Added test.

Author: azchohfi

components/MarkdownTextBlock/tests/ExampleMarkdownTextBlockTestClass.cs

@@ -131,4 +131,27 @@ public async Task ComplexAsyncLoadUIExampleWithoutDispatcherTest()
 
         Assert.IsFalse(component.IsLoaded);
     }
+
+    // You can still use the UIThreadTestMethod to remove the extra layer for the dispatcher as well:
+    [TestMethod]
+    public async Task ComplexAsyncLoadUIExampleWithCustomConfigTest()
+    {
+        await EnqueueAsync(async () =>
+        {
+            var component = new MarkdownTextBlock
+            {
+                Config = new MarkdownConfig()
+            };
+            Assert.IsNotNull(component);
+            Assert.IsFalse(component.IsLoaded);
+
+            await LoadTestContentAsync(component);
+
+            Assert.IsTrue(component.IsLoaded);
+
+            await UnloadTestContentAsync(component);
+
+            Assert.IsFalse(component.IsLoaded);
+        });
+    }
 }