lrn@google.com
ff1d105a0f
BUG= http://dartbug.com/12843 R=floitsch@google.com Review URL: https://codereview.chromium.org//36073010 git-svn-id: https://dart.googlecode.com/svn/branches/bleeding_edge/dart@29167 260f80e4-7a28-3924-810f-c04153c831b5
100 lines
2.9 KiB
Dart
100 lines
2.9 KiB
Dart
// Copyright (c) 2011, the Dart project authors. Please see the AUTHORS file
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// for details. All rights reserved. Use of this source code is governed by a
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// BSD-style license that can be found in the LICENSE file.
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// Dart test for testing String.allMatches.
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import "package:expect/expect.dart";
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String str = "this is a string with hello here and hello there";
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main() {
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testNoMatch();
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testOneMatch();
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testTwoMatches();
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testEmptyPattern();
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testEmptyString();
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testEmptyPatternAndString();
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testMatchAsPrefix();
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}
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testNoMatch() {
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// Also tests that RegExp groups don't work.
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String helloPattern = "with (hello)";
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Iterable<Match> matches = helloPattern.allMatches(str);
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Expect.isFalse(matches.iterator.moveNext());
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}
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testOneMatch() {
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String helloPattern = "with hello";
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Iterable<Match> matches = helloPattern.allMatches(str);
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var iterator = matches.iterator;
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Expect.isTrue(iterator.moveNext());
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Match match = iterator.current;
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Expect.isFalse(iterator.moveNext());
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Expect.equals(str.indexOf('with', 0), match.start);
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Expect.equals(str.indexOf('with', 0) + helloPattern.length, match.end);
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Expect.equals(helloPattern, match.pattern);
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Expect.equals(str, match.input);
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Expect.equals(helloPattern, match[0]);
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Expect.equals(0, match.groupCount);
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}
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testTwoMatches() {
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String helloPattern = "hello";
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Iterable<Match> matches = helloPattern.allMatches(str);
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int count = 0;
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int start = 0;
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for (var match in matches) {
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count++;
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Expect.equals(str.indexOf('hello', start), match.start);
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Expect.equals(
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str.indexOf('hello', start) + helloPattern.length, match.end);
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Expect.equals(helloPattern, match.pattern);
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Expect.equals(str, match.input);
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Expect.equals(helloPattern, match[0]);
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Expect.equals(0, match.groupCount);
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start = match.end;
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}
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Expect.equals(2, count);
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}
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testEmptyPattern() {
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String pattern = "";
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Iterable<Match> matches = pattern.allMatches(str);
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Expect.isTrue(matches.iterator.moveNext());
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}
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testEmptyString() {
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String pattern = "foo";
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String str = "";
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Iterable<Match> matches = pattern.allMatches(str);
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Expect.isFalse(matches.iterator.moveNext());
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}
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testEmptyPatternAndString() {
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String pattern = "";
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String str = "";
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Iterable<Match> matches = pattern.allMatches(str);
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Expect.isTrue(matches.iterator.moveNext());
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}
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testMatchAsPrefix() {
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String pattern = "an";
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String str = "banana";
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Expect.isNull(pattern.matchAsPrefix(str));
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Expect.isNull(pattern.matchAsPrefix(str, 0));
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var m = pattern.matchAsPrefix(str, 1);
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Expect.equals("an", m[0]);
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Expect.equals(1, m.start);
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Expect.isNull(pattern.matchAsPrefix(str, 2));
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m = pattern.matchAsPrefix(str, 3);
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Expect.equals("an", m[0]);
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Expect.equals(3, m.start);
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Expect.isNull(pattern.matchAsPrefix(str, 4));
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Expect.isNull(pattern.matchAsPrefix(str, 5));
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Expect.isNull(pattern.matchAsPrefix(str, 6));
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Expect.throws(() => pattern.matchAsPrefix(str, -1));
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Expect.throws(() => pattern.matchAsPrefix(str, 7));
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}
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