testfiles/src/svg-length-test.cpp

   1 // SPDX-License-Identifier: GPL-2.0-or-later
   2 /** @file
   3  * Test for SVG colors
   4  *//*
   5  * Authors: see git history
   6  *
   7  * Copyright (C) 2010 Authors
   8  * Released under GNU GPL v2+, read the file 'COPYING' for more information.
   9  */
  10 #include "svg/svg-length.h"
  11 #include "svg/svg.h"
  12
  13 #include <glib.h>
  14 #include <gtest/gtest.h>
  15
  16 namespace {
  17
  18 struct test_t
  19 {
  20     char const *str;
  21     SVGLength::Unit unit;
  22     float value;
  23     float computed;
  24 };
  25
  26 test_t absolute_tests[12] = {
  27     // clang-format off
  28     {"0",            SVGLength::NONE,   0        ,   0},
  29     {"1",            SVGLength::NONE,   1        ,   1},
  30     {"1.00001",      SVGLength::NONE,   1.00001  ,   1.00001},
  31     {"1px",          SVGLength::PX  ,   1        ,   1},
  32     {".1px",         SVGLength::PX  ,   0.1      ,   0.1},
  33     {"100pt",        SVGLength::PT  , 100        ,  400.0/3.0},
  34     {"1e2pt",        SVGLength::PT  , 100        ,  400.0/3.0},
  35     {"3pc",          SVGLength::PC  ,   3        ,  48},
  36     {"-3.5pc",       SVGLength::PC  ,  -3.5      ,  -3.5*16.0},
  37     {"1.2345678mm",  SVGLength::MM  ,   1.2345678,   1.2345678f*96.0/25.4}, // TODO: More precise constants? (a 7 digit constant when the default precision is 8 digits?)
  38     {"123.45678cm",  SVGLength::CM  , 123.45678  , 123.45678f*96.0/2.54},   // Note that svg_length_read is casting the result from g_ascii_strtod to float.
  39     {"73.162987in",  SVGLength::INCH,  73.162987 ,  73.162987f*96.0/1.00}
  40 };
  41
  42 test_t relative_tests[3] = {
  43     {"123em", SVGLength::EM,      123, 123. *  7.},
  44     {"123ex", SVGLength::EX,      123, 123. * 13.},
  45     {"123%",  SVGLength::PERCENT, 1.23, 1.23 * 19.}
  46     // clang-format on
  47 };
  48
  49 const char* fail_tests[8] = {
  50     "123 px",
  51     "123e",
  52     "123e+m",
  53     "123ec",
  54     "123pxt",
  55     "--123",
  56     "",
  57     "px"
  58 };
  59
  60 struct eq_test_t
  61 {
  62     char const *a;
  63     char const *b;
  64     bool equal;
  65 };
  66
  67 eq_test_t eq_tests[4] = {
  68     {"", "", true},
  69     {"1", "1", true},
  70     {"10mm", "10mm", true},
  71     {"20mm", "10mm", false},
  72 };
  73
  74 } // namespace
  75
  76 TEST(SvgLengthTest, testRead)
  77 {
  78     for (size_t i = 0; i < G_N_ELEMENTS(absolute_tests); i++) {
  79         SVGLength len;
  80         ASSERT_TRUE( len.read(absolute_tests[i].str)) << absolute_tests[i].str;
  81         ASSERT_EQ( len.unit, absolute_tests[i].unit) << absolute_tests[i].str;
  82         ASSERT_EQ( len.value, absolute_tests[i].value) << absolute_tests[i].str;
  83         ASSERT_EQ( len.computed, absolute_tests[i].computed) << absolute_tests[i].str;
  84     }
  85     for (size_t i = 0; i < G_N_ELEMENTS(relative_tests); i++) {
  86         SVGLength len;
  87         ASSERT_TRUE( len.read(relative_tests[i].str)) << relative_tests[i].str;
  88         len.update(7, 13, 19);
  89         ASSERT_EQ( len.unit, relative_tests[i].unit) << relative_tests[i].str;
