38 lines
889 B
Dart
38 lines
889 B
Dart
|
import 'package:test/test.dart';
|
||
|
|
import 'common.dart';
|
||
|
|
|
||
|
|
main() {
|
||
|
|
test('variables', () {
|
||
|
|
expect(r'$a', isVariable('a'));
|
||
|
|
expect(r'$abc', isVariable('abc'));
|
||
|
|
expect(r'$abc123', isVariable('abc123'));
|
||
|
|
expect(r'$_', isVariable('_'));
|
||
|
|
expect(r'$___', isVariable('___'));
|
||
|
|
expect(r'$_123', isVariable('_123'));
|
||
|
|
});
|
||
|
|
|
||
|
|
test('exceptions', () {
|
||
|
|
expect(() => parse(r'$').parseVariable(), throwsSyntaxError);
|
||
|
|
});
|
||
|
|
}
|
||
|
|
|
||
|
|
Matcher isVariable(String name) => new _IsVariable(name);
|
||
|
|
|
||
|
|
class _IsVariable extends Matcher {
|
||
|
|
final String name;
|
||
|
|
|
||
|
|
_IsVariable(this.name);
|
||
|
|
|
||
|
|
@override
|
||
|
|
Description describe(Description description) {
|
||
|
|
return description.add('parses as a variable named "$name"');
|
||
|
|
}
|
||
|
|
|
||
|
|
@override
|
||
|
|
bool matches(String item, Map matchState) {
|
||
|
|
var p = parse(item);
|
||
|
|
var v = p.parseVariable();
|
||
|
|
return equals(name).matches(v?.name, matchState);
|
||
|
|
}
|
||
|
|
}
|