38 lines
841 B
Dart
38 lines
841 B
Dart
|
import 'package:test/test.dart';
|
||
|
|
import 'package:platform_service_container/service_container.dart';
|
||
|
|
|
||
|
|
void main() {
|
||
|
|
group('RewindableGeneratorTest', () {
|
||
|
|
test('testCountUsesProvidedValue', () {
|
||
|
|
var generator = RewindableGenerator(() sync* {
|
||
|
|
yield 'foo';
|
||
|
|
}, 999);
|
||
|
|
|
||
|
|
expect(generator.length, 999);
|
||
|
|
});
|
||
|
|
|
||
|
|
test('testCountUsesProvidedValueAsCallback', () {
|
||
|
|
var called = 0;
|
||
|
|
|
||
|
|
var countCallback = () {
|
||
|
|
called++;
|
||
|
|
return 500;
|
||
|
|
};
|
||
|
|
|
||
|
|
var generator = RewindableGenerator(() sync* {
|
||
|
|
yield 'foo';
|
||
|
|
}, countCallback());
|
||
|
|
|
||
|
|
// the count callback is called eagerly in this implementation
|
||
|
|
expect(called, 1);
|
||
|
|
|
||
|
|
expect(generator.length, 500);
|
||
|
|
|
||
|
|
generator.length;
|
||
|
|
|
||
|
|
// the count callback is called only once
|
||
|
|
expect(called, 1);
|
||
|
|
});
|
||
|
|
});
|
||
|
|
}
|