模拟IConfigurationSection以返回字符串数组 设置用法

如何解决模拟IConfigurationSection以返回字符串数组 设置用法

使用this答案来模拟ASP.NET Core应用程序中的IConfiguration方法。

我需要模拟IConfigurationSection来返回string数组。

我的配置类如下：

public class LoggingConfiguration
{
    public string ApplicationName { get; set; }
    public string[] Loggers { get; set; }
}

appsettings.json

{
    "Logging": {
        "LoggingConfiguration": {
              "ApplicationName": "Some app","Loggers":  [ "diskLogger","MemoryLogger"],"diskLogger": {
                  "SomeSettingOne" : "setting","SomeSettingTwo" : "setting",},"MemoryLogger": {
                  "AnotherSetting": "...",}
       }

在设置模拟时-我有两个问题。

1. 我不知道如何模拟将返回IConfigurationSection（string[]）的loggers
2. 当我尝试在GetChildren()上设置LoggingSectionMock方法时遇到异常

public void Setup()
{
    var applicationNameConfigurationSectionMock = new Mock<IConfigurationSection>();
    applicationNameConfigurationSectionMock.Setup(m => m.Value).Returns(TestingApplicationName);

    var loggerNamesConfigurationSectionMock = new Mock<IConfigurationSection>();
    loggerNamesConfigurationSectionMock.Setup(m => m.GetChildren()).Returns(GetLoggerNamesSection);

    //Throwing Method Not Found exception
    LoggingSectionMock.Setup(m => m.GetChildren()).Returns(new List<IConfigurationSection>
        {applicationNameConfigurationSectionMock.Object,loggerNamesConfigurationSectionMock.Object});

    ConfigurationMock.Setup(m => m.GetSection($"{Logging}:{LoggingConfiguration}"))
        .Returns(() => LoggingSectionMock.Object);
}

private IEnumerable<IConfigurationSection> GetLoggerNamesSection()
{
    var loggerNamesConfigurationSections = new List<IConfigurationSection>();
    LoggerNames.ToList().ForEach(loggerName =>
    {
        var configSectionMock = new Mock<IConfigurationSection>();
        configSectionMock.Setup(m => m.Value).Returns(loggerName);
        loggerNamesConfigurationSections.Add(configSectionMock.Object);
    });
    return loggerNamesConfigurationSections;
}

解决方法

作为替代方案，您可以利用ConfigurationBuilder的{​​{1}}：

参考Memory configuration provider

设置

AddInMemoryCollection

用法

IConfiguration configRoot = new ConfigurationBuilder()
    .AddInMemoryCollection(new Dictionary<string,string>
    {
        { "ApplicationName","App" },{ "Loggers:0","1" },{ "Loggers:1","2" },{ "Loggers:2","3" }
    })
    .Build();