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/*************************************************************************
** FontCacheTest.cpp **
** **
** This file is part of dvisvgm -- a fast DVI to SVG converter **
** Copyright (C) 2005-2025 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 <fstream>
#include <sstream>
#include "FileSystem.hpp"
#include "FontCache.hpp"
#ifndef BUILDDIR
#define BUILDDIR "."
#endif
using namespace std;
class LocalCache {
public:
LocalCache (const string &cachedir)
: _cachedir(cachedir),
_created(!FileSystem::exists(cachedir) && FileSystem::mkdir(cachedir))
{
}
~LocalCache () {
if (_created)
FileSystem::rmdir(_cachedir);
}
string cachedir () const {return _cachedir;}
private:
string _cachedir;
bool _created;
};
static LocalCache localCache(BUILDDIR"/data");
class FontCacheTest : public testing::Test {
protected:
FontCacheTest () : testing::Test(), cachedir(localCache.cachedir()) {
glyph1.moveto(0, 0);
glyph1.lineto(10, 0);
glyph1.lineto(10, 10);
glyph1.lineto(0, 10);
glyph1.closepath();
glyph2.moveto(0, 0);
glyph2.cubicto(10, 10, 20, 0, 50, 50);
glyph2.lineto(30, 20);
glyph2.quadto(20, 40, 20, 20);
glyph2.closepath();
}
~FontCacheTest () override {
FileSystem::remove(cachedir+"/testfont.fgd");
}
Glyph glyph1, glyph2;
FontCache cache;
string cachedir;
};
static string toSVG (const Glyph &glyph) {
ostringstream oss;
glyph.writeSVG(oss, false);
return oss.str();
}
TEST_F(FontCacheTest, glyph) {
EXPECT_EQ(toSVG(glyph1), "M0 0H10V10H0Z");
EXPECT_EQ(toSVG(glyph2), "M0 0C10 10 20 0 50 50L30 20Q20 40 20 20Z");
cache.setGlyph(1, glyph1);
cache.setGlyph(10, glyph2);
ASSERT_NE(cache.getGlyph(1), nullptr);
ASSERT_EQ(cache.getGlyph(2), nullptr);
ASSERT_NE(cache.getGlyph(10), nullptr);
ASSERT_EQ(*cache.getGlyph(1), glyph1);
ASSERT_EQ(*cache.getGlyph(10), glyph2);
}
TEST_F(FontCacheTest, write1) {
cache.setGlyph(1, glyph1);
ASSERT_TRUE(cache.fontname().empty());
ASSERT_FALSE(cache.write(cachedir));
}
TEST_F(FontCacheTest, write2) {
cache.setGlyph(1, glyph1);
ASSERT_TRUE(FileSystem::exists(cachedir));
ASSERT_TRUE(cache.write("testfont", cachedir));
cache.setGlyph(10, glyph2);
EXPECT_TRUE(cache.write("testfont", cachedir));
EXPECT_TRUE(cache.fontname().empty());
}
TEST_F(FontCacheTest, read) {
cache.setGlyph(1, glyph1);
cache.setGlyph(10, glyph2);
ASSERT_TRUE(cache.write("testfont", cachedir));
// clear cache object
cache.clear();
EXPECT_EQ(cache.getGlyph(1), nullptr);
EXPECT_EQ(cache.getGlyph(2), nullptr);
EXPECT_EQ(cache.getGlyph(10), nullptr);
// read glyph data from cache file
ASSERT_TRUE(cache.read("testfont", cachedir));
EXPECT_EQ(cache.fontname(), "testfont");
ASSERT_NE(cache.getGlyph(1), nullptr);
EXPECT_EQ(cache.getGlyph(2), nullptr);
ASSERT_NE(cache.getGlyph(10), nullptr);
EXPECT_EQ(*cache.getGlyph(1), glyph1);
EXPECT_EQ(*cache.getGlyph(10), glyph2);
}
TEST_F(FontCacheTest, fontinfo1) {
ostringstream oss;
cache.clear();
FileSystem::remove(cachedir+"/testfont.fgd");
cache.fontinfo(cachedir, oss);
ASSERT_EQ(oss.str(), "cache is empty\n");
// check removal of invalid cache files
ofstream cachefile(cachedir+"/invalid.fgd");
cachefile << "invalid cache file";
cachefile.close();
ASSERT_TRUE(FileSystem::exists(cachedir+"/invalid.fgd"));
oss.str("");
cache.fontinfo(cachedir, oss, true);
ASSERT_EQ(oss.str(),
"cache is empty\n"
"invalid cache file invalid.fgd removed\n"
);
ASSERT_FALSE(FileSystem::exists(cachedir+"/invalid.fgd"));
}
TEST_F(FontCacheTest, fontinfo2) {
cache.setGlyph(1, glyph1);
cache.setGlyph(10, glyph2);
ASSERT_TRUE(cache.write("testfont", cachedir));
ostringstream oss;
cache.fontinfo(cachedir, oss);
ASSERT_EQ(oss.str(),
"cache format version 5\n"
"testfont 2 glyphs 10 cmds 58 bytes hash:3cb32ab6\n"
);
}
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