在测试项目中使用ASP.NET Core的ConfigurationBuilder [英] Using ASP.NET Core's ConfigurationBuilder in a Test Project

问题描述

我想在我的功能测试项目中使用 IHostingEnvironment 和 ConfigurationBuilder ，以便根据环境，功能测试使用不同的配置集运行.我想利用下面的代码:

I want to use the IHostingEnvironment and ConfigurationBuilder in my functional test project, so that depending on the environment the functional tests run using a different set of configuration. I want to make use of the code below:

public IConfigurationRoot ConfigureConfiguration(IHostingEnvironment hostingEnvironment)
{
    var builder = new ConfigurationBuilder()
        .AddJsonFile("appsettings.json")
        .AddJsonFile($"appsettings.{hostingEnvironment.EnvironmentName}.json", true)
        .AddEnvironmentVariables();
    return builder.Build();
}

我想要一个 appSettings.json 和 appSettings.Production.json 文件，以将功能测试指向生产环境.这可能吗?如何实现?我需要一个 IHostingEnvironment 的实例.

I want to have an appSettings.json and appSettings.Production.json file to point my functional tests at production. Is this possible? How can it be achieved? I would need an instance of IHostingEnvironment.

推荐答案

您可以通过几个步骤在测试项目中使用 ConfigurationBuilder .我认为您本身不需要 IHostingEnvironment 接口.

You can use the ConfigurationBuilder in a test project with a couple of steps. I don't think you will need the IHostingEnvironment interface itself.

首先，向您的项目中添加两个具有 ConfigurationBuilder 扩展方法的NuGet软件包:

First, add two NuGet packages to your project which have the ConfigurationBuilder extension methods:

"dependencies": {
  "Microsoft.Extensions.Configuration.EnvironmentVariables": "1.0.0-rc1-final",
  "Microsoft.Extensions.Configuration.Json": "1.0.0-rc1-final"
}

第二，将所需的环境变量放入测试项目的属性中:

Second, put your desired environment variables into the test project's properties:

然后，您可以在测试项目中创建自己的构建器:

Then you can create your own builder in the test project:

private readonly IConfigurationRoot _configuration;

public BuildConfig()
{
    var environmentName = Environment.GetEnvironmentVariable("Hosting:Environment");

    var config = new ConfigurationBuilder()
        .AddJsonFile("appsettings.json")
        .AddJsonFile($"appsettings.{environmentName}.json", true)
        .AddEnvironmentVariables();

    _configuration = config.Build();
}

如果您要使用完全相同的设置文件(而不是副本)，则需要添加路径.

If you want to use precisely the same settings file (not a copy), then you'll need to add in a path to it.

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