public static async Task WriteNestedAsyncEnumerable <TElement>(IEnumerable <TElement> source, int delayInterval, int bufferSize) { JsonSerializerOptions options = new JsonSerializerOptions { DefaultBufferSize = bufferSize }; string expectedJson = JsonSerializer.Serialize(new { Data = source }); using var stream = new Utf8MemoryStream(); var asyncEnumerable = new MockedAsyncEnumerable <TElement>(source, delayInterval); await JsonSerializer.SerializeAsync(stream, new { Data = asyncEnumerable }, options); JsonTestHelper.AssertJsonEqual(expectedJson, stream.ToString()); Assert.Equal(1, asyncEnumerable.TotalCreatedEnumerators); Assert.Equal(1, asyncEnumerable.TotalDisposedEnumerators); }
public static async Task WriteAsyncEnumerableOfAsyncEnumerables <TElement>(IEnumerable <TElement> source, int delayInterval, int bufferSize) { JsonSerializerOptions options = new JsonSerializerOptions { DefaultBufferSize = bufferSize }; const int OuterEnumerableCount = 5; string expectedJson = JsonSerializer.Serialize(Enumerable.Repeat(source, OuterEnumerableCount)); var innerAsyncEnumerable = new MockedAsyncEnumerable <TElement>(source, delayInterval); var outerAsyncEnumerable = new MockedAsyncEnumerable <IAsyncEnumerable <TElement> >( Enumerable.Repeat(innerAsyncEnumerable, OuterEnumerableCount), delayInterval); using var stream = new Utf8MemoryStream(); await JsonSerializer.SerializeAsync(stream, outerAsyncEnumerable, options); JsonTestHelper.AssertJsonEqual(expectedJson, stream.ToString()); Assert.Equal(1, outerAsyncEnumerable.TotalCreatedEnumerators); Assert.Equal(1, outerAsyncEnumerable.TotalDisposedEnumerators); Assert.Equal(OuterEnumerableCount, innerAsyncEnumerable.TotalCreatedEnumerators); Assert.Equal(OuterEnumerableCount, innerAsyncEnumerable.TotalDisposedEnumerators); }