public void TestGetValue_Complex()
{
var test = new LambdaTest1()
{
Name = "a", A = new LambdaTest1.TestA()
{
Address = "b"
}
};
//获取表达式的值
Expression <Func <LambdaTest1, bool> > expression = t => t.Name == test.Name;
Assert.AreEqual("a", LambdaHelper.GetValue(expression), "==test.Name");
Expression <Func <LambdaTest1, bool> > expression2 = t => t.Name == test.A.Address;
Assert.AreEqual("b", LambdaHelper.GetValue(expression2), "==test.A.Address");
//获取方法的值
Expression <Func <LambdaTest1, bool> > expression3 = t => t.Name.Contains(test.Name);
Assert.AreEqual("a", LambdaHelper.GetValue(expression3), "Contains test.Name");
Expression <Func <LambdaTest1, bool> > expression4 = t => t.Name.Contains(test.A.Address);
Assert.AreEqual("b", LambdaHelper.GetValue(expression4), "==test.A.Address");
}
public void TestGetValue_Enum()
{
var lambdaTestEnum = new LambdaTest1();
lambdaTestEnum.NullableEnumValue = LogType.Error;
//属性为枚举，值为枚举
Expression <Func <LambdaTest1, bool> > expression = test => test.EnumValue == LogType.Debug;
Assert.AreEqual(LogType.Debug.Value(), LambdaHelper.GetValue(expression));
//属性为枚举,值为可空枚举
expression = test => test.EnumValue == lambdaTestEnum.NullableEnumValue;
Assert.AreEqual(LogType.Error, LambdaHelper.GetValue(expression));
//属性为可空枚举,值为枚举
expression = test => test.NullableEnumValue == LogType.Debug;
Assert.AreEqual(LogType.Debug, LambdaHelper.GetValue(expression));
//属性为可空枚举,值为可空枚举
expression = test => test.NullableEnumValue == lambdaTestEnum.NullableEnumValue;
Assert.AreEqual(LogType.Error, LambdaHelper.GetValue(expression));
//属性为可空枚举,值为null
lambdaTestEnum.NullableEnumValue = null;
expression = test => test.NullableEnumValue == lambdaTestEnum.NullableEnumValue;
Assert.AreEqual(null, LambdaHelper.GetValue(expression));
}
public void TestGetValue_Instance()
{
var test = new LambdaTest1()
{
Name = "a", A = new LambdaTest1.TestA()
{
Address = "b", B = new LambdaTest1.TestA.TestB()
{
Name = "c"
}
}
};
//一级属性
Expression <Func <string> > expression = () => test.Name;
Assert.AreEqual("a", LambdaHelper.GetValue(expression));
//二级属性
Expression <Func <string> > expression2 = () => test.A.Address;
Assert.AreEqual("b", LambdaHelper.GetValue(expression2));
//三级属性
Expression <Func <string> > expression3 = () => test.A.B.Name;
Assert.AreEqual("c", LambdaHelper.GetValue(expression3));
}
