Add 'submodules/AsyncDisplayKit/' from commit '02bedc12816e251ad71777f9d2578329b6d2bef6'

git-subtree-dir: submodules/AsyncDisplayKit
git-subtree-mainline: d06f423e0e
git-subtree-split: 02bedc1281

submodules/AsyncDisplayKit/Tests/ASTextKitCoreTextAdditionsTests.mm

@@ -0,0 +1,74 @@
+//
+//  ASTextKitCoreTextAdditionsTests.mm
+//  Texture
+//
+//  Copyright (c) Facebook, Inc. and its affiliates.  All rights reserved.
+//  Changes after 4/13/2017 are: Copyright (c) Pinterest, Inc.  All rights reserved.
+//  Licensed under Apache 2.0: http://www.apache.org/licenses/LICENSE-2.0
+//
+
+#import <CoreText/CoreText.h>
+
+#import <XCTest/XCTest.h>
+
+#import <AsyncDisplayKit/ASTextKitCoreTextAdditions.h>
+
+#if AS_ENABLE_TEXTNODE
+
+BOOL floatsCloseEnough(CGFloat float1, CGFloat float2) {
+  CGFloat epsilon = 0.00001;
+  return (fabs(float1 - float2) < epsilon);
+}
+
+@interface ASTextKitCoreTextAdditionsTests : XCTestCase
+
+@end
+
+@implementation ASTextKitCoreTextAdditionsTests
+
+- (void)testAttributeCleansing
+{
+  UIFont *font = [UIFont systemFontOfSize:12.0];
+  NSMutableAttributedString *testString = [[NSMutableAttributedString alloc] initWithString:@"Test" attributes:@{NSFontAttributeName:font}];
+  CFRange cfRange = CFRangeMake(0, testString.length);
+  CGColorRef blueColor = CGColorRetain([UIColor blueColor].CGColor);
+  CFAttributedStringSetAttribute((CFMutableAttributedStringRef)testString,
+                                 cfRange,
+                                 kCTForegroundColorAttributeName,
+                                 blueColor);
+  UIColor *color = [UIColor colorWithCGColor:blueColor];
+
+  NSAttributedString *actualCleansedString = ASCleanseAttributedStringOfCoreTextAttributes(testString);
+  XCTAssertTrue([[actualCleansedString attribute:NSForegroundColorAttributeName atIndex:0 effectiveRange:NULL] isEqual:color], @"Expected the %@ core text attribute to be cleansed from the string %@\n Should match %@", kCTForegroundColorFromContextAttributeName, actualCleansedString, color);
+  CGColorRelease(blueColor);
+}
+
+- (void)testNoAttributeCleansing
+{
+  NSMutableAttributedString *testString = [[NSMutableAttributedString alloc] initWithString:@"Test" attributes:@{NSFontAttributeName:[UIFont systemFontOfSize:12.0],
+                                                                                                                 NSForegroundColorAttributeName : [UIColor blueColor]}];
+
+  NSAttributedString *actualCleansedString = ASCleanseAttributedStringOfCoreTextAttributes(testString);
+  XCTAssertTrue([testString isEqualToAttributedString:actualCleansedString], @"Expected the output string %@ to be the same as the input %@ if there are no core text attributes", actualCleansedString, testString);
+}
+
+- (void)testNSParagraphStyleNoCleansing
+{
+  NSMutableParagraphStyle *paragraphStyle = [[NSMutableParagraphStyle alloc] init];
+  paragraphStyle.lineSpacing = 10.0;
+
+  //NSUnderlineStyleAttributeName flags the unsupported CT attribute check
+  NSDictionary *attributes = @{NSParagraphStyleAttributeName:paragraphStyle,
+                               NSUnderlineStyleAttributeName:@(NSUnderlineStyleSingle)};
+
+  NSAttributedString *attributedString = [[NSAttributedString alloc] initWithString:@"Test" attributes:attributes];
+  NSAttributedString *cleansedString = ASCleanseAttributedStringOfCoreTextAttributes(attributedString);
+
+  NSParagraphStyle *cleansedParagraphStyle = [cleansedString attribute:NSParagraphStyleAttributeName atIndex:0 effectiveRange:NULL];
+
+  XCTAssertTrue(floatsCloseEnough(cleansedParagraphStyle.lineSpacing, paragraphStyle.lineSpacing), @"Expected the output line spacing: %f to be equal to the input line spacing: %f", cleansedParagraphStyle.lineSpacing, paragraphStyle.lineSpacing);
+}
+
+@end
+
+#endif