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 "SkReader32.h"
9#include "Test.h"
10
11static void assert_eof(skiatest::Reporter* reporter, const SkReader32& reader) {
12    REPORTER_ASSERT(reporter, reader.eof());
13    REPORTER_ASSERT(reporter, reader.size() == reader.offset());
14    REPORTER_ASSERT(reporter, (const char*)reader.peek() ==
15                    (const char*)reader.base() + reader.size());
16}
17
18static void assert_start(skiatest::Reporter* reporter, const SkReader32& reader) {
19    REPORTER_ASSERT(reporter, 0 == reader.offset());
20    REPORTER_ASSERT(reporter, reader.size() == reader.available());
21    REPORTER_ASSERT(reporter, reader.isAvailable(reader.size()));
22    REPORTER_ASSERT(reporter, !reader.isAvailable(reader.size() + 1));
23    REPORTER_ASSERT(reporter, reader.peek() == reader.base());
24}
25
26static void assert_empty(skiatest::Reporter* reporter, const SkReader32& reader) {
27    REPORTER_ASSERT(reporter, 0 == reader.size());
28    REPORTER_ASSERT(reporter, 0 == reader.offset());
29    REPORTER_ASSERT(reporter, 0 == reader.available());
30    REPORTER_ASSERT(reporter, !reader.isAvailable(1));
31    assert_eof(reporter, reader);
32    assert_start(reporter, reader);
33}
34
35DEF_TEST(Reader32, reporter) {
36    SkReader32 reader;
37    assert_empty(reporter, reader);
38    REPORTER_ASSERT(reporter, NULL == reader.base());
39    REPORTER_ASSERT(reporter, NULL == reader.peek());
40
41    size_t i;
42
43    const int32_t data[] = { 0, 1, 2, 3, 4, 5, 6, 7, 8, 9 };
44    const SkScalar data2[] = { 0, SK_Scalar1, -SK_Scalar1, SK_Scalar1/2 };
45    const size_t bufsize = sizeof(data) > sizeof(data2) ?
46      sizeof(data) : sizeof(data2);
47    char buffer[bufsize];
48
49    reader.setMemory(data, sizeof(data));
50    for (i = 0; i < SK_ARRAY_COUNT(data); ++i) {
51        REPORTER_ASSERT(reporter, sizeof(data) == reader.size());
52        REPORTER_ASSERT(reporter, i*4 == reader.offset());
53        REPORTER_ASSERT(reporter, (const void*)data == reader.base());
54        REPORTER_ASSERT(reporter, (const void*)&data[i] == reader.peek());
55        REPORTER_ASSERT(reporter, data[i] == reader.readInt());
56    }
57    assert_eof(reporter, reader);
58    reader.rewind();
59    assert_start(reporter, reader);
60    reader.read(buffer, sizeof(data));
61    REPORTER_ASSERT(reporter, !memcmp(data, buffer, sizeof(data)));
62
63    reader.setMemory(data2, sizeof(data2));
64    for (i = 0; i < SK_ARRAY_COUNT(data2); ++i) {
65        REPORTER_ASSERT(reporter, sizeof(data2) == reader.size());
66        REPORTER_ASSERT(reporter, i*4 == reader.offset());
67        REPORTER_ASSERT(reporter, (const void*)data2 == reader.base());
68        REPORTER_ASSERT(reporter, (const void*)&data2[i] == reader.peek());
69        REPORTER_ASSERT(reporter, data2[i] == reader.readScalar());
70    }
71    assert_eof(reporter, reader);
72    reader.rewind();
73    assert_start(reporter, reader);
74    reader.read(buffer, sizeof(data2));
75    REPORTER_ASSERT(reporter, !memcmp(data2, buffer, sizeof(data2)));
76
77    reader.setMemory(NULL, 0);
78    assert_empty(reporter, reader);
79    REPORTER_ASSERT(reporter, NULL == reader.base());
80    REPORTER_ASSERT(reporter, NULL == reader.peek());
81}
82