XfermodeTest.cpp revision 0a2bf90dccba3bde188e0386a7f0c60e6dde1ae9 
1/*
2 * Copyright 2011 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 "SkColor.h"
9#include "SkXfermode.h"
10#include "Test.h"
11
12static SkPMColor bogusXfermodeProc(SkPMColor src, SkPMColor dst) {
13    return 42;
14}
15
16#define ILLEGAL_MODE    ((SkXfermode::Mode)-1)
17
18static void test_asMode(skiatest::Reporter* reporter) {
19    for (int mode = 0; mode <= SkXfermode::kLastMode; mode++) {
20        SkXfermode* xfer = SkXfermode::Create((SkXfermode::Mode) mode);
21
22        SkXfermode::Mode reportedMode = ILLEGAL_MODE;
23        REPORTER_ASSERT(reporter, reportedMode != mode);
24
25        // test IsMode
26        REPORTER_ASSERT(reporter, SkXfermode::AsMode(xfer, &reportedMode));
27        REPORTER_ASSERT(reporter, reportedMode == mode);
28
29        // repeat that test, but with asMode instead
30        if (xfer) {
31            reportedMode = (SkXfermode::Mode) -1;
32            REPORTER_ASSERT(reporter, xfer->asMode(&reportedMode));
33            REPORTER_ASSERT(reporter, reportedMode == mode);
34            xfer->unref();
35        } else {
36            REPORTER_ASSERT(reporter, SkXfermode::kSrcOver_Mode == mode);
37        }
38    }
39
40    SkXfermode* bogusXfer = SkProcXfermode::Create(bogusXfermodeProc);
41    SkXfermode::Mode reportedMode = ILLEGAL_MODE;
42    REPORTER_ASSERT(reporter, !bogusXfer->asMode(&reportedMode));
43    REPORTER_ASSERT(reporter, reportedMode == ILLEGAL_MODE);
44    REPORTER_ASSERT(reporter, !SkXfermode::AsMode(bogusXfer, &reportedMode));
45    REPORTER_ASSERT(reporter, reportedMode == ILLEGAL_MODE);
46    bogusXfer->unref();
47}
48
49static void test_IsMode(skiatest::Reporter* reporter) {
50    REPORTER_ASSERT(reporter, SkXfermode::IsMode(NULL,
51                                                 SkXfermode::kSrcOver_Mode));
52
53    for (int i = 0; i <= SkXfermode::kLastMode; ++i) {
54        SkXfermode::Mode mode = (SkXfermode::Mode)i;
55
56        SkXfermode* xfer = SkXfermode::Create(mode);
57        REPORTER_ASSERT(reporter, SkXfermode::IsMode(xfer, mode));
58        SkSafeUnref(xfer);
59
60        if (SkXfermode::kSrcOver_Mode != mode) {
61            REPORTER_ASSERT(reporter, !SkXfermode::IsMode(NULL, mode));
62        }
63    }
64}
65
66DEF_TEST(Xfermode, reporter) {
67    test_asMode(reporter);
68    test_IsMode(reporter);
69}
70