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| 1 // Copyright (c) 2013, 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 polymer.test.refactor_test; |
| 6 |
| 7 import 'package:unittest/unittest.dart'; |
| 8 import 'package:source_maps/refactor.dart'; |
| 9 import 'package:source_maps/span.dart'; |
| 10 import 'package:source_maps/parser.dart' show parse, Mapping; |
| 11 |
| 12 main() { |
| 13 group('conflict detection', () { |
| 14 var original = "0123456789abcdefghij"; |
| 15 var file = new SourceFile.text('', original); |
| 16 |
| 17 test('no conflict, in order', () { |
| 18 var txn = new TextEditTransaction(original, file); |
| 19 txn.edit(2, 4, '.'); |
| 20 txn.edit(5, 5, '|'); |
| 21 txn.edit(6, 6, '-'); |
| 22 txn.edit(6, 7, '_'); |
| 23 expect((txn.commit()..build('')).text, "01.4|5-_789abcdefghij"); |
| 24 }); |
| 25 |
| 26 test('no conflict, out of order', () { |
| 27 var txn = new TextEditTransaction(original, file); |
| 28 txn.edit(2, 4, '.'); |
| 29 txn.edit(5, 5, '|'); |
| 30 |
| 31 // Regresion test for issue #404: there is no conflict/overlap for edits |
| 32 // that don't remove any of the original code. |
| 33 txn.edit(6, 7, '_'); |
| 34 txn.edit(6, 6, '-'); |
| 35 expect((txn.commit()..build('')).text, "01.4|5-_789abcdefghij"); |
| 36 |
| 37 }); |
| 38 |
| 39 test('conflict', () { |
| 40 var txn = new TextEditTransaction(original, file); |
| 41 txn.edit(2, 4, '.'); |
| 42 txn.edit(3, 3, '-'); |
| 43 expect(() => txn.commit(), throwsA(predicate( |
| 44 (e) => e.toString().contains('overlapping edits')))); |
| 45 }); |
| 46 }); |
| 47 |
| 48 test('generated source maps', () { |
| 49 var original = |
| 50 "0123456789\n0*23456789\n01*3456789\nabcdefghij\nabcd*fghij\n"; |
| 51 var file = new SourceFile.text('', original); |
| 52 var txn = new TextEditTransaction(original, file); |
| 53 txn.edit(27, 29, '__\n '); |
| 54 txn.edit(34, 35, '___'); |
| 55 var printer = (txn.commit()..build('')); |
| 56 var output = printer.text; |
| 57 var map = parse(printer.map); |
| 58 expect(output, |
| 59 "0123456789\n0*23456789\n01*34__\n 789\na___cdefghij\nabcd*fghij\n"); |
| 60 |
| 61 // Line 1 and 2 are unmodified: mapping any column returns the beginning |
| 62 // of the corresponding line: |
| 63 expect(_span(1, 1, map, file), ":1:1: \n0123456789"); |
| 64 expect(_span(1, 5, map, file), ":1:1: \n0123456789"); |
| 65 expect(_span(2, 1, map, file), ":2:1: \n0*23456789"); |
| 66 expect(_span(2, 8, map, file), ":2:1: \n0*23456789"); |
| 67 |
| 68 // Line 3 is modified part way: mappings before the edits have the right |
| 69 // mapping, after the edits the mapping is null. |
| 70 expect(_span(3, 1, map, file), ":3:1: \n01*3456789"); |
| 71 expect(_span(3, 5, map, file), ":3:1: \n01*3456789"); |
| 72 |
| 73 // Start of edits map to beginning of the edit secion: |
| 74 expect(_span(3, 6, map, file), ":3:6: \n01*3456789"); |
| 75 expect(_span(3, 7, map, file), ":3:6: \n01*3456789"); |
| 76 |
| 77 // Lines added have no mapping (they should inherit the last mapping), |
| 78 // but the end of the edit region continues were we left off: |
| 79 expect(_span(4, 1, map, file), isNull); |
| 80 expect(_span(4, 5, map, file), ":3:8: \n01*3456789"); |
| 81 |
| 82 // Subsequent lines are still mapped correctly: |
| 83 expect(_span(5, 1, map, file), ":4:1: \nabcdefghij"); // a (in a___cd...) |
| 84 expect(_span(5, 2, map, file), ":4:2: \nabcdefghij"); // _ (in a___cd...) |
| 85 expect(_span(5, 3, map, file), ":4:2: \nabcdefghij"); // _ (in a___cd...) |
| 86 expect(_span(5, 4, map, file), ":4:2: \nabcdefghij"); // _ (in a___cd...) |
| 87 expect(_span(5, 5, map, file), ":4:3: \nabcdefghij"); // c (in a___cd...) |
| 88 expect(_span(6, 1, map, file), ":5:1: \nabcd*fghij"); |
| 89 expect(_span(6, 8, map, file), ":5:1: \nabcd*fghij"); |
| 90 }); |
| 91 } |
| 92 |
| 93 String _span(int line, int column, Mapping map, SourceFile file) { |
| 94 var span = map.spanFor(line - 1, column - 1, files: {'': file}); |
| 95 return span == null ? null : span.getLocationMessage('').trim(); |
| 96 } |
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