1/*
2 * Copyright (C) 2012 Koji Ishii <kojiishi@gmail.com>
3 *
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions
6 * are met:
7 * 1.  Redistributions of source code must retain the above copyright
8 *     notice, this list of conditions and the following disclaimer.
9 * 2.  Redistributions in binary form must reproduce the above copyright
10 *     notice, this list of conditions and the following disclaimer in the
11 *     documentation and/or other materials provided with the distribution.
12 *
13 * THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS'' AND ANY
14 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
15 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
16 * DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS BE LIABLE FOR ANY
17 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
18 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
19 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
20 * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
21 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
22 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
23 */
24
25#include "config.h"
26
27#if ENABLE(OPENTYPE_VERTICAL)
28
29#include <gtest/gtest.h>
30#include "core/platform/SharedBuffer.h"
31#include "core/platform/graphics/opentype/OpenTypeTypes.h"
32#include "wtf/RefPtr.h"
33
34using namespace WebCore;
35
36namespace {
37
38struct TestTable : OpenType::TableBase {
39    OpenType::Fixed version;
40    OpenType::Int16 ascender;
41
42    template <typename T> const T* validateOffset(const SharedBuffer& buffer, uint16_t offset) const
43    {
44        return TableBase::validateOffset<T>(buffer, offset);
45    }
46};
47
48TEST(OpenTypeVerticalDataTest, ValidateTableTest)
49{
50    RefPtr<SharedBuffer> buffer = SharedBuffer::create(sizeof(TestTable));
51    const TestTable* table = OpenType::validateTable<TestTable>(buffer);
52    EXPECT_TRUE(table);
53
54    buffer = SharedBuffer::create(sizeof(TestTable) - 1);
55    table = OpenType::validateTable<TestTable>(buffer);
56    EXPECT_FALSE(table);
57
58    buffer = SharedBuffer::create(sizeof(TestTable) + 1);
59    table = OpenType::validateTable<TestTable>(buffer);
60    EXPECT_TRUE(table);
61}
62
63TEST(OpenTypeVerticalDataTest, ValidateOffsetTest)
64{
65    RefPtr<SharedBuffer> buffer = SharedBuffer::create(sizeof(TestTable));
66    const TestTable* table = OpenType::validateTable<TestTable>(buffer);
67    ASSERT_TRUE(table);
68
69    // Test overflow
70    EXPECT_FALSE(table->validateOffset<uint8_t>(*buffer, -1));
71
72    // uint8_t is valid for all offsets
73    for (uint16_t offset = 0; offset < sizeof(TestTable); offset++)
74        EXPECT_TRUE(table->validateOffset<uint8_t>(*buffer, offset));
75    EXPECT_FALSE(table->validateOffset<uint8_t>(*buffer, sizeof(TestTable)));
76    EXPECT_FALSE(table->validateOffset<uint8_t>(*buffer, sizeof(TestTable) + 1));
77
78    // For uint16_t, the last byte is invalid
79    for (uint16_t offset = 0; offset < sizeof(TestTable) - 1; offset++)
80        EXPECT_TRUE(table->validateOffset<uint16_t>(*buffer, offset));
81    EXPECT_FALSE(table->validateOffset<uint16_t>(*buffer, sizeof(TestTable) - 1));
82}
83
84} // namespace
85
86#endif // ENABLE(OPENTYPE_VERTICAL)
87