testfiles/src/ui-util-test.cpp

   1 // SPDX-License-Identifier: GPL-2.0-or-later
   2 /**
   3  * @file
   4  * Test utilities from src/ui/
   5  */
   6 /*
   7  * Authors:
   8  *   Martin Owens
   9  *
  10  * Copyright (C) 2024 Authors
  11  *
  12  * Released under GNU GPL v2+, read the file 'COPYING' for more information.
  13  */
  14
  15 #include <gtest/gtest.h>
  16 #include "test-utils.h"
  17
  18 #include "ui/widget/canvas/util.h"
  19
  20 using namespace Inkscape::UI::Widget;
  21
  22 ::testing::AssertionResult Array3IsNear(std::array<float, 3> const &A, std::vector<double> const &B, double epsilon)
  23 {
  24     std::vector<double> av;
  25     for (auto v : A) {
  26         av.emplace_back((double)v);
  27     }
  28     return VectorIsNear(av, B, epsilon);
  29 }
  30
  31 TEST(UtilTest, CheckerboardDarken)
  32 {
  33     EXPECT_TRUE(Array3IsNear(checkerboard_darken(0x00000000), {0.08, 0.08, 0.08}, 0.01));
  34     EXPECT_TRUE(Array3IsNear(checkerboard_darken(0x00000080), {0.0398, 0.0398, 0.0398}, 0.01));
  35     EXPECT_TRUE(Array3IsNear(checkerboard_darken(0x000000ff), {0, 0, 0}, 0.01));
  36     EXPECT_TRUE(Array3IsNear(checkerboard_darken(0x00000080), {0.0398, 0.0398, 0.0398}, 0.01));
  37     EXPECT_TRUE(Array3IsNear(checkerboard_darken(0xffffff00), {0.92, 0.92, 0.92}, 0.01));
  38     EXPECT_TRUE(Array3IsNear(checkerboard_darken(0xffffffff), {1, 1, 1}, 0.01));
  39     EXPECT_TRUE(Array3IsNear(checkerboard_darken(0x80808000), {0.422, 0.422, 0.422}, 0.01));
  40     EXPECT_TRUE(Array3IsNear(checkerboard_darken(0x80808080), {0.462, 0.462, 0.462}, 0.01));
  41     EXPECT_TRUE(Array3IsNear(checkerboard_darken(0x808080ff), {0.502, 0.502, 0.502}, 0.01));
  42 }
  43
  44 // vim: filetype=cpp:expandtab:shiftwidth=4:softtabstop=4:fileencoding=utf-8:textwidth=99 :