Rename CK classes to AS classes

AsyncDisplayKitTests/ASTextKitCoreTextAdditionsTests.m

@@ -0,0 +1,48 @@
+/* Copyright (c) 2014-present, Facebook, Inc.
+ * All rights reserved.
+ *
+ * This source code is licensed under the BSD-style license found in the
+ * LICENSE file in the root directory of this source tree. An additional grant
+ * of patent rights can be found in the PATENTS file in the same directory.
+ */
+
+#import <CoreText/CoreText.h>
+
+#import <XCTest/XCTest.h>
+
+#import "ASTextKitCoreTextAdditions.h"
+
+@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);
+}
+
+
+@end