Fixed some leftover unit test build errors

Author: Sergio0694

UnitTests/UnitTests.UWP/Extensions/Test_LogicalTreeExtensions.cs

@@ -294,7 +294,7 @@ await App.DispatcherQueue.EnqueueAsync(async () =>
                 await SetTestContentAsync(treeRoot);
 
                 // Main Test
-                var thing = treeRoot.FindChildren<UniformGrid>();
+                var thing = treeRoot.FindChildren().OfType<UniformGrid>();
 
                 Assert.IsNotNull(thing, "Expected to still have enumerable.");
 

UnitTests/UnitTests.UWP/Extensions/Test_VisualTreeExtensions.cs

@@ -45,7 +45,7 @@ await App.DispatcherQueue.EnqueueAsync(async () =>
                 await SetTestContentAsync(treeRoot);
 
                 // Main Test
-                var textBlock = treeRoot.FindDescendantByName("TargetElement");
+                var textBlock = treeRoot.FindDescendant("TargetElement");
 
                 Assert.IsNotNull(textBlock, "Expected to find something.");
                 Assert.IsInstanceOfType(textBlock, typeof(TextBlock), "Didn't find expected typed element.");
@@ -80,7 +80,7 @@ await App.DispatcherQueue.EnqueueAsync(async () =>
                 await SetTestContentAsync(treeRoot);
 
                 // Main Test
-                var textBlock = treeRoot.FindDescendantByName("TargetElement");
+                var textBlock = treeRoot.FindDescendant("TargetElement");
 
                 Assert.IsNull(textBlock, "Didn't expect to find anything.");
             });
@@ -220,7 +220,7 @@ await App.DispatcherQueue.EnqueueAsync(async () =>
                 await SetTestContentAsync(treeRoot);
 
                 // Main Test
-                var textBlocks = treeRoot.FindDescendants<TextBlock>();
+                var textBlocks = treeRoot.FindDescendants().OfType<TextBlock>();
 
                 Assert.IsNotNull(textBlocks, "Expected to find something.");
 
@@ -267,7 +267,7 @@ await App.DispatcherQueue.EnqueueAsync(async () =>
                 await SetTestContentAsync(treeRoot);
 
                 // Main Test
-                var thing = treeRoot.FindDescendants<UniformGrid>();
+                var thing = treeRoot.FindDescendants().OfType<UniformGrid>();
 
                 Assert.IsNotNull(thing, "Expected to find something.");
 
@@ -411,7 +411,7 @@ await App.DispatcherQueue.EnqueueAsync(async () =>
                 Assert.IsNotNull(startingPoint, "Could not find starting element.");
 
                 // Main Test
-                var grid = startingPoint.FindAscendantByName("TargetElement");
+                var grid = startingPoint.FindAscendant("TargetElement");
 
                 Assert.IsNotNull(grid, "Expected to find Grid");
                 Assert.AreEqual(targetGrid, grid, "Grid didn't match expected.");
@@ -458,7 +458,7 @@ await App.DispatcherQueue.EnqueueAsync(async () =>
                 Assert.IsNotNull(startingPoint, "Could not find starting element.");
 
                 // Main Test
-                var grid = startingPoint.FindAscendantByName("TargetElement");
+                var grid = startingPoint.FindAscendant("TargetElement");
 
                 Assert.IsNull(grid, "Didn't expect to find anything.");
             });