1
2/*
3 * Copyright 2011 Google Inc.
4 *
5 * Use of this source code is governed by a BSD-style license that can be
6 * found in the LICENSE file.
7 */
8// Unit tests for src/core/SkPoint.cpp and its header
9
10#include "SkPoint.h"
11#include "Test.h"
12
13// Tests that SkPoint::length() and SkPoint::Length() both return
14// approximately expectedLength for this (x,y).
15static void test_length(skiatest::Reporter* reporter, SkScalar x, SkScalar y,
16                        SkScalar expectedLength) {
17    SkPoint point;
18    point.set(x, y);
19    SkScalar s1 = point.length();
20    SkScalar s2 = SkPoint::Length(x, y);
21    //The following should be exactly the same, but need not be.
22    //See http://gcc.gnu.org/bugzilla/show_bug.cgi?id=323
23    REPORTER_ASSERT(reporter, SkScalarNearlyEqual(s1, s2));
24    REPORTER_ASSERT(reporter, SkScalarNearlyEqual(s1, expectedLength));
25}
26
27// Tests SkPoint::Normalize() for this (x,y)
28static void test_Normalize(skiatest::Reporter* reporter,
29                           SkScalar x, SkScalar y) {
30    SkPoint point;
31    point.set(x, y);
32    SkScalar oldLength = point.length();
33    SkScalar returned = SkPoint::Normalize(&point);
34    SkScalar newLength = point.length();
35    REPORTER_ASSERT(reporter, SkScalarNearlyEqual(returned, oldLength));
36    REPORTER_ASSERT(reporter, SkScalarNearlyEqual(newLength, SK_Scalar1));
37}
38
39static void PointTest(skiatest::Reporter* reporter) {
40    test_length(reporter, SkIntToScalar(3), SkIntToScalar(4), SkIntToScalar(5));
41    test_length(reporter, SkFloatToScalar(0.6f), SkFloatToScalar(0.8f),
42                SK_Scalar1);
43    test_Normalize(reporter, SkIntToScalar(3), SkIntToScalar(4));
44    test_Normalize(reporter, SkFloatToScalar(0.6f), SkFloatToScalar(0.8f));
45}
46
47#include "TestClassDef.h"
48DEFINE_TESTCLASS("Point", PointTestClass, PointTest)
49