Update image equal checking

Kingfisher.xcodeproj/project.pbxproj

@@ -26,6 +26,9 @@
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 		4BCCF3421D5B02F8003387C2 /* ViewController.swift in Sources */ = {isa = PBXBuildFile; fileRef = 4BCCF33C1D5B02F8003387C2 /* ViewController.swift */; };
+		4BF806D71D752D4900C8DB13 /* ImageProcessorTests.swift in Sources */ = {isa = PBXBuildFile; fileRef = 4BF806D61D752D4900C8DB13 /* ImageProcessorTests.swift */; };
+		4BF806D81D752D4900C8DB13 /* ImageProcessorTests.swift in Sources */ = {isa = PBXBuildFile; fileRef = 4BF806D61D752D4900C8DB13 /* ImageProcessorTests.swift */; };
+		4BF806D91D752D4900C8DB13 /* ImageProcessorTests.swift in Sources */ = {isa = PBXBuildFile; fileRef = 4BF806D61D752D4900C8DB13 /* ImageProcessorTests.swift */; };
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 		D10945F71C526B86001408EB /* Image.swift in Sources */ = {isa = PBXBuildFile; fileRef = D10945EA1C526B6C001408EB /* Image.swift */; };
 		D10945F81C526B86001408EB /* ImageCache.swift in Sources */ = {isa = PBXBuildFile; fileRef = D10945EB1C526B6C001408EB /* ImageCache.swift */; };
@@ -279,6 +282,7 @@
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 		4BCCF33C1D5B02F8003387C2 /* ViewController.swift */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.swift; path = ViewController.swift; sourceTree = "<group>"; };
 		4BCCF3441D5B0457003387C2 /* Info.plist */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = text.plist.xml; path = Info.plist; sourceTree = "<group>"; };
+		4BF806D61D752D4900C8DB13 /* ImageProcessorTests.swift */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.swift; path = ImageProcessorTests.swift; sourceTree = "<group>"; };
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 		9D0E767B01589AA8BE21FFA6 /* libPods-KingfisherTests.a */ = {isa = PBXFileReference; explicitFileType = archive.ar; includeInIndex = 0; path = "libPods-KingfisherTests.a"; sourceTree = BUILT_PRODUCTS_DIR; };
@@ -540,6 +544,7 @@
 				D12E0C4A1C47F23500AC98AD /* KingfisherManagerTests.swift */,
 				D12E0C4B1C47F23500AC98AD /* KingfisherOptionsInfoTests.swift */,
 				D12E0C4C1C47F23500AC98AD /* KingfisherTestHelper.swift */,
+				4BF806D61D752D4900C8DB13 /* ImageProcessorTests.swift */,
 				D12E0C4D1C47F23500AC98AD /* KingfisherTests-Bridging-Header.h */,
 				D12E0C4E1C47F23500AC98AD /* UIButtonExtensionTests.swift */,
 				185218B51CC07F8300BD58DE /* NSButtonExtensionTests.swift */,
@@ -1419,6 +1424,7 @@
 			isa = PBXSourcesBuildPhase;
 			buildActionMask = 2147483647;
 			files = (
+				4BF806D81D752D4900C8DB13 /* ImageProcessorTests.swift in Sources */,
 				D12E0C761C47F71700AC98AD /* KingfisherTestHelper.swift in Sources */,
 				D12E0C6E1C47F6FE00AC98AD /* ImageCacheTests.swift in Sources */,
 				D12E0C6F1C47F6FE00AC98AD /* ImageDownloaderTests.swift in Sources */,
@@ -1436,6 +1442,7 @@
 			isa = PBXSourcesBuildPhase;
 			buildActionMask = 2147483647;
 			files = (
+				4BF806D91D752D4900C8DB13 /* ImageProcessorTests.swift in Sources */,
 				D12E0C891C47F7B700AC98AD /* KingfisherTestHelper.swift in Sources */,
 				185218B61CC07F8300BD58DE /* NSButtonExtensionTests.swift in Sources */,
 				D12E0C821C47F7AF00AC98AD /* ImageCacheTests.swift in Sources */,
@@ -1542,6 +1549,7 @@
 			isa = PBXSourcesBuildPhase;
 			buildActionMask = 2147483647;
 			files = (
+				4BF806D71D752D4900C8DB13 /* ImageProcessorTests.swift in Sources */,
 				D12E0C571C47F23500AC98AD /* KingfisherTestHelper.swift in Sources */,
 				D12E0C581C47F23500AC98AD /* UIButtonExtensionTests.swift in Sources */,
 				D12E0C561C47F23500AC98AD /* KingfisherOptionsInfoTests.swift in Sources */,

Tests/KingfisherTests/ImageProcessorTests.swift

@@ -0,0 +1,38 @@
+//
+//  ImageProcessorTests.swift
+//  Kingfisher
+//
+//  Created by WANG WEI on 2016/08/30.
+//  Copyright © 2016年 Wei Wang. All rights reserved.
+//
+
+import XCTest
+import Kingfisher
+
+class ImageProcessorTests: XCTestCase {
+    
+    override func setUp() {
+        super.setUp()
+        // Put setup code here. This method is called before the invocation of each test method in the class.
+    }
+    
+    override func tearDown() {
+        // Put teardown code here. This method is called after the invocation of each test method in the class.
+        super.tearDown()
+    }
+    
+    func testRenderEqual() {
+        let image1 = Image(data: testImageData! as Data)!
+        let image2 = Image(data: testImagePNGData)!
+        
+        XCTAssertTrue(image1.renderEqual(to: image2))
+    }
+    
+    func testPerformanceExample() {
+        // This is an example of a performance test case.
+        self.measure {
+            // Put the code you want to measure the time of here.
+        }
+    }
+    
+}