Added LRU cache to fix out of memory issues with color caching

Examples/UIExplorer/UIExplorerUnitTests/RCTConvert_UIFontTests.m

@@ -1,4 +1,16 @@
-// Copyright 2004-present Facebook. All Rights Reserved.
+/**
+ * The examples provided by Facebook are for non-commercial testing and
+ * evaluation purposes only.
+ *
+ * Facebook reserves all rights not expressly granted.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+ * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NON INFRINGEMENT. IN NO EVENT SHALL
+ * FACEBOOK BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
+ * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
 
 #import <XCTest/XCTest.h>
 
@@ -174,7 +186,7 @@
     RCTAssertEqualFonts(expected, result);
   }
   {
-    UIFont *expected = [UIFont boldSystemFontOfSize:14];
+    UIFont *expected = [UIFont systemFontOfSize:14 weight:UIFontWeightBold];
     UIFont *result = [RCTConvert UIFont:@{@"fontFamily": @"foobar", @"fontWeight": @"bold"}];
     RCTAssertEqualFonts(expected, result);
   }