  90         ASSERT_EQ( len.value, relative_tests[i].value) << relative_tests[i].str;
  91         ASSERT_EQ( len.computed, relative_tests[i].computed) << relative_tests[i].str;
  92     }
  93     for (size_t i = 0; i < G_N_ELEMENTS(fail_tests); i++) {
  94         SVGLength len;
  95         ASSERT_TRUE( !len.read(fail_tests[i])) << fail_tests[i];
  96     }
  97 }
  98
  99 TEST(SvgLengthTest, testReadOrUnset)
 100 {
 101     for (size_t i = 0; i < G_N_ELEMENTS(absolute_tests); i++) {
 102         SVGLength len;
 103         len.readOrUnset(absolute_tests[i].str);
 104         ASSERT_EQ( len.unit, absolute_tests[i].unit) << absolute_tests[i].str;
 105         ASSERT_EQ( len.value, absolute_tests[i].value) << absolute_tests[i].str;
 106         ASSERT_EQ( len.computed, absolute_tests[i].computed) << absolute_tests[i].str;
 107     }
 108     for (size_t i = 0; i < G_N_ELEMENTS(relative_tests); i++) {
 109         SVGLength len;
 110         len.readOrUnset(relative_tests[i].str);
 111         len.update(7, 13, 19);
 112         ASSERT_EQ( len.unit, relative_tests[i].unit) << relative_tests[i].str;
 113         ASSERT_EQ( len.value, relative_tests[i].value) << relative_tests[i].str;
 114         ASSERT_EQ( len.computed, relative_tests[i].computed) << relative_tests[i].str;
 115     }
 116     for (size_t i = 0; i < G_N_ELEMENTS(fail_tests); i++) {
 117         SVGLength len;
 118         len.readOrUnset(fail_tests[i], SVGLength::INCH, 123, 456);
 119         ASSERT_EQ( len.unit, SVGLength::INCH) << fail_tests[i];
 120         ASSERT_EQ( len.value, 123) << fail_tests[i];
 121         ASSERT_EQ( len.computed, 456) << fail_tests[i];
 122     }
 123 }
 124
 125 TEST(SvgLengthTest, testReadAbsolute)
 126 {
 127     for (size_t i = 0; i < G_N_ELEMENTS(absolute_tests); i++) {
 128         SVGLength len;
 129         ASSERT_TRUE( len.readAbsolute(absolute_tests[i].str)) << absolute_tests[i].str;
 130         ASSERT_EQ( len.unit, absolute_tests[i].unit) << absolute_tests[i].str;
 131         ASSERT_EQ( len.value, absolute_tests[i].value) << absolute_tests[i].str;
 132         ASSERT_EQ( len.computed, absolute_tests[i].computed) << absolute_tests[i].str;
 133     }
 134     for (size_t i = 0; i < G_N_ELEMENTS(relative_tests); i++) {
 135         SVGLength len;
 136         ASSERT_TRUE( !len.readAbsolute(relative_tests[i].str)) << relative_tests[i].str;
 137     }
 138     for (size_t i = 0; i < G_N_ELEMENTS(fail_tests); i++) {
 139         SVGLength len;
 140         ASSERT_TRUE( !len.readAbsolute(fail_tests[i])) << fail_tests[i];
 141     }
 142 }
 143
 144 TEST(SvgLengthTest, testToFromString)
 145 {
 146     SVGLength len;
 147     ASSERT_TRUE(len.fromString("10", "mm", 3.7795277));
 148     ASSERT_EQ(len.unit, SVGLength::NONE);
 149     ASSERT_EQ(len.write(), "10");
 150     ASSERT_EQ(len.toString("mm", 3.7795277), "10mm");
 151     ASSERT_EQ(len.toString("in", 3.7795277), "0.3937008in");
 152     ASSERT_EQ(len.toString("", 3.7795277), "37.795277");
 153 }
 154
 155 TEST(SvgLengthTest, testEquality)
 156 {
 157     for (size_t i = 0; i < G_N_ELEMENTS(eq_tests); i++) {
 158         SVGLength len_a;
 159         SVGLength len_b;
 160         len_a.read(eq_tests[i].a);
 161         len_b.read(eq_tests[i].b);
