單元測試
在大部分的情況下,不需要設定其他元件來執行測試。 但如果被測試的元件使用 HttpRuntime,則可能需要啟動 SystemWebAdapters
服務,如下例所示:
namespace TestProject1;
/// <summary>
/// This demonstrates an xUnit feature that ensures all tests
/// in classes marked with this collection are run sequentially.
/// </summary>
[CollectionDefinition(nameof(SystemWebAdaptersHostedTests),
DisableParallelization = true)]
public class SystemWebAdaptersHostedTests
{
}
[Collection(nameof(SystemWebAdaptersHostedTests))]
public class RuntimeTests
{
/// <summary>
/// This method starts up a host in the background that
/// makes it possible to initialize <see cref="HttpRuntime"/>
/// and <see cref="HostingEnvironment"/> with values needed
/// for testing with the <paramref name="configure"/> option.
/// </summary>
/// <param name="configure">
/// Configuration for the hosting and runtime options.
/// </param>
public static async Task<IDisposable> EnableRuntimeAsync(
Action<SystemWebAdaptersOptions>? configure = null,
CancellationToken token = default)
=> await new HostBuilder()
.ConfigureWebHost(webBuilder =>
{
webBuilder
.UseTestServer()
.ConfigureServices(services =>
{
services.AddSystemWebAdapters();
if (configure is not null)
{
services.AddOptions
<SystemWebAdaptersOptions>()
.Configure(configure);
}
})
.Configure(app =>
{
// No need to configure pipeline for tests
});
})
.StartAsync(token);
[Fact]
public async Task RuntimeEnabled()
{
using (await EnableRuntimeAsync(options =>
options.AppDomainAppPath = "path"))
{
Assert.True(HostingEnvironment.IsHosted);
Assert.Equal("path", HttpRuntime.AppDomainAppPath);
}
Assert.False(HostingEnvironment.IsHosted);
}
}
測試必須按順序執行,而不是平行執行。 前面的範例說明如何透過將 XUnit 的 DisableParallelization
選項設為 true
來達到此目的。 此設定會停用特定測試集合的平行執行,確保該集合內的測試會逐一執行,而不是並行地執行。