tests/ParseColorTest.cpp

/*
 * Copyright 2020 Google LLC
 *
 * Use of this source code is governed by a BSD-style license that can be
 * found in the LICENSE file.
 */

#include "include/core/SkColor.h"
#include "include/core/SkString.h"
#include "include/utils/SkParse.h"
#include "tests/Test.h"

#include <cstring>

static constexpr struct {
    const char* fName;
    SkColor     fColor;
} gNamedColors[] = {
    { "aliceblue",            0xfff0f8ff },
    { "antiquewhite",         0xfffaebd7 },
    { "aqua",                 0xff00ffff },
    { "aquamarine",           0xff7fffd4 },
    { "azure",                0xfff0ffff },
    { "beige",                0xfff5f5dc },
    { "bisque",               0xffffe4c4 },
    { "black",                0xff000000 },
    { "blanchedalmond",       0xffffebcd },
    { "blue",                 0xff0000ff },
    { "blueviolet",           0xff8a2be2 },
    { "brown",                0xffa52a2a },
    { "burlywood",            0xffdeb887 },
    { "cadetblue",            0xff5f9ea0 },
    { "chartreuse",           0xff7fff00 },
    { "chocolate",            0xffd2691e },
    { "coral",                0xffff7f50 },
    { "cornflowerblue",       0xff6495ed },
    { "cornsilk",             0xfffff8dc },
    { "crimson",              0xffdc143c },
    { "cyan",                 0xff00ffff },
    { "darkblue",             0xff00008b },
    { "darkcyan",             0xff008b8b },
    { "darkgoldenrod",        0xffb8860b },
    { "darkgray",             0xffa9a9a9 },
    { "darkgreen",            0xff006400 },
    { "darkkhaki",            0xffbdb76b },
    { "darkmagenta",          0xff8b008b },
    { "darkolivegreen",       0xff556b2f },
    { "darkorange",           0xffff8c00 },
    { "darkorchid",           0xff9932cc },
    { "darkred",              0xff8b0000 },
    { "darksalmon",           0xffe9967a },
    { "darkseagreen",         0xff8fbc8f },
    { "darkslateblue",        0xff483d8b },
    { "darkslategray",        0xff2f4f4f },
    { "darkturquoise",        0xff00ced1 },
    { "darkviolet",           0xff9400d3 },
    { "deeppink",             0xffff1493 },
    { "deepskyblue",          0xff00bfff },
    { "dimgray",              0xff696969 },
    { "dodgerblue",           0xff1e90ff },
    { "firebrick",            0xffb22222 },
    { "floralwhite",          0xfffffaf0 },
    { "forestgreen",          0xff228b22 },
    { "fuchsia",              0xffff00ff },
    { "gainsboro",            0xffdcdcdc },
    { "ghostwhite",           0xfff8f8ff },
    { "gold",                 0xffffd700 },
    { "goldenrod",            0xffdaa520 },
    { "gray",                 0xff808080 },
    { "green",                0xff008000 },
    { "greenyellow",          0xffadff2f },
    { "honeydew",             0xfff0fff0 },
    { "hotpink",              0xffff69b4 },
    { "indianred",            0xffcd5c5c },
    { "indigo",               0xff4b0082 },
    { "ivory",                0xfffffff0 },
    { "khaki",                0xfff0e68c },
    { "lavender",             0xffe6e6fa },
    { "lavenderblush",        0xfffff0f5 },
    { "lawngreen",            0xff7cfc00 },
    { "lemonchiffon",         0xfffffacd },
    { "lightblue",            0xffadd8e6 },
    { "lightcoral",           0xfff08080 },
    { "lightcyan",            0xffe0ffff },
    { "lightgoldenrodyellow", 0xfffafad2 },
    { "lightgreen",           0xff90ee90 },
    { "lightgrey",            0xffd3d3d3 },
    { "lightpink",            0xffffb6c1 },
    { "lightsalmon",          0xffffa07a },
    { "lightseagreen",        0xff20b2aa },
    { "lightskyblue",         0xff87cefa },
    { "lightslategray",       0xff778899 },
    { "lightsteelblue",       0xffb0c4de },
    { "lightyellow",          0xffffffe0 },
    { "lime",                 0xff00ff00 },
    { "limegreen",            0xff32cd32 },
    { "linen",                0xfffaf0e6 },
    { "magenta",              0xffff00ff },
    { "maroon",               0xff800000 },
    { "mediumaquamarine",     0xff66cdaa },
    { "mediumblue",           0xff0000cd },
    { "mediumorchid",         0xffba55d3 },
    { "mediumpurple",         0xff9370db },
    { "mediumseagreen",       0xff3cb371 },
    { "mediumslateblue",      0xff7b68ee },
    { "mediumspringgreen",    0xff00fa9a },
    { "mediumturquoise",      0xff48d1cc },
    { "mediumvioletred",      0xffc71585 },
    { "midnightblue",         0xff191970 },
    { "mintcream",            0xfff5fffa },
    { "mistyrose",            0xffffe4e1 },
    { "moccasin",             0xffffe4b5 },
    { "navajowhite",          0xffffdead },
    { "navy",                 0xff000080 },
    { "oldlace",              0xfffdf5e6 },
    { "olive",                0xff808000 },
    { "olivedrab",            0xff6b8e23 },
    { "orange",               0xffffa500 },
    { "orangered",            0xffff4500 },
    { "orchid",               0xffda70d6 },
    { "palegoldenrod",        0xffeee8aa },
    { "palegreen",            0xff98fb98 },
    { "paleturquoise",        0xffafeeee },
    { "palevioletred",        0xffdb7093 },
    { "papayawhip",           0xffffefd5 },
    { "peachpuff",            0xffffdab9 },
    { "peru",                 0xffcd853f },
    { "pink",                 0xffffc0cb },
    { "plum",                 0xffdda0dd },
    { "powderblue",           0xffb0e0e6 },
    { "purple",               0xff800080 },
    { "red",                  0xffff0000 },
    { "rosybrown",            0xffbc8f8f },
    { "royalblue",            0xff4169e1 },
    { "saddlebrown",          0xff8b4513 },
    { "salmon",               0xfffa8072 },
    { "sandybrown",           0xfff4a460 },
    { "seagreen",             0xff2e8b57 },
    { "seashell",             0xfffff5ee },
    { "sienna",               0xffa0522d },
    { "silver",               0xffc0c0c0 },
    { "skyblue",              0xff87ceeb },
    { "slateblue",            0xff6a5acd },
    { "slategray",            0xff708090 },
    { "snow",                 0xfffffafa },
    { "springgreen",          0xff00ff7f },
    { "steelblue",            0xff4682b4 },
    { "tan",                  0xffd2b48c },
    { "teal",                 0xff008080 },
    { "thistle",              0xffd8bfd8 },
    { "tomato",               0xffff6347 },
    { "turquoise",            0xff40e0d0 },
    { "violet",               0xffee82ee },
    { "wheat",                0xfff5deb3 },
    { "white",                0xffffffff },
    { "whitesmoke",           0xfff5f5f5 },
    { "yellow",               0xffffff00 },
    { "yellowgreen",          0xff9acd32 },
};

