Added unit tests for the ComponentTestContextViewDataExtensions.

Author: u-ashikov

test/MyTested.AspNetCore.Mvc.ViewData.Test/InternalTests/ComponentTestContextViewDataExtensionsTests.cs

@@ -0,0 +1,52 @@
+namespace MyTested.AspNetCore.Mvc.Test.InternalTests
+{
+    using Microsoft.AspNetCore.Http;
+    using Microsoft.Extensions.DependencyInjection.Extensions;
+    using Setups;
+    using Setups.Controllers;
+    using Setups.ViewComponents;
+    using System;
+    using Xunit;
+
+    public class ComponentTestContextViewDataExtensionsTests
+    {
+        [Fact]
+        public void GetViewDataShouldThrowInvalidOperationExceptionWithPocoViewComponent()
+        {
+            Test.AssertException<InvalidOperationException>(
+                () =>
+                {
+                    MyViewComponent<PocoViewComponent>
+                        .Instance()
+                        .InvokedWith(c => c.Invoke())
+                        .ShouldHave()
+                        .NoViewData()
+                        .AndAlso()
+                        .ShouldReturn()
+                        .View();
+                }, "ViewDataDictionary could not be found on the provided PocoViewComponent. The property should be specified manually by providing component instance or using the specified helper methods.");
+        }
+
+        [Fact]
+        public void GetViewDataShouldHaveNoViewDataForPocoController()
+        {
+            MyApplication
+                .StartsFrom<DefaultStartup>()
+                .WithServices(services =>
+                {
+                    services.TryAddSingleton<IHttpContextAccessor, HttpContextAccessor>();
+                });
+
+            MyController<FullPocoController>
+                .Instance()
+                .Calling(c => c.OkResultAction())
+                .ShouldHave()
+                .NoViewData()
+                .AndAlso()
+                .ShouldReturn()
+                .Ok();
+
+            MyApplication.StartsFrom<DefaultStartup>();
+        }
+    }
+}