MvvmCross.Core.ViewModels.MvxViewModelViewTypeFinder.FindTypeOrNull C# (CSharp) Method

        public virtual Type FindTypeOrNull(Type candidateType)
        {
            if (!this.CheckCandidateTypeIsAView(candidateType))
                return null;

            if (!candidateType.IsConventional())
                return null;

            var typeByAttribute = this.LookupAttributedViewModelType(candidateType);
            if (typeByAttribute != null)
                return typeByAttribute;

            var concrete = this.LookupAssociatedConcreteViewModelType(candidateType);
            if (concrete != null)
                return concrete;

            var typeByName = this.LookupNamedViewModelType(candidateType);
            if (typeByName != null)
                return typeByName;

            MvxTrace.Trace("No view model association found for candidate view {0}", candidateType.Name);
            return null;
        }

        public void Test_MvxViewModelViewTypeFinder()
        {
            ClearAll();

            var assembly = this.GetType().Assembly;
            var viewModelNameLookup = new MvxViewModelByNameLookup();
            viewModelNameLookup.AddAll(assembly);
            var nameMapping = new MvxPostfixAwareViewToViewModelNameMapping("View", "Oddness");
            var test = new MvxViewModelViewTypeFinder(viewModelNameLookup, nameMapping);

            // test for positives
            var result = test.FindTypeOrNull(typeof(Test1View));
            Assert.AreEqual(typeof(Test1ViewModel), result);
            result = test.FindTypeOrNull(typeof(NotTest2View));
            Assert.AreEqual(typeof(Test2ViewModel), result);
            result = test.FindTypeOrNull(typeof(NotTest3View));
            Assert.AreEqual(typeof(Test3ViewModel), result);
            result = test.FindTypeOrNull(typeof(OddNameOddness));
            Assert.AreEqual(typeof(OddNameViewModel), result);

            // test for negatives
            result = test.FindTypeOrNull(typeof(AbstractTest1View));
            Assert.IsNull(result);
            result = test.FindTypeOrNull(typeof(NotReallyAView));
            Assert.IsNull(result);
        }