public async Task MvcJsonOptionsAreUsedToSetBufferThreshold()
{
// Arrange
var person = new User()
{
FullName = "John", age = 35
};
Stream writeStream = null;
var outputFormatterContext = GetOutputFormatterContext(person, typeof(User), writerFactory: (stream, encoding) =>
{
writeStream = stream;
return(StreamWriter.Null);
});
var settings = new JsonSerializerSettings
{
ContractResolver = new CamelCasePropertyNamesContractResolver(),
Formatting = Formatting.Indented,
};
var expectedOutput = JsonConvert.SerializeObject(person, settings);
var jsonFormatter = new NewtonsoftJsonOutputFormatter(settings, ArrayPool <char> .Shared, new MvcOptions(), new MvcNewtonsoftJsonOptions()
{
OutputFormatterMemoryBufferThreshold = 2
});
// Act
await jsonFormatter.WriteResponseBodyAsync(outputFormatterContext, Encoding.UTF8);
// Assert
Assert.IsType <FileBufferingWriteStream>(writeStream);
Assert.Equal(2, ((FileBufferingWriteStream)writeStream).MemoryThreshold);
}
public async Task WriteToStreamAsync_LargePayload_DoesNotPerformSynchronousWrites()
{
// Arrange
var model = Enumerable.Range(0, 1000).Select(p => new User {
FullName = new string('a', 5000)
});
var stream = new Mock <Stream> {
CallBase = true
};
stream.Setup(v => v.WriteAsync(It.IsAny <byte[]>(), It.IsAny <int>(), It.IsAny <int>(), It.IsAny <CancellationToken>()))
.Returns(Task.CompletedTask);
stream.Setup(v => v.FlushAsync(It.IsAny <CancellationToken>())).Returns(Task.CompletedTask);
stream.SetupGet(s => s.CanWrite).Returns(true);
var formatter = new NewtonsoftJsonOutputFormatter(new JsonSerializerSettings(), ArrayPool <char> .Shared, new MvcOptions(), new MvcNewtonsoftJsonOptions());
var outputFormatterContext = GetOutputFormatterContext(
model,
typeof(string),
"application/json; charset=utf-8",
stream.Object);
// Act
await formatter.WriteResponseBodyAsync(outputFormatterContext, Encoding.UTF8);
// Assert
stream.Verify(v => v.WriteAsync(It.IsAny <byte[]>(), It.IsAny <int>(), It.IsAny <int>(), It.IsAny <CancellationToken>()), Times.AtLeastOnce());
stream.Verify(v => v.Write(It.IsAny <byte[]>(), It.IsAny <int>(), It.IsAny <int>()), Times.Never());
stream.Verify(v => v.Flush(), Times.Never());
Assert.NotNull(outputFormatterContext.HttpContext.Response.ContentLength);
}
public async Task ChangesTo_SerializerSettings_AffectSerialization()
{
// Arrange
var person = new User()
{
FullName = "John", age = 35
};
var outputFormatterContext = GetOutputFormatterContext(person, typeof(User));
var settings = new JsonSerializerSettings
{
ContractResolver = new CamelCasePropertyNamesContractResolver(),
Formatting = Formatting.Indented,
};
var expectedOutput = JsonConvert.SerializeObject(person, settings);
var jsonFormatter = new NewtonsoftJsonOutputFormatter(settings, ArrayPool <char> .Shared, new MvcOptions(), new MvcNewtonsoftJsonOptions());
// Act
await jsonFormatter.WriteResponseBodyAsync(outputFormatterContext, Encoding.UTF8);
// Assert
var body = outputFormatterContext.HttpContext.Response.Body;
Assert.NotNull(body);
body.Position = 0;
var content = new StreamReader(body, Encoding.UTF8).ReadToEnd();
Assert.Equal(expectedOutput, content);
}
public async Task MvcJsonOptionsAreUsedToSetBufferThresholdFromServices()
{
// Arrange
var person = new User()
{
FullName = "John", age = 35
};
Stream writeStream = null;
var outputFormatterContext = GetOutputFormatterContext(person, typeof(User), writerFactory: (stream, encoding) =>
{
writeStream = stream;
return(StreamWriter.Null);
});
var services = new ServiceCollection()
.AddOptions()
.Configure <MvcNewtonsoftJsonOptions>(o =>
{
o.OutputFormatterMemoryBufferThreshold = 1;
})
.BuildServiceProvider();
outputFormatterContext.HttpContext.RequestServices = services;
var settings = new JsonSerializerSettings
{
ContractResolver = new CamelCasePropertyNamesContractResolver(),
Formatting = Formatting.Indented,
};
var expectedOutput = JsonConvert.SerializeObject(person, settings);
#pragma warning disable CS0618 // Type or member is obsolete
var jsonFormatter = new NewtonsoftJsonOutputFormatter(settings, ArrayPool <char> .Shared, new MvcOptions());
#pragma warning restore CS0618 // Type or member is obsolete
// Act
await jsonFormatter.WriteResponseBodyAsync(outputFormatterContext, Encoding.UTF8);
// Assert
Assert.IsType <FileBufferingWriteStream>(writeStream);
Assert.Equal(1, ((FileBufferingWriteStream)writeStream).MemoryThreshold);
}
public async Task WriteToStreamAsync_RoundTripsJToken()
{
// Arrange
var beforeMessage = "Hello World";
var formatter = new NewtonsoftJsonOutputFormatter(new JsonSerializerSettings(), ArrayPool <char> .Shared, new MvcOptions(), new MvcNewtonsoftJsonOptions());
var memStream = new MemoryStream();
var outputFormatterContext = GetOutputFormatterContext(
beforeMessage,
typeof(string),
"application/json; charset=utf-8",
memStream);
// Act
await formatter.WriteResponseBodyAsync(outputFormatterContext, Encoding.UTF8);
// Assert
memStream.Position = 0;
var after = JToken.Load(new JsonTextReader(new StreamReader(memStream)));
var afterMessage = after.ToObject <string>();
Assert.Equal(beforeMessage, afterMessage);
}