public void should_choose_correct_overloading_method_at_compile_time_2()
{
var demoObject = new MethodOverloadDemoClass();
string chosenOne = demoObject.Foo((object)1);
// change variable value to correct one.
const string expected = "Foo(object)";
Assert.Equal(expected, chosenOne);
}
public void should_choose_correct_overloading_method_at_compile_time_3()
{
var demoObject = new MethodOverloadDemoClass();
const short argument = 2;
string chosenOne = demoObject.Foo(argument);
// change variable value to correct one.
const string expected = "Foo(int)"; //short是int的一种情况；
Assert.Equal(expected, chosenOne);
}
public void should_be_able_to_choose_most_specific_type_when_overloading()
{
var demoClass = new MethodOverloadDemoClass();
string returnValueForBaseClassOverloading =
demoClass.Foo(new MethodOverloadBaseClass());
string returnValueForDerivedClassOverloading =
demoClass.Foo(new MethodOverloadDerivedClass());
string returnValueForCastingOverloading =
demoClass.Foo((MethodOverloadBaseClass)(new MethodOverloadDerivedClass()));
const string expectedBaseClassOverloadingValue = "Foo(MethodOverloadBaseClass)";
const string expectedDerivedClassOverloadingValue = "Foo(MethodOverloadDerivedClass)";
const string expectedCastOverloadingValue = "Foo(MethodOverloadBaseClass)";
Assert.Equal(expectedBaseClassOverloadingValue, returnValueForBaseClassOverloading);
Assert.Equal(expectedDerivedClassOverloadingValue, returnValueForDerivedClassOverloading);
Assert.Equal(expectedCastOverloadingValue, returnValueForCastingOverloading);
}