 162         if (eq_tests[i].equal) {
 163             ASSERT_TRUE(len_a == len_b) << eq_tests[i].a << " == " << eq_tests[i].b;
 164         } else {
 165             ASSERT_TRUE(len_a != len_b) << eq_tests[i].a << " != " << eq_tests[i].b;
 166         }
 167     }
 168 }
 169
 170 TEST(SvgLengthTest, testEnumMappedToString)
 171 {
 172     for (int i = (static_cast<int>(SVGLength::NONE) + 1); i <= static_cast<int>(SVGLength::LAST_UNIT); i++) {
 173         SVGLength::Unit target = static_cast<SVGLength::Unit>(i);
 174         // PX is a special case where we don't have a unit string
 175         if ((target != SVGLength::PX)) {
 176             gchar const *val = sp_svg_length_get_css_units(target);
 177             ASSERT_NE(val, "") << i;
 178         }
 179     }
 180 }
 181
 182 TEST(SvgLengthTest, testStringsAreValidSVG)
 183 {
 184     gchar const *valid[] = {"", "em", "ex", "px", "pt", "pc", "cm", "mm", "in", "%"};
 185     std::set<std::string> validStrings(valid, valid + G_N_ELEMENTS(valid));
 186     for (int i = (static_cast<int>(SVGLength::NONE) + 1); i <= static_cast<int>(SVGLength::LAST_UNIT); i++) {
 187         SVGLength::Unit target = static_cast<SVGLength::Unit>(i);
 188         gchar const *val = sp_svg_length_get_css_units(target);
 189         ASSERT_TRUE( validStrings.find(std::string(val)) != validStrings.end()) << i;
 190     }
 191 }
 192
 193 TEST(SvgLengthTest, testValidSVGStringsSupported)
 194 {
 195     // Note that "px" is omitted from the list, as it will be assumed to be so if not explicitly set.
 196     gchar const *valid[] = {"em", "ex", "pt", "pc", "cm", "mm", "in", "%"};
 197     std::set<std::string> validStrings(valid, valid + G_N_ELEMENTS(valid));
 198     for (int i = (static_cast<int>(SVGLength::NONE) + 1); i <= static_cast<int>(SVGLength::LAST_UNIT); i++) {
 199         SVGLength::Unit target = static_cast<SVGLength::Unit>(i);
 200         gchar const *val = sp_svg_length_get_css_units(target);
 201         std::set<std::string>::iterator iter = validStrings.find(std::string(val));
 202         if (iter != validStrings.end()) {
 203             validStrings.erase(iter);
 204         }
 205     }
 206     ASSERT_EQ(validStrings.size(), 0u) << validStrings.size();
 207 }
 208
 209 TEST(SvgLengthTest, testPlaces)
 210 {
 211     struct testd_t
 212     {
 213         char const *str;
 214         double val;
 215         int prec;
 216         int minexp;
 217     };
 218
 219     testd_t const precTests[] = {
 220         {"760", 761.92918978947023, 2, -8},
 221         {"761.9", 761.92918978947023, 4, -8},
 222     };
 223
 224     for (size_t i = 0; i < G_N_ELEMENTS(precTests); i++) {
 225         std::string buf;
 226         buf.append(sp_svg_number_write_de(precTests[i].val, precTests[i].prec, precTests[i].minexp));
 227         unsigned int retval = buf.length();
 228         ASSERT_EQ( retval, strlen(precTests[i].str)) << "Number of chars written";
 229         ASSERT_EQ( std::string(buf), std::string(precTests[i].str)) << "Numeric string written";
 230     }
 231 }
 232
 233 // TODO: More tests
 234
 235 // vim: filetype=cpp:expandtab:shiftwidth=4:softtabstop=4:fileencoding=utf-8:textwidth=99 :