C# (CSharp) cmstar.RapidReflection.Emit ConstructorInvokerGenerator.CreateDelegate Exemples

Exemple #1

        public void CreateDelegateFromType()
        {
            Assert.Throws <ArgumentException>(
                () => ConstructorInvokerGenerator.CreateDelegate(typeof(IInternalInterface)));
            Assert.Throws <ArgumentException>(
                () => ConstructorInvokerGenerator.CreateDelegate(typeof(Type)));
            Assert.Throws <ArgumentException>(
                () => ConstructorInvokerGenerator.CreateDelegate(typeof(InternalClassWithNoParameterlessConstructor)));

            var func = ConstructorInvokerGenerator.CreateDelegate(typeof(InternalClass));

            Assert.IsInstanceOf <InternalClass>(func());

            func = ConstructorInvokerGenerator.CreateDelegate(typeof(InternalStruct));
            Assert.IsInstanceOf <InternalStruct>(func());
        }

Exemple #2

        public void CreateDelegateFromContructorInfoForClassThrowsException()
        {
            var ctor = typeof(InternalClassWithNoParameterlessConstructor)
                       .GetConstructor(new[] { typeof(int) });

            //with argument validation
            var func = ConstructorInvokerGenerator.CreateDelegate(ctor);

            Assert.Throws <ArgumentNullException>(() => func(null));
            Assert.Throws <ArgumentException>(() => func(new object[0]));
            Assert.Throws <InvalidCastException>(() => func(new object[] { "1" }));

            //without argument validation
            func = ConstructorInvokerGenerator.CreateDelegate(ctor, false);
            Assert.Throws <NullReferenceException>(() => func(null));
            Assert.Throws <IndexOutOfRangeException>(() => func(new object[0]));
        }

Exemple #3

        public void CreateDelegateFromContructorInfoForClass()
        {
            var ctor = typeof(InternalClass).GetConstructor(Type.EmptyTypes);
            var func = ConstructorInvokerGenerator.CreateDelegate(ctor);

            Assert.IsInstanceOf <InternalClass>(func(null));

            ctor = typeof(InternalClassWithNoParameterlessConstructor)
                   .GetConstructor(new[] { typeof(int) });
            func = ConstructorInvokerGenerator.CreateDelegate(ctor);
            Assert.IsInstanceOf <InternalClassWithNoParameterlessConstructor>(func(new object[] { 1 }));

            ctor = typeof(InternalClassWithNoParameterlessConstructor)
                   .GetConstructor(new[] { typeof(int), typeof(string) });
            func = ConstructorInvokerGenerator.CreateDelegate(ctor);
            Assert.IsInstanceOf <InternalClassWithNoParameterlessConstructor>(func(new object[] { 1, "s" }));
            Assert.IsInstanceOf <InternalClassWithNoParameterlessConstructor>(func(new object[] { 1, "s", 123 })); //the third para will be ignored

            ctor = typeof(InternalClassWithNoParameterlessConstructor)
                   .GetConstructor(new[] { typeof(int), typeof(string), typeof(double) });
            func = ConstructorInvokerGenerator.CreateDelegate(ctor);
            Assert.IsInstanceOf <InternalClassWithNoParameterlessConstructor>(func(new object[] { 1, "s", 0.123 }));
        }