Add test case for UIKit and CA private API

Author: Kyle-Ye

Tests/OpenSwiftUI_SPITests/Shims/CoreAnimationPrivateTests.swift

@@ -0,0 +1,23 @@
+//
+//  CoreAnimationPrivateTests.swift
+//  OpenSwiftUI_SPITests
+
+import OpenSwiftUI_SPI
+import Testing
+
+#if canImport(QuartzCore)
+@MainActor
+struct CoreAnimationPrivateTests {
+    @Test
+    func layer() {
+        let layer = CALayer()
+        #expect(layer.hasBeenCommitted == false)
+        layer.setAllowsEdgeAntialiasing(true)
+        layer.setAllowsGroupOpacity(true)
+        layer.setAllowsGroupBlending(true)
+        
+        layer.openSwiftUI_viewTestProperties = 42
+        #expect(layer.openSwiftUI_viewTestProperties == 42)
+    }
+}
+#endif

Tests/OpenSwiftUI_SPITests/Shims/UIKitPrivateTests.swift

@@ -0,0 +1,36 @@
+//
+//  UIKitPrivateTests.swift
+//  OpenSwiftUI_SPITests
+
+import OpenSwiftUI_SPI
+import Testing
+
+#if canImport(UIKit)
+@MainActor
+struct UIKitPrivateTests {
+    @Test
+    func application() {
+        let app = UIApplication.shared
+        let name = "ATest"
+        app.startedTest(name)
+        app.finishedTest(name)
+        app.failedTest(name, withFailure: nil)
+        #expect(app._launchTestName() == nil)
+    }
+
+    @Test
+    func view() {
+        let view = UIView()
+        #expect(view._shouldAnimateProperty(withKey: "frame") == false)
+        #expect(view._shouldAnimateProperty(withKey: "alpha") == false)
+
+        view._setFocusInteractionEnabled(true)
+    }
+
+    @Test
+    func viewController() {
+        let controller = UIViewController()
+        #expect(controller._canShowWhileLocked == true)
+    }
+}
+#endif