Fix `testColorInterpolation` on macOS

Libraries/NativeAnimation/Nodes/RCTInterpolationAnimatedNode.m

@@ -105,8 +105,8 @@ NSString *RCTInterpolateString(
     for (id value in outputRangeConfig) {
       switch (_outputType) {
         case RCTInterpolationOutputColor: {
-          UIColor *color = [RCTConvert UIColor:value];
-          [outputRange addObject:color ? color : [UIColor whiteColor]];
+          RCTUIColor *color = [RCTConvert UIColor:value]; // [macOS]
+          [outputRange addObject:color ? color : [RCTUIColor whiteColor]]; // [macOS]
           break;
         }
         case RCTInterpolationOutputString:

Libraries/NativeAnimation/RCTAnimationUtils.h

@@ -9,6 +9,7 @@
 #import <Foundation/Foundation.h>
 
 #import <React/RCTDefines.h>
+#import <React/RCTUIKit.h> // [macOS]
 
 RCT_EXTERN NSString *const EXTRAPOLATE_TYPE_IDENTITY;
 RCT_EXTERN NSString *const EXTRAPOLATE_TYPE_CLAMP;
@@ -32,11 +33,11 @@ RCT_EXTERN CGFloat RCTInterpolateValueInRange(
     NSString *extrapolateLeft,
     NSString *extrapolateRight);
 
-RCT_EXTERN int32_t
-RCTInterpolateColorInRange(CGFloat value, NSArray<NSNumber *> *inputRange, NSArray<UIColor *> *outputRange);
+RCT_EXTERN uint32_t
+RCTInterpolateColorInRange(CGFloat value, NSArray<NSNumber *> *inputRange, NSArray<RCTUIColor *> *outputRange); // [macOS]
 
 // Represents a color as a int32_t. RGB components are assumed to be in [0-255] range and alpha in [0-1] range
-RCT_EXTERN int32_t RCTColorFromComponents(CGFloat red, CGFloat green, CGFloat blue, CGFloat alpha);
+RCT_EXTERN uint32_t RCTColorFromComponents(CGFloat red, CGFloat green, CGFloat blue, CGFloat alpha);
 
 /**
  * Coefficient to slow down animations, respects the ios

Libraries/NativeAnimation/RCTAnimationUtils.m

@@ -84,7 +84,7 @@ CGFloat RCTInterpolateValueInRange(
   return RCTInterpolateValue(value, inputMin, inputMax, outputMin, outputMax, extrapolateLeft, extrapolateRight);
 }
 
-int32_t RCTInterpolateColorInRange(CGFloat value, NSArray<NSNumber *> *inputRange, NSArray<UIColor *> *outputRange)
+uint32_t RCTInterpolateColorInRange(CGFloat value, NSArray<NSNumber *> *inputRange, NSArray<RCTUIColor *> *outputRange) // [macOS]
 {
   NSUInteger rangeIndex = RCTFindIndexOfNearestValue(value, inputRange);
   CGFloat inputMin = inputRange[rangeIndex].doubleValue;
@@ -102,10 +102,10 @@ int32_t RCTInterpolateColorInRange(CGFloat value, NSArray<NSNumber *> *inputRang
       alphaMin + (value - inputMin) * (alphaMax - alphaMin) / (inputMax - inputMin));
 }
 
-int32_t RCTColorFromComponents(CGFloat red, CGFloat green, CGFloat blue, CGFloat alpha)
+uint32_t RCTColorFromComponents(CGFloat red, CGFloat green, CGFloat blue, CGFloat alpha)
 {
-  return ((int)round(alpha * 255) & 0xFF) << 24 | ((int)round(red) & 0xFF) << 16 | ((int)round(green) & 0xFF) << 8 |
-      ((int)round(blue) & 0xFF);
+  return ((uint32_t)round(alpha * 255) & 0xFF) << 24 | ((uint32_t)round(red) & 0xFF) << 16 | ((uint32_t)round(green) & 0xFF) << 8 |
+      ((uint32_t)round(blue) & 0xFF);
 }
 
 #if TARGET_IPHONE_SIMULATOR

packages/rn-tester/RNTesterUnitTests/RCTAnimationUtilsTests.m

@@ -98,15 +98,15 @@ static CGFloat RCTSimpleInterpolation(CGFloat value, NSArray<NSNumber *> *inputR
 - (void)testColorInterpolation
 {
   NSArray<NSNumber *> *input = @[ @0, @1 ];
-  NSArray<UIColor *> *output = @[ [UIColor redColor], [UIColor blueColor] ];
+  NSArray<RCTUIColor *> *output = @[ [RCTUIColor redColor], [RCTUIColor blueColor] ]; // [macOS]
   uint32_t value;
   value = RCTInterpolateColorInRange(0, input, output);
-  XCTAssertEqualObjects([RCTConvert UIColor:@(value)], [UIColor redColor]);
+  XCTAssertEqualObjects([RCTConvert UIColor:@(value)], [RCTUIColor redColor]); // [macOS]
   value = RCTInterpolateColorInRange(0.5, input, output);
   XCTAssertEqualObjects(
-      [RCTConvert UIColor:@(value)], [UIColor colorWithRed:128. / 255 green:0 blue:128. / 255 alpha:1]);
+      [RCTConvert UIColor:@(value)], [RCTUIColor colorWithRed:128. / 255 green:0 blue:128. / 255 alpha:1]); // [macOS]
   value = RCTInterpolateColorInRange(1, input, output);
-  XCTAssertEqualObjects([RCTConvert UIColor:@(value)], [UIColor blueColor]);
+  XCTAssertEqualObjects([RCTConvert UIColor:@(value)], [RCTUIColor blueColor]); // [macOS]
 }
 
 - (void)testStringInterpolation