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| 1 // Copyright (c) 2014, the Dart project authors. Please see the AUTHORS file |
| 2 // for details. All rights reserved. Use of this source code is governed by a |
| 3 // BSD-style license that can be found in the LICENSE file. |
| 4 |
| 5 library string_scanner.span_scanner_test; |
| 6 |
| 7 import 'package:string_scanner/string_scanner.dart'; |
| 8 import 'package:unittest/unittest.dart'; |
| 9 |
| 10 void main() { |
| 11 var scanner; |
| 12 setUp(() { |
| 13 scanner = new SpanScanner('foo\nbar\nbaz', 'source'); |
| 14 }); |
| 15 |
| 16 test("tracks the span for the last match", () { |
| 17 scanner.scan('fo'); |
| 18 scanner.scan('o\nba'); |
| 19 |
| 20 var span = scanner.lastSpan; |
| 21 expect(span.start.offset, equals(2)); |
| 22 expect(span.start.line, equals(0)); |
| 23 expect(span.start.column, equals(2)); |
| 24 expect(span.start.sourceUrl, equals('source')); |
| 25 |
| 26 expect(span.end.offset, equals(6)); |
| 27 expect(span.end.line, equals(1)); |
| 28 expect(span.end.column, equals(2)); |
| 29 expect(span.start.sourceUrl, equals('source')); |
| 30 |
| 31 expect(span.text, equals('o\nba')); |
| 32 }); |
| 33 |
| 34 test(".spanFrom() returns a span from a previous state", () { |
| 35 scanner.scan('fo'); |
| 36 var state = scanner.state; |
| 37 scanner.scan('o\nba'); |
| 38 scanner.scan('r\nba'); |
| 39 |
| 40 var span = scanner.spanFrom(state); |
| 41 expect(span.text, equals('o\nbar\nba')); |
| 42 }); |
| 43 |
| 44 test(".emptySpan returns an empty span at the current location", () { |
| 45 scanner.scan('foo\nba'); |
| 46 |
| 47 var span = scanner.emptySpan; |
| 48 expect(span.start.offset, equals(6)); |
| 49 expect(span.start.line, equals(1)); |
| 50 expect(span.start.column, equals(2)); |
| 51 expect(span.start.sourceUrl, equals('source')); |
| 52 |
| 53 expect(span.end.offset, equals(6)); |
| 54 expect(span.end.line, equals(1)); |
| 55 expect(span.end.column, equals(2)); |
| 56 expect(span.start.sourceUrl, equals('source')); |
| 57 |
| 58 expect(span.text, equals('')); |
| 59 }); |
| 60 } |
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