public void Test_MethodInvoker_Basic()
{
var viewModel5 = new TestViewModel5();
var canMethodInvoker = new MethodInvoker(new BindContext(viewModel5, "TestViewModel"), "CanAddAge", null);
var methodInvoker = new MethodInvoker(new BindContext(viewModel5, "TestViewModel"), "AddAge", null);
bool value = canMethodInvoker.CanInvoke();
Assert.IsFalse(value);
methodInvoker.Invoke();
viewModel5.TestViewModel = new TestViewModel();
value = canMethodInvoker.CanInvoke();
Assert.IsTrue(value);
methodInvoker.Invoke();
Assert.AreEqual(1, viewModel5.TestViewModel.Age);
var canMethodInvoker2 = new MethodInvoker(new BindContext(viewModel5, "TestViewModel"), "AddAge", null);
MissingMemberException exception = null;
try
{
canMethodInvoker2.CanInvoke();
}
catch (MissingMemberException e)
{
exception = e;
}
Assert.IsNotNull(exception);
var vm = new TestViewModel();
var canMethodInvoker3 = new MethodInvoker(new BindContext(viewModel5, "TestViewModel"), "CanSetAge",
new[] { new BindContext(vm, "Age") });
var methodInvoker2 = new MethodInvoker(new BindContext(viewModel5, "TestViewModel"), "SetAge",
new[] { new BindContext(vm, "Age") });
Assert.IsTrue(canMethodInvoker3.CanInvoke());
vm.Age = 6;
Assert.AreNotEqual(6, viewModel5.TestViewModel.Age);
methodInvoker2.Invoke();
Assert.AreEqual(6, viewModel5.TestViewModel.Age);
}
public void Test_BindingEngine_MethodBinding_Expression()
{
var viewModel = new TestViewModel5();
var button = new Button();
BindingEngine.SetMethodBinding(button, null, viewModel, o => o.TestViewModel)
.Initialize<WeakMethodBinding>()
.AttachSourceMethod("AddAge", null)
.AttachSourceCanInvokeMethod("CanAddAge", null)
.AttachTargetEvent("Click");
viewModel.TestViewModel = new TestViewModel();
Assert.AreEqual(0, viewModel.TestViewModel.Age);
button.PerformClick();
Assert.AreEqual(1, viewModel.TestViewModel.Age);
}
