[Test] Fix color mismatch on UI Compacibility test case (#689)

Author: Kyle-Ye

Example/OpenSwiftUIUITests/Animation/Animation/AnimationCompletionUITests.swift

@@ -47,7 +47,7 @@ struct AnimationCompletionUITests {
         }
         // When run seperately, precision: 1.0 works fine
         // but in the full suite, it will hit the same issue of #340
-        withKnownIssue("#340", isIntermittent: true) {
+        withKnownIssue("#690", isIntermittent: true) {
             openSwiftUIAssertAnimationSnapshot(
                 of: ContentView()
             )

Example/OpenSwiftUIUITests/Animation/Animation/BezierAnimationUITests.swift

@@ -77,7 +77,7 @@ struct BezierAnimationUITests {
         }
         // When run seperately, precision: 1.0 works fine
         // but in the full suite, it will hit the same issue of #340
-        withKnownIssue("$340", isIntermittent: true) {
+        withKnownIssue("$690", isIntermittent: true) {
             openSwiftUIAssertAnimationSnapshot(
                 of: ContentView(),
             )

Example/OpenSwiftUIUITests/Animation/Animation/RepeatAnimationUITests.swift

@@ -31,7 +31,7 @@ struct RepeatAnimationUITests {
                     }
             }
         }
-        withKnownIssue("#340", isIntermittent: true) {
+        withKnownIssue("#690", isIntermittent: true) {
             openSwiftUIAssertAnimationSnapshot(
                 of: ContentView(autoreverses: autoreverses),
                 testName: #function + "\(autoreverses)"

Example/OpenSwiftUIUITests/Graphic/Color/ColorUITests.swift

@@ -75,7 +75,7 @@ struct ColorUITests {
                     }
             }
         }
-        withKnownIssue("#340", isIntermittent: true) {
+        withKnownIssue("#690", isIntermittent: true) {
             openSwiftUIAssertAnimationSnapshot(of: ContentView())
         }
     }

Example/OpenSwiftUIUITests/Layout/Stack/ZStackUITests.swift

@@ -87,9 +87,7 @@ struct ZStackUITests {
             }
         }
         openSwiftUIAssertSnapshot(
-            of: ContentView(),
-            // FIXME: Workaround #340
-            perceptualPrecision: 0.99
+            of: ContentView()
         )
     }
 }

Example/OpenSwiftUIUITests/UITests/Initialize.c

@@ -0,0 +1,15 @@
+//
+//  Initialize.c
+//  OpenSwiftUIUITests
+//
+//  Created by Kyle on 12/29/25.
+//
+
+#include "Initialize.h"
+#include <stdio.h>
+
+extern void OpenSwiftUIUITests_InitializeSwift(void);
+
+static void OpenSwiftUIUITests_Initialize(void) {
+    OpenSwiftUIUITests_InitializeSwift();
+}

Example/OpenSwiftUIUITests/UITests/Initialize.h

@@ -0,0 +1,11 @@
+//
+//  Initialize.h
+//  OpenSwiftUIUITests
+//
+//  Created by Kyle on 12/29/25.
+//
+
+#pragma once
+
+__attribute__((constructor, used))
+static void OpenSwiftUIUITests_Initialize(void);

Example/OpenSwiftUIUITests/UITests/Initialize.swift

@@ -0,0 +1,18 @@
+//
+//  Initialize.swift
+//  OpenSwiftUIUITests
+//
+//  Created by Kyle on 12/29/25.
+//
+
+#if OPENSWIFTUI
+@_spi(ForTestOnly)
+import OpenSwiftUI
+#endif
+
+@_cdecl("OpenSwiftUIUITests_InitializeSwift")
+func __initialize() -> () {
+    #if OPENSWIFTUI
+    Color.Resolved._alignWithSwiftUIImplementation = true
+    #endif
+}