在单元测试中反序列化appsettings.json [英] Deserialize appsettings.json in unit test

问题描述

有很多 示例，它们显示了如何在 Startup.cs 类中反序列化您的应用程序设置。我明白了。但这不是我要的。我正在单元测试构造函数中工作。

There are many examples out there that show how to deserialize your app settings within the Startup.cs class. I get that. But that's not what I'm asking. I'm working within a unit test constructor.

此问题已关闭：在.NET Core测试项目中读取appsettings json值
但仔细阅读后，我没有看到扣篮的答案。

This question is close: Read appsettings json values in .NET Core Test Project But in reading it carefully, I'm not seeing a slam dunk answer.

appsettings.json：

appsettings.json:

{
  "AppSettings": {
    "myKey1": "myValue1",
    "myKey2": "myValue2",
  }
}

并且：

public class AppSettings
{
    public string myKey1 { get; set; }
    public string myKey2 { get; set; }
}

我能够很好地得到单个值：

I am able to get single values just fine:

var config = new ConfigurationBuilder()
              .AddJsonFile("appsettings.json", optional: false, reloadOnChange: true)
              .Build();
var myValue1 = config.GetSection("AppSettings:myKey1 ").Value;

但是我没有弄清楚的是如何创建 AppSettings 。我尝试过：

But what I'm not figuring out is how to get create an instance of AppSettings. I've tried:

var appSettings = config.GetValue<AppSettings>("AppSettings");

但这最终为空。而且我一直在尝试创建自己的 IServiceCollection 实例，所以我可以在 Startup.cs ，但是我没有任何进展。

But that ends up null. And I've played around with trying to create my own instance of IServiceCollection so I could do something like you might in Startup.cs, but I'm not making any progress.

推荐答案

我最终只是这样做了。

public class AppSettings
{
    AppSettings(IConfigurationRoot config)
    {
            myKey1 = config.GetSection("AppSettings:MyKey1").Value;
            myKey2 = config.GetSection("AppSettings:MyKey2").Value;
    }

    public string myKey1 { get; set; }
    public string myKey2 { get; set; }
}

虽然不理想，但可以完成工作，我可以继续。

Not ideal but it gets the job done and I can move on.

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