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