如何在匿名方法中包装属性赋值

本文关键字：包装 属性 赋值 方法 | 更新日期: 2023-09-27 18:30:57

基本上，我创建了一个自定义的 Assert 方法，该方法断言抛出了异常。这对我正在做的一些单元测试来说很方便

除非它将操作作为参数（显然），但不会将属性分配作为操作。

如何将属性赋值包装在匿名函数中？

public static class AssertException
{
    public static void DoesntThrow<T>(Action func) where T : Exception
    {
        try
        {
            func.Invoke();
        }
        catch (Exception e)
        {
            Assert.Fail("No exception was expected but exception of type " 
                + e.GetType() + " with message " + e.Message + " was thrown");
        }
    }
    public static void Throws<T>(Action func, string expectedMessage = "") where T : Exception
    {
        bool exceptionThrown = false;
        try
        {
            func.Invoke();
        }
        catch ( Exception e )
        {
            Assert.IsTrue(e.GetType() == typeof(T), "Expected exception of type " + typeof(T) 
                + " but type of " + e.GetType() + " was thrown instead");
            if (!expectedMessage.Equals(""))
            {
                Assert.AreEqual(e.Message == expectedMessage, "Expected exception with message of "
                    + expectedMessage + " but exception with message " + e.Message + " was thrown instead");
            }
            return;
        }
        Assert.Fail("Expected exception of type " + typeof(T) + " but no exception was thrown");
    }
}

和电话：

AssertException.DoesntThrow<Exception>(robot.Instructions = "RLRLMLR");

这给了我：

Error   2   The best overloaded method match for 'RobotWarsTests.AssertException.DoesntThrow<System.Exception>(System.Action)' has some invalid arguments   C:'Users'User'Documents'Visual Studio 2012'Projects'RobotWars'RobotWarsTests'UnitTest1.cs   20  13  RobotWarsTests

如何在匿名方法中包装属性赋值

AssertException.DoesntThrow<Exception>(() => { robot.Instructions = "RLRLMLR"; });

这将创建一个 lambda 表达式，该表达式不()参数，并在大括号内执行代码。

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