platform/test/argument_test.dart

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2017-07-03 23:03:36 +00:00
import 'package:graphql_parser/graphql_parser.dart';
import 'package:matcher/matcher.dart';
import 'package:test/test.dart';
import 'common.dart';
main() {
test('argument', () {
expect('foo: 2', isArgument('foo', 2));
expect(r'foo: $bar', isArgument('foo', 'bar'));
});
test('exception', () {
expect(() => parseArgument('foo'), throwsSyntaxError);
expect(() => parseArgument('foo:'), throwsSyntaxError);
});
}
ArgumentContext parseArgument(String text) => parse(text).parseArgument();
Matcher isArgument(String name, value) => new _IsArgument(name, value);
class _IsArgument extends Matcher {
final String name;
final value;
_IsArgument(this.name, this.value);
@override
Description describe(Description description) {
return description.add('is an argument named "$name" with value $value');
}
@override
bool matches(item, Map matchState) {
var arg = item is ArgumentContext ? item : parseArgument(item);
if (arg == null) return false;
return equals(name).matches(arg.name, matchState) &&
equals(value).matches(
arg.valueOrVariable.value?.value ??
arg.valueOrVariable.variable?.name,
matchState);
}
}