diff options
author | Norbert Preining <norbert@preining.info> | 2019-09-02 13:46:59 +0900 |
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committer | Norbert Preining <norbert@preining.info> | 2019-09-02 13:46:59 +0900 |
commit | e0c6872cf40896c7be36b11dcc744620f10adf1d (patch) | |
tree | 60335e10d2f4354b0674ec22d7b53f0f8abee672 /dviware/dvisvgm/tests/ColorTest.cpp |
Initial commit
Diffstat (limited to 'dviware/dvisvgm/tests/ColorTest.cpp')
-rw-r--r-- | dviware/dvisvgm/tests/ColorTest.cpp | 214 |
1 files changed, 214 insertions, 0 deletions
diff --git a/dviware/dvisvgm/tests/ColorTest.cpp b/dviware/dvisvgm/tests/ColorTest.cpp new file mode 100644 index 0000000000..36acfe4a16 --- /dev/null +++ b/dviware/dvisvgm/tests/ColorTest.cpp @@ -0,0 +1,214 @@ +/************************************************************************* +** ColorTest.cpp ** +** ** +** This file is part of dvisvgm -- a fast DVI to SVG converter ** +** Copyright (C) 2005-2019 Martin Gieseking <martin.gieseking@uos.de> ** +** ** +** This program is free software; you can redistribute it and/or ** +** modify it under the terms of the GNU General Public License as ** +** published by the Free Software Foundation; either version 3 of ** +** the License, or (at your option) any later version. ** +** ** +** This program is distributed in the hope that it will be useful, but ** +** WITHOUT ANY WARRANTY; without even the implied warranty of ** +** MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the ** +** GNU General Public License for more details. ** +** ** +** You should have received a copy of the GNU General Public License ** +** along with this program; if not, see <http://www.gnu.org/licenses/>. ** +*************************************************************************/ + +#include <gtest/gtest.h> +#include "Color.hpp" + +using namespace std; + +TEST(ColorTest, construct) { + EXPECT_EQ(Color(uint8_t(1), uint8_t(2), uint8_t(3)).rgbString(), "#010203"); + EXPECT_EQ(Color(1.0/255, 2.0/255, 3.0/255).rgbString(), "#010203"); + EXPECT_EQ(Color("Blue").rgbString(), "#00f"); + EXPECT_EQ(Color("blue").rgbString(), "#00f"); + EXPECT_EQ(Color("invalid").rgbString(), "#000"); +} + + +TEST(ColorTest, gray) { + Color c; + c.setGray(10.0/255); + EXPECT_EQ(c.rgbString(), "#0a0a0a"); + c.setGray(uint8_t(15)); + EXPECT_EQ(c.rgbString(), "#0f0f0f"); +} + + +TEST(ColorTest, hsb) { + Color c; + c.setHSB(20.0/360, 0.75, 0.8); // i==0 + EXPECT_EQ(c.rgbString(), "#c63"); + c.setHSB(60.0/360, 0.75, 0.8); // i==1 + EXPECT_EQ(c.rgbString(), "#cc3"); + c.setHSB(120.0/360, 1.0, 1.0); // i==2 + EXPECT_EQ(c.rgbString(), "#0f0"); + c.setHSB(180.0/360, 1.0, 1.0); // i==3 + EXPECT_EQ(c.rgbString(), "#0ff"); + c.setHSB(240.0/360, 0.75, 0.8); // i==4 + EXPECT_EQ(c.rgbString(), "#33c"); + c.setHSB(300.0/360, 0.75, 0.8); // i==5 + EXPECT_EQ(c.rgbString(), "#c3c"); + c.setHSB(0.0, 1.0, 1.0); + EXPECT_EQ(c.rgbString(), "#f00"); + c.setHSB(20.0/360, 0, 0.2); // s==0 + EXPECT_EQ(c.rgbString(), "#333"); +} + + +TEST(ColorTest, cmyk) { + Color color; + color.setCMYK(0.5, 0.4, 0.6, 0.2); + EXPECT_EQ(color.rgbString(), "#667a52"); + double c, m, y, k; + color.setRGB(0.0, 0.0, 0.0); + color.getCMYK(c, m, y, k); + EXPECT_DOUBLE_EQ(c, 0.0); + EXPECT_DOUBLE_EQ(m, 0.0); + EXPECT_DOUBLE_EQ(y, 0.0); + EXPECT_DOUBLE_EQ(k, 1.0); + color.setRGB(1.0, 0.0, 0.0); + color.getCMYK(c, m, y, k); + EXPECT_DOUBLE_EQ(c, 0.0); + EXPECT_DOUBLE_EQ(m, 1.0); + EXPECT_DOUBLE_EQ(y, 1.0); + EXPECT_DOUBLE_EQ(k, 0.0); +} + + +TEST(ColorTest, name) { + Color