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b998b10f3e
Change-Id: I3a31632ce28fb87a410b759d092c7ebc9393574d Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/128306 Commit-Queue: Bob Nystrom <rnystrom@google.com> Auto-Submit: Bob Nystrom <rnystrom@google.com> Reviewed-by: Lasse R.H. Nielsen <lrn@google.com>
112 lines
3.4 KiB
Dart
112 lines
3.4 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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testAllMatchesStart();
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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(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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testAllMatchesStart() {
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String p = "ass";
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String s = "assassin";
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Expect.equals(2, p.allMatches(s).length);
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Expect.equals(2, p.allMatches(s, 0).length);
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Expect.equals(1, p.allMatches(s, 1).length);
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Expect.equals(0, p.allMatches(s, 4).length);
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Expect.equals(0, p.allMatches(s, s.length).length);
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Expect.throws(() => p.allMatches(s, -1));
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Expect.throws(() => p.allMatches(s, s.length + 1));
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}
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