c# - 模拟 HttpResponse WriteAsync

Question

我正在尝试调用在模拟HttpResponse 上模拟的WriteAsync，但我不知道要使用的语法。

var responseMock = new Mock<HttpResponse>();
responseMock.Setup(x => x.WriteAsync(It.IsAny<string>(), It.IsAny<CancellationToken>()));

ctx.Setup(x => x.Response).Returns(responseMock.Object);

出现以下错误的测试炸弹:

System.NotSupportedException : Invalid setup on an extension method: x => x.WriteAsync(It.IsAny(), It.IsAny())

最终我想验证是否已将正确的字符串写入响应。

如何正确设置？

Answer 1

为了完整性，这里有一个似乎适用于 .NET Core 3.1 的解决方案:

const string expectedResponseText = "I see your schwartz is as big as mine!";

DefaultHttpContext httpContext = new DefaultHttpContext();
httpContext.Response.Body = new MemoryStream();

// Whatever your test needs to do

httpContext.Response.Body.Position = 0;
using (StreamReader streamReader = new StreamReader(httpContext.Response.Body))
{
    string actualResponseText = await streamReader.ReadToEndAsync();
    Assert.Equal(expectedResponseText, actualResponseText);
}