static bool is_valid_name(const SkString& name) {
    for (const auto& c : gNamedColors) {
        if (name.equals(c.fName)) return true;
    }
    return false;
}

DEF_TEST(ParseNamedColor, reporter) {
    SkColor color;

    for (const auto& c : gNamedColors) {
        // check the real name
        REPORTER_ASSERT(reporter, SkParse::FindNamedColor(c.fName , strlen(c.fName), &color)
                                                       == c.fName + strlen(c.fName));
        REPORTER_ASSERT(reporter, color == c.fColor);

        // check partial prefixes
        for (int l = strlen(c.fName) - 1; l >= 0; --l) {
            SkString s(c.fName, l);
            // some substrings are valid color names
            if (is_valid_name(s)) continue;

            REPORTER_ASSERT(reporter, SkParse::FindNamedColor(s.c_str(), l, &color) == nullptr);
        }

        // check suffixes
        SkString s(c.fName, strlen(c.fName));
        s.append("A");
        REPORTER_ASSERT(reporter, SkParse::FindNamedColor(s.c_str(), s.size(), &color) == nullptr);
    }

    // some oddballs
    REPORTER_ASSERT(reporter, SkParse::FindNamedColor(""   , 0, &color) == nullptr);
    REPORTER_ASSERT(reporter, SkParse::FindNamedColor("aaa", 3, &color) == nullptr);
    REPORTER_ASSERT(reporter, SkParse::FindNamedColor("zzz", 3, &color) == nullptr);
    REPORTER_ASSERT(reporter, SkParse::FindNamedColor("aaaaaaaaaaaa", 12, &color) == nullptr);
    REPORTER_ASSERT(reporter, SkParse::FindNamedColor("zzzzzzzzzzzz", 12, &color) == nullptr);
}