我正在模仿這個 SO 建議HttpClient進行單元測驗。它對單個端點按預期作業，我想知道如何針對不同的端點調整它。請參閱以下示例：
class Agent
{
private HttpClient _client;
private string _baseUri = "http://example.com/";
public Agent(HttpClient client)
{ _client = client; }
public bool Run()
{
var res1 = client.GetAsync(new Uri(_baseUri, "endpoint1"));
var res2 = client.GetAsync(new Uri(_baseUri, "endpoint2"));
return res1 == res2
}
}
// In the test method:
var responseMessage = new HttpResponseMessage
{
StatusCode = HttpStatusCode.OK,
Content = new StringContent("test_return")
};
var mock = new Mock<HttpMessageHandler>();
mock.Protected()
.Setup<Task<HttpResponseMessage>>(
"SendAsync",
ItExpr.IsAny<HttpRequestMessage>(),
ItExpr.IsAny<CancellationToken>())
.ReturnsAsync(responseMessage);
client = new HttpClient(mock.Object);
var agent = new Agent(client);
var resp = agent.Run();
Assert.True(resp)
在上面的例子中，resp將總是true因為作為模擬的結果，來自Run方法中兩個端點的回應將是相等的。
uj5u.com熱心網友回復：
我認為你應該設定兩個SendAsync呼叫，如下所示。
// response to /endpoint1
var responseMessage1 = new HttpResponseMessage
{
StatusCode = HttpStatusCode.OK,
Content = new StringContent("test_return")
};
// response to /endpoint2
var responseMessage2 = new HttpResponseMessage
{
StatusCode = HttpStatusCode.OK,
Content = new StringContent("test_other_return")
};
var mock = new Mock<HttpMessageHandler>();
// mock a call to /endpoint1
mock.Protected()
.Setup<Task<HttpResponseMessage>>(
"SendAsync",
ItExpr.Is<HttpRequestMessage>(
m => m.RequestUri.AbsolutePath.Contains(
"endpoint1")),
ItExpr.IsAny<CancellationToken>())
.ReturnsAsync(responseMessage1);
// mock a call to /endpoint2
mock.Protected()
.Setup<Task<HttpResponseMessage>>(
"SendAsync",
ItExpr.Is<HttpRequestMessage>(
m => m.RequestUri.AbsolutePath.Contains(
"endpoint2")),
ItExpr.IsAny<CancellationToken>())
.ReturnsAsync(responseMessage2);
var client = new HttpClient(mock.Object);
var agent = new Agent(client);
var resp = agent.Run();
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