public async Task WriteAsyncEnumerable_ElementSerializationThrows_ShouldDisposeEnumerator()
{
using var stream = new Utf8MemoryStream();
var asyncEnumerable = new MockedAsyncEnumerable <IEnumerable <int> >(Enumerable.Repeat(ThrowingEnumerable(), 2));
await Assert.ThrowsAsync <DivideByZeroException>(async() => await JsonSerializerWrapperForStream.SerializeWrapper(stream, new { Data = asyncEnumerable }));
Assert.Equal(1, asyncEnumerable.TotalCreatedEnumerators);
Assert.Equal(1, asyncEnumerable.TotalDisposedEnumerators);
public async Task WriteNestedAsyncEnumerable <TElement>(IEnumerable <TElement> source, int delayInterval, int bufferSize)
{
JsonSerializerOptions options = new JsonSerializerOptions
{
DefaultBufferSize = bufferSize
};
string expectedJson = await JsonSerializerWrapperForString.SerializeWrapper(new { Data = source });
using var stream = new Utf8MemoryStream();
var asyncEnumerable = new MockedAsyncEnumerable <TElement>(source, delayInterval);
await JsonSerializerWrapperForStream.SerializeWrapper(stream, new { Data = asyncEnumerable }, options);
JsonTestHelper.AssertJsonEqual(expectedJson, stream.ToString());
Assert.Equal(1, asyncEnumerable.TotalCreatedEnumerators);
Assert.Equal(1, asyncEnumerable.TotalDisposedEnumerators);
}
public async Task PreserveReferenceOfTypeObjectAsync()
{
var root = new ClassWithObjectProperty();
root.Child = new ClassWithObjectProperty();
root.Sibling = root.Child;
Assert.Same(root.Child, root.Sibling);
var stream = new MemoryStream();
await JsonSerializerWrapperForStream.SerializeWrapper(stream, root, s_serializerOptionsPreserve);
stream.Position = 0;
ClassWithObjectProperty rootCopy = await JsonSerializer.DeserializeAsync <ClassWithObjectProperty>(stream, s_serializerOptionsPreserve);
Assert.Same(rootCopy.Child, rootCopy.Sibling);
}
public async Task WriteAsyncEnumerableOfAsyncEnumerables <TElement>(IEnumerable <TElement> source, int delayInterval, int bufferSize)
{
JsonSerializerOptions options = new JsonSerializerOptions
{
DefaultBufferSize = bufferSize
};
const int OuterEnumerableCount = 5;
string expectedJson = await JsonSerializerWrapperForString.SerializeWrapper(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 JsonSerializerWrapperForStream.SerializeWrapper(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);
}
