BitmapTest.cpp revision e2eac8b2fd8966cc9af51f8d40151dad6c591d2e 
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 "SkBitmap.h"
9
10#include "Test.h"
11
12static void test_bigwidth(skiatest::Reporter* reporter) {
13    SkBitmap bm;
14    int width = 1 << 29;    // *4 will be the high-bit of 32bit int
15
16    REPORTER_ASSERT(reporter, bm.setConfig(SkBitmap::kA8_Config, width, 1));
17    REPORTER_ASSERT(reporter, bm.setConfig(SkBitmap::kRGB_565_Config, width, 1));
18
19    // for a 4-byte config, this width will compute a rowbytes of 0x80000000,
20    // which does not fit in a int32_t. setConfig should detect this, and fail.
21
22    // TODO: perhaps skia can relax this, and only require that rowBytes fit
23    //       in a uint32_t (or larger), but for now this is the constraint.
24
25    REPORTER_ASSERT(reporter, !bm.setConfig(SkBitmap::kARGB_8888_Config, width, 1));
26}
27
28/**
29 *  This test contains basic sanity checks concerning bitmaps.
30 */
31DEF_TEST(Bitmap, reporter) {
32    const SkBitmap::Config conf = SkBitmap::kARGB_8888_Config;
33    // Zero-sized bitmaps are allowed
34    for (int width = 0; width < 2; ++width) {
35        for (int height = 0; height < 2; ++height) {
36            SkBitmap bm;
37            bool setConf = bm.setConfig(conf, width, height);
38            REPORTER_ASSERT(reporter, setConf);
39            if (setConf) {
40                REPORTER_ASSERT(reporter, bm.allocPixels(NULL));
41            }
42            REPORTER_ASSERT(reporter, SkToBool(width & height) != bm.empty());
43        }
44    }
45
46    test_bigwidth(reporter);
47}
48