], "abc", makePattern(r"(?!^)")); |
+ |
+ // Cannot split empty string. |
+ testSplit([], "", makePattern(r"")); |
+ |
+ testSplit([], "", makePattern(r"(?:)")); |
+ |
+ testSplit([], "", makePattern(r"$|(?=.)")); |
+ |
+ testSplit([""], "", makePattern(r"a")); |
+ |
+ // Can split singleton string if it matches. |
+ testSplit(["", ""], "a", makePattern(r"a")); |
+ |
+ testSplit(["a"], "a", makePattern(r"b")); |
+ |
+ // Do not include captures. |
+ testSplit(["a", "", "a"], "abba", makePattern(r"(b)")); |
+ |
+ testSplit(["a", "a"], "abba", makePattern(r"(bb)")); |
+ |
+ testSplit(["a", "a"], "abba", makePattern(r"(b*)")); |
+ |
+ testSplit(["a", "a"], "aa", makePattern(r"(b*)")); |
+ |
+ // But captures are still there, and do work with backreferences. |
+ testSplit(["a", "cba"], "abcba", makePattern(r"([bc])(?=.*\1)")); |
+} |
+ |
+// A Pattern implementation with the same capabilities as a RegExp, but not |
+// directly recognizable as a RegExp. |
+class RegExpWrap implements Pattern { |
+ final regexp; |
+ RegExpWrap(String source) : regexp = new RegExp(source); |
+ Iterable<Match> allMatches(String string, [int start = 0]) => |
+ regexp.allMatches(string, start); |
+ |
+ Match matchAsPrefix(String string, [int start = 0]) => |
+ regexp.matchAsPrefix(string, start); |
+ |
+ String toString() => "Wrap(/${regexp.pattern}/)"; |
+} |