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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.expect_error_test; | |
6 | |
7 import 'package:string_scanner/string_scanner.dart'; | |
8 import 'package:unittest/unittest.dart'; | |
9 | |
10 import 'utils.dart'; | |
11 | |
12 void main() { | |
13 test('points to the first unconsumed character', () { | |
14 var scanner = new StringScanner('foo bar baz'); | |
15 scanner.expect('foo '); | |
16 expect(() => scanner.expect('foo'), throwsFormattedError(''' | |
17 Error on line 1, column 5: expected "foo". | |
18 foo bar baz | |
19 ^''')); | |
20 }); | |
21 | |
22 test('prints the correct line', () { | |
23 var scanner = new StringScanner('foo bar baz\ndo re mi\nearth fire water'); | |
24 scanner.expect('foo bar baz\ndo '); | |
25 expect(() => scanner.expect('foo'), throwsFormattedError(''' | |
26 Error on line 2, column 4: expected "foo". | |
27 do re mi | |
28 ^''')); | |
29 }); | |
30 | |
31 test('handles the beginning of the string correctly', () { | |
32 var scanner = new StringScanner('foo bar baz'); | |
33 expect(() => scanner.expect('zap'), throwsFormattedError(''' | |
34 Error on line 1, column 1: expected "zap". | |
35 foo bar baz | |
36 ^''')); | |
37 }); | |
38 | |
39 test('handles the end of the string correctly', () { | |
40 var scanner = new StringScanner('foo bar baz'); | |
41 scanner.expect('foo bar baz'); | |
42 expect(() => scanner.expect('bang'), throwsFormattedError(''' | |
43 Error on line 1, column 12: expected "bang". | |
44 foo bar baz | |
45 ^''')); | |
46 }); | |
47 | |
48 test('handles an empty string correctly', () { | |
49 expect(() => new StringScanner('').expect('foo'), throwsFormattedError(''' | |
50 Error on line 1, column 1: expected "foo". | |
51 | |
52 ^''')); | |
53 }); | |
54 | |
55 group("expected name", () { | |
56 test("uses the provided name", () { | |
57 expect(() => new StringScanner('').expect('foo bar', name: 'zap'), | |
58 throwsFormattedError(''' | |
59 Error on line 1, column 1: expected zap. | |
60 | |
61 ^''')); | |
62 }); | |
63 | |
64 test("escapes string quotes", () { | |
65 expect(() => new StringScanner('').expect('foo"bar'), | |
66 throwsFormattedError(''' | |
67 Error on line 1, column 1: expected "foo\\"bar". | |
68 | |
69 ^''')); | |
70 }); | |
71 | |
72 test("escapes string backslashes", () { | |
73 expect(() => new StringScanner('').expect('foo\\bar'), | |
74 throwsFormattedError(''' | |
75 Error on line 1, column 1: expected "foo\\\\bar". | |
76 | |
77 ^''')); | |
78 }); | |
79 | |
80 test("prints PERL-style regexps", () { | |
81 expect(() => new StringScanner('').expect(new RegExp(r'foo')), | |
82 throwsFormattedError(''' | |
83 Error on line 1, column 1: expected /foo/. | |
84 | |
85 ^''')); | |
86 }); | |
87 | |
88 test("escape regexp forward slashes", () { | |
89 expect(() => new StringScanner('').expect(new RegExp(r'foo/bar')), | |
90 throwsFormattedError(''' | |
91 Error on line 1, column 1: expected /foo\\/bar/. | |
92 | |
93 ^''')); | |
94 }); | |
95 | |
96 test("does not escape regexp backslashes", () { | |
97 expect(() => new StringScanner('').expect(new RegExp(r'foo\bar')), | |
98 throwsFormattedError(''' | |
99 Error on line 1, column 1: expected /foo\\bar/. | |
100 | |
101 ^''')); | |
102 }); | |
103 }); | |
104 } | |
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