c; + EXPECT_TRUE(c.setPSName("Magenta")); + EXPECT_EQ(c.rgbString(), "#f0f"); + EXPECT_FALSE(c.setPSName("mulberry")); + EXPECT_TRUE(c.setPSName("mulberry", false)); + EXPECT_EQ(c.rgbString(), "#a314f9"); + + EXPECT_FALSE(c.setPSName("#Magenta")); + EXPECT_FALSE(c.setPSName("#bcdefg")); + EXPECT_TRUE(c.setPSName("#abcdef")); + EXPECT_EQ(c.rgbString(), "#abcdef"); + EXPECT_TRUE(c.setPSName("#89A")); + EXPECT_EQ(c.rgbString(), "#00089a"); + EXPECT_TRUE(c.setPSName("#A98 \n ")); + EXPECT_EQ(c.rgbString(), "#000a98"); +} + + +TEST(ColorTest, getXYZ) { + Color c; + double x, y, z; + c.setRGB(1.0, 0, 0); + c.getXYZ(x, y, z); + EXPECT_NEAR(x, 0.412456, 0.000001); + EXPECT_NEAR(y, 0.212673, 0.000001); + EXPECT_NEAR(z, 0.019334, 0.000001); + + c.setRGB(0, 1.0, 0); + c.getXYZ(x, y, z); + EXPECT_NEAR(x, 0.357576, 0.000001); + EXPECT_NEAR(y, 0.715152, 0.000001); + EXPECT_NEAR(z, 0.119192, 0.000001); + + c.setRGB(0, 0, 1.0); + c.getXYZ(x, y, z); + EXPECT_NEAR(x, 0.180437, 0.000001); + EXPECT_NEAR(y, 0.072175, 0.000001); + EXPECT_NEAR(z, 0.950304, 0.000001); + + valarray<double> rgb(3), xyz(3); + rgb[0] = 0.2; + rgb[1] = 0.75; + rgb[2] = 0.9; + Color::RGB2XYZ(rgb, xyz); + EXPECT_NEAR(xyz[0], 0.342574, 0.000001); + EXPECT_NEAR(xyz[1], 0.437554, 0.000001); + EXPECT_NEAR(xyz[2], 0.811202, 0.000001); +} + + +TEST(ColorTest, getLab) { + Color c; + double l, a, b; + c.setRGB(1.0, 0, 0); + c.getLab(l, a, b); + EXPECT_NEAR(l, 53.2408, 0.0001); + EXPECT_NEAR(a, 80.0925, 0.0001); + EXPECT_NEAR(b, 67.2032, 0.0001); + + c.setRGB(0, 1.0, 0); + c.getLab(l, a, b); + EXPECT_NEAR(l, 87.7347, 0.0001); + EXPECT_NEAR(a, -86.1827, 0.0001); + EXPECT_NEAR(b, 83.1793, 0.0001); + + c.setRGB(0, 0, 1.0); + c.getLab(l, a, b); + EXPECT_NEAR(l, 32.2970, 0.0001); + EXPECT_NEAR(a, 79.1875, 0.0001); + EXPECT_NEAR(b, -107.8602, 0.0001); + + valarray<double> rgb(3), lab(3); + rgb[0] = 0.2; + rgb[1] = 0.75; + rgb[2] = 0.9; + Color::RGB2Lab(rgb, lab); + EXPECT_NEAR(lab[0], 72.0647, 0.0001); + EXPECT_NEAR(lab[1], -23.7597, 0.0001); + EXPECT_NEAR(lab[2], -29.4733, 0.0001); +} + + +TEST(ColorTest, svgColorString) { + EXPECT_EQ(Color(uint32_t(0x000000)).svgColorString(false), "black"); + EXPECT_EQ(Color(uint32_t(0xffffff)).svgColorString(false), "white"); + EXPECT_EQ(Color(uint32_t(0xff0000)).svgColorString(false), "red"); + EXPECT_EQ(Color(uint32_t(0x9400d3)).svgColorString(false), "darkviolet"); + EXPECT_EQ(Color(uint32_t(0x000001)).svgColorString(false), "#000001"); + + EXPECT_EQ(Color(uint32_t(0x000000)).svgColorString(true), "#000"); + EXPECT_EQ(Color(uint32_t(0xffffff)).svgColorString(true), "#fff"); + EXPECT_EQ(Color(uint32_t(0xff0000)).svgColorString(true), "#f00"); + EXPECT_EQ(Color(uint32_t(0x9400d3)).svgColorString(true), "#9400d3"); + EXPECT_EQ(Color(uint32_t(0x000001)).svgColorString(true), "#000001"); +} + + +TEST(ColorTest, components) { + EXPECT_EQ(Color::numComponents(Color::ColorSpace::GRAY), 1); + EXPECT_EQ(Color::numComponents(Color::ColorSpace::RGB), 3); + EXPECT_EQ(Color::numComponents(Color::ColorSpace::LAB), 3); + EXPECT_EQ(Color::numComponents(Color::ColorSpace::CMYK), 4); +} + + +TEST(ColorTest, scale) { + EXPECT_EQ((Color(uint32_t(0x123456)) *= 0.0).rgbString(), "#000"); + EXPECT_EQ((Color(uint32_t(0x123456)) *= 1.0).rgbString(), "#123456"); + EXPECT_EQ((Color(uint32_t(0x123456)) *= 3.0).rgbString(), "#369d02"); + EXPECT_EQ((Color(uint32_t(0x123456)) *= 0.5).rgbString(), "#091a2b"); +} + + +TEST(ColorTest, set) { + Color color; + vector<double> vec{0.1, 0.2, 0.3, 0.4}; + VectorIterator<double> it(vec); + color.set(Color::ColorSpace::GRAY, it); + EXPECT_EQ(uint32_t(color), 0x1a1a1au); + it.reset(); + color.set(Color::ColorSpace::RGB, it); + EXPECT_EQ(uint32_t(color), 0x1a334du); + it.reset(); + color.set(Color::ColorSpace::CMYK, it); + EXPECT_EQ(uint32_t(color), 0x8a7a6bu); + it.reset(); + color.set(Color::ColorSpace::LAB, it); + EXPECT_EQ(uint32_t(color), 0x010000u); +} |