我正在使用 Moq 为单元测试创建模拟,但是当我必须为 httpclient 的 getasync 方法创建模拟时,我陷入了困境。以前我使用 SendAsync 方法,为此我可以使用以下代码:
var mockResponse =
new HttpResponseMessage(HttpStatusCode.OK) {Content = new StringContent(expectedResponse)};
mockResponse.Content.Headers.ContentType = new MediaTypeHeaderValue("application/json");
var mockHandler = new Mock<DelegatingHandler>();
mockHandler
.Protected()
.Setup<Task<HttpResponseMessage>>(
"SendAsync",
ItExpr.Is<HttpRequestMessage>(
message => message.Headers.Contains("Authorization")
&& message.Headers.Authorization.Parameter.Equals(accessToken)
&& message.Headers.Authorization.Scheme.Equals("Bearer")
&& message.RequestUri.AbsoluteUri.Contains(baseUrl)
),
ItExpr.IsAny<CancellationToken>())
.Returns(Task.FromResult(mockResponse));
现在我有一个方法:
private async Task<List<Model>> GetData()
{
string url = url;
_httpClient.BaseAddress = new Uri(url);
_httpClient.DefaultRequestHeaders.Add(Headers.AuthorizationHeader, "Bearer" + "token");
var response = await _httpClient.GetAsync(url);
response.EnsureSuccessStatusCode();
return await response.Content.ReadAsAsync<List<Model>>();
}
现在我可以为此方法创建模拟(getasync)吗?有什么帮助吗?
内部GetAsync
最终会打电话SendAsync
.
public Task<HttpResponseMessage> GetAsync(Uri requestUri, HttpCompletionOption completionOption,
CancellationToken cancellationToken)
{
return SendAsync(new HttpRequestMessage(HttpMethod.Get, requestUri), completionOption, cancellationToken);
}
源代码
松开ItExpr
期望,并且您应该能够让它按预期运行。
使用最初提供的示例
mockHandler
.Protected()
.Setup<Task<HttpResponseMessage>>(
"SendAsync",
ItExpr.IsAny<HttpRequestMessage>(),
ItExpr.IsAny<CancellationToken>()
)
.ReturnsAsync(mockResponse);
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