1 /* 2 * Copyright 2013 Google Inc. 3 * 4 * Use of this source code is governed by a BSD-style license that can be 5 * found in the LICENSE file. 6 */ 7 8 #include "SkBitmapHasher.h" 9 10 #include "SkBitmap.h" 11 #include "SkColor.h" 12 #include "Test.h" 13 14 // Word size that is large enough to hold results of any checksum type. 15 typedef uint64_t checksum_result; 16 17 // Fill in bitmap with test data. 18 static void CreateTestBitmap(SkBitmap* bitmap, int width, int height, 19 SkColor color, skiatest::Reporter* reporter) { 20 bitmap->allocN32Pixels(width, height, kOpaque_SkAlphaType); 21 bitmap->eraseColor(color); 22 } 23 24 DEF_TEST(BitmapHasher, reporter) { 25 // Test SkBitmapHasher 26 SkBitmap bitmap; 27 uint64_t digest; 28 // initial test case 29 CreateTestBitmap(&bitmap, 333, 555, SK_ColorBLUE, reporter); 30 REPORTER_ASSERT(reporter, SkBitmapHasher::ComputeDigest(bitmap, &digest)); 31 REPORTER_ASSERT(reporter, digest == 0xfb2903562766ef87ULL); 32 // same pixel data but different dimensions should yield a different checksum 33 CreateTestBitmap(&bitmap, 555, 333, SK_ColorBLUE, reporter); 34 REPORTER_ASSERT(reporter, SkBitmapHasher::ComputeDigest(bitmap, &digest)); 35 REPORTER_ASSERT(reporter, digest == 0xfe04023fb97d0f61ULL); 36 // same dimensions but different color should yield a different checksum 37 CreateTestBitmap(&bitmap, 555, 333, SK_ColorGREEN, reporter); 38 REPORTER_ASSERT(reporter, SkBitmapHasher::ComputeDigest(bitmap, &digest)); 39 REPORTER_ASSERT(reporter, digest == 0x2423c51cad6d1edcULL); 40 } 41
