1/*
2 * Copyright (C) 2014 Google Inc. All rights reserved.
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#include "platform/geometry/FloatBoxTestHelpers.h"
27
28#include "platform/geometry/FloatBox.h"
29const static float kTestEpsilon = 1e-6;
30
31void blink::PrintTo(const FloatBox& box, ::std::ostream* os)
32{
33    *os << "FloatBox("
34        << box.x() << ", "
35        << box.y() << ", "
36        << box.z() << ", "
37        << box.width() << ", "
38        << box.height() << ", "
39        << box.depth() << ")";
40}
41
42bool blink::FloatBoxTest::ApproximatelyEqual(const float& a, const float& b)
43{
44    float absA = ::fabs(a);
45    float absB = ::fabs(b);
46    float absErr = ::fabs(a - b);
47    if (a == b)
48        return true;
49
50    if (a == 0 || b == 0 || absErr < std::numeric_limits<float>::min())
51        return absErr < (kTestEpsilon * std::numeric_limits<float>::min());
52
53    return ((absErr / (absA + absB)) < kTestEpsilon);
54}
55
56bool blink::FloatBoxTest::ApproximatelyEqual(const FloatBox& a, const FloatBox& b)
57{
58    if (!ApproximatelyEqual(a.x(), b.x())
59        || !ApproximatelyEqual(a.y(), b.y())
60        || !ApproximatelyEqual(a.z(), b.z())
61        || !ApproximatelyEqual(a.width(), b.width())
62        || !ApproximatelyEqual(a.height(), b.height())
63        || !ApproximatelyEqual(a.depth(), b.depth())) {
64        return false;
65    }
66    return true;
67}
68
69::testing::AssertionResult blink::FloatBoxTest::AssertAlmostEqual(const char* m_expr, const char* n_expr, const FloatBox& m, const FloatBox& n)
70{
71    if (!ApproximatelyEqual(m, n)) {
72        return ::testing::AssertionFailure() << "       Value of:" << n_expr << std::endl
73            << "         Actual:" << testing::PrintToString(n) << std::endl
74            << "Expected Approx:" << m_expr << std::endl
75            << "       Which is:" << ::testing::PrintToString(m);
76    }
77    return ::testing::AssertionSuccess();
78}
79
80::testing::AssertionResult blink::FloatBoxTest::AssertContains(const char* m_expr, const char* n_expr, const FloatBox& m, const FloatBox& n)
81{
82    FloatBox newM = m;
83    newM.expandTo(n);
84    if (!ApproximatelyEqual(m, newM)) {
85        return ::testing::AssertionFailure() << "        Value of:" << n_expr << std::endl
86            << "          Actual:" << testing::PrintToString(n) << std::endl
87            << "Not Contained in:" << m_expr << std::endl
88            << "        Which is:" << ::testing::PrintToString(m);
89    }
90    return ::testing::AssertionSuccess();
91}
92
93
94