summaryrefslogtreecommitdiff
path: root/dviware/dvisvgm/tests/ColorTest.cpp
diff options
context:
space:
mode:
authorNorbert Preining <norbert@preining.info>2019-09-02 13:46:59 +0900
committerNorbert Preining <norbert@preining.info>2019-09-02 13:46:59 +0900
commite0c6872cf40896c7be36b11dcc744620f10adf1d (patch)
tree60335e10d2f4354b0674ec22d7b53f0f8abee672 /dviware/dvisvgm/tests/ColorTest.cpp
Initial commit
Diffstat (limited to 'dviware/dvisvgm/tests/ColorTest.cpp')
-rw-r--r--dviware/dvisvgm/tests/ColorTest.cpp214
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);
+}