[英]Flurl & HttpTest: Unit tests fail when Run All, but pass when run individually
更新:根據項目的GitHub問題 , HttpTest
不是線程安全的。 在問題解決之前,不能並行運行使用HttpTest
測試。
我有一個使用Flurl和xUnit的測試真的很奇怪,當在VS Test Explorer中運行All時,它將失敗,但是如果單獨運行,則可以通過。 我一生無法看到兩個甚至彼此相關的地方,但它們確實有關系。
我將它們從項目中提取到一個新項目中,問題仍然存在。 我將它們捆綁到7z中,供有興趣將其加載到VS的任何人使用,但完整代碼如下。
項目通用
GetApi1:
using System;
using System.Collections.Generic;
using System.Diagnostics;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using Flurl;
using Flurl.Http;
namespace Project.Commons
{
public class GetApi1
{
public async Task<string> ExecuteAsync(string token)
{
string apikeyKeyname = "token";
dynamic response = await "http://www.api.com"
.SetQueryParams(new { token = token })
.GetJsonAsync();
string receivedApiKey = ((IDictionary<string, object>)response)[apikeyKeyname].ToString();
return receivedApiKey;
}
}
}
GetApi2:
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using Flurl;
using Flurl.Http;
namespace Project.Commons
{
public class GetApi2
{
public async Task<IList<string>> ExecuteAsync()
{
var responses = await "http://www.api.com"
.GetJsonAsync<List<string>>();
var result = new List<string>();
foreach (var response in responses)
{
result.Add("refined stuff");
}
return result;
}
}
}
項目測試
UnitTest1:
using Project.Commons;
namespace Project.Tests
{
public class UnitTest1
{
private ITestOutputHelper output;
public UnitTest1(ITestOutputHelper output)
{
this.output = output;
}
[Fact]
public async Task ShouldBeAbleToGetApiKeyFromToken()
{
// Arrange
using (var httpTest = new HttpTest())
{
var jsonResponse = new { token = "abcdef" };
string expectedApiKey = "abcdef";
httpTest.RespondWithJson(jsonResponse);
var api = new GetApi1();
// Act
var receivedApiKey = await api.ExecuteAsync("mockToken");
output.WriteLine("Received apikey = " + receivedApiKey);
// Assert
Assert.Equal(expectedApiKey, receivedApiKey);
}
}
}
}
單元測試2
using Flurl.Http.Testing;
using Project.Commons;
using Xunit;
using Xunit.Abstractions;
namespace Project.Tests
{
public class UnitTest2
{
#region Mock API JSON Response
private IList<string> mockResponse = new List<string>()
{
"raw stuff", "raw stuff", "raw stuff"
};
#endregion
#region Expected Result
private IList<string> expectedResult = new List<string>()
{
"refined stuff", "refined stuff", "refined stuff"
};
#endregion
[Fact]
public async Task CanGetProjectsByWeek()
{
// Arrange
using (var httpTest = new HttpTest())
{
httpTest.RespondWithJson(mockResponse);
// Act
var api = new GetApi2();
var actualResult = await api.ExecuteAsync();
// Assert
Assert.Equal(expectedResult,actualResult);
}
}
}
}
注釋是正確的-缺乏線程安全性是HttpTest的已知限制。 它已記錄並正在調查中。 如今,並行測試比幾年前創建時要普及得多,因此,盡管修復程序不容易,但我們還是將其作為高優先級來對待。
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