| library petitparser.test.test_test; |
| |
| import 'package:test/test.dart'; |
| |
| import 'package:petitparser/petitparser.dart'; |
| import 'package:petitparser/test.dart'; |
| |
| void main() { |
| group('accept', () { |
| test('success', () { |
| var matcher = accept(char('a')); |
| var state = new Map(); |
| expect(matcher.matches('a', state), isTrue); |
| expect(state, isEmpty); |
| var description = new StringDescription(); |
| matcher.describe(description); |
| expect(description.toString(), '"Instance of \'CharacterParser\'["a" expected]" accepts input'); |
| }); |
| test('failure', () { |
| var matcher = accept(char('a')); |
| var state = new Map(); |
| expect(matcher.matches('b', state), isFalse); |
| expect(state, isNot(isEmpty)); |
| var description = new StringDescription(); |
| matcher.describeMismatch('b', description, state, false); |
| expect(description.toString(), '"Instance of \'CharacterParser\'["a" expected]" produces "Failure[1:1]: "a" expected" which is not accepted'); |
| }); |
| }); |
| group('parse', () { |
| test('success', () { |
| var matcher = parse(char('a'), 'a'); |
| var state = new Map(); |
| expect(matcher.matches('a', state), isTrue); |
| expect(state, isEmpty); |
| var description = new StringDescription(); |
| matcher.describe(description); |
| expect(description.toString(), '"Instance of \'CharacterParser\'["a" expected]" ' |
| 'accepts \'a\''); |
| }); |
| test('failure', () { |
| var matcher = parse(char('a'), 'a'); |
| var state = new Map(); |
| expect(matcher.matches('b', state), isFalse); |
| expect(state, isNot(isEmpty)); |
| var description = new StringDescription(); |
| matcher.describeMismatch('b', description, state, false); |
| expect(description.toString(), '"Instance of \'CharacterParser\'["a" expected]" ' |
| 'produces "Failure[1:1]: "a" expected" which is not accepted'); |
| }); |
| test('matcher', () { |
| var matcher = parse(char('a'), 'b'); |
| var state = new Map(); |
| expect(matcher.matches('a', state), isFalse); |
| expect(state, isNot(isEmpty)); |
| var description = new StringDescription(); |
| matcher.describeMismatch('a', description, state, false); |
| expect(description.toString(), '"Instance of \'CharacterParser\'["a" expected]" ' |
| 'produces "Success[1:2]: a" which parse result is different.\n' |
| 'Expected: b\n Actual: a\n ^\n Differ at offset 0'); |
| }); |
| test('position', () { |
| var matcher = parse(char('a'), 'a', 0); |
| var state = new Map(); |
| expect(matcher.matches('a', state), isFalse); |
| expect(state, isNot(isEmpty)); |
| var description = new StringDescription(); |
| matcher.describeMismatch('a', description, state, false); |
| expect(description.toString(), '"Instance of \'CharacterParser\'["a" expected]" ' |
| 'produces "Success[1:2]: a" that consumes input to 1 instead of 0'); |
| }); |
| }); |
| } |