Fix the unit test compile issue

Fix the webp unit test for visionOS

Tests/Tests/SDImageCoderTests.m

@@ -9,8 +9,12 @@
 
 #import "SDTestCase.h"
 #import "UIColor+SDHexString.h"
+#if !SD_VISION
 #if __has_include(<SDWebImageWebPCoder/SDWebImageWebPCoder.h>)
 #import <SDWebImageWebPCoder/SDWebImageWebPCoder.h>
+#else
+@import SDWebImageWebPCoder;
+#endif
 #endif
 
 @interface SDWebImageDecoderTests : SDTestCase

Tests/Tests/SDTestCase.m

@@ -39,7 +39,9 @@ NSString *const kTestAPNGPURL = @"https://upload.wikimedia.org/wikipedia/commons
         CGRect screenFrame = mainScreen.bounds;
 #endif
         _window = [[UIWindow alloc] initWithFrame:screenFrame];
-#else
+#endif // UIKit
+#if SD_MAC
+        UIScreen *mainScreen = [UIScreen mainScreen];
         _window = [[NSWindow alloc] initWithContentRect:mainScreen.frame styleMask:0 backing:NSBackingStoreBuffered defer:NO screen:mainScreen];
 #endif
     }

Tests/Tests/SDWebImageManagerTests.m

@@ -10,8 +10,12 @@
 #import "SDWebImageTestTransformer.h"
 #import "SDWebImageTestCache.h"
 #import "SDWebImageTestLoader.h"
+#if !SD_VISION
 #if __has_include(<SDWebImageWebPCoder/SDWebImageWebPCoder.h>)
 #import <SDWebImageWebPCoder/SDWebImageWebPCoder.h>
+#else
+@import SDWebImageWebPCoder;
+#endif
 #endif
 
 // Keep strong references for object
@@ -646,7 +650,7 @@
     [self waitForExpectationsWithCommonTimeout];
 }
 
-#if __has_include(<SDWebImageWebPCoder/SDWebImageWebPCoder.h>)
+#if !SD_VISION
 - (void)test22ThatForceDecodePolicyAlways {
     XCTestExpectation *expectation = [self expectationWithDescription:@"Always policy with WebP image (libwebp) should force-decode"];
     NSURL *url = [NSURL URLWithString:@"https://www.gstatic.com/webp/gallery/4.webp"];