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#define BOOST_TEST_MODULE test_text
#include "test-helpers.hpp"
#include <boost/test/data/test_case.hpp>
#include <boost/test/unit_test.hpp>
#include <stream_support.hpp>
#include <ui/font.h>
struct FontTest : public Font {
FontTest() : Font {"/usr/share/fonts/corefonts/arial.ttf", 48} { }
};
BOOST_TEST_DONT_PRINT_LOG_VALUE(Font::CharData);
using TextureSizeTestData = std::tuple<unsigned, unsigned, unsigned>;
BOOST_DATA_TEST_CASE(fontTextureSize, boost::unit_test::data::make<unsigned>({2, 3, 10, 50, 250}), fontHeight)
{
auto isPowerOfTwo = [](auto x) {
return (x & (x - 1)) == 0;
};
const auto res = Font::getTextureSize(fontHeight);
// Power of 2 dimensions...
BOOST_CHECK(isPowerOfTwo(res.x));
BOOST_CHECK(isPowerOfTwo(res.y));
// No bigger than max texture size...
BOOST_CHECK_LE(res.x, GL_MAX_TEXTURE_SIZE);
BOOST_CHECK_LE(res.y, GL_MAX_TEXTURE_SIZE);
// Big enough to hold the raster...
BOOST_CHECK_GE(res.y, 8); // Sensible minimum
BOOST_CHECK_GE(res.y, fontHeight);
// Keep the requested size
BOOST_CHECK_EQUAL(res.z, fontHeight);
}
BOOST_FIXTURE_TEST_SUITE(ft, FontTest);
BOOST_AUTO_TEST_CASE(initialize_chardata)
{
BOOST_CHECK_GE(charsData.size(), 72);
BOOST_CHECK_EQUAL(fontTextures.size(), 2);
}
using CharDataTest = std::tuple<char, Font::CharData>;
BOOST_DATA_TEST_CASE(initialize_chardata_A,
boost::unit_test::data::make<CharDataTest>({
{'A', {0, {34, 35}, {627, 0}, {-1, 35}, 32}},
{'I', {0, {6, 35}, {862, 0}, {4, 35}, 13}},
{'j', {0, {11, 45}, {1656, 0}, {-3, 35}, 11}},
{'o', {0, {24, 27}, {1748, 0}, {1, 27}, 27}},
}),
character, expected)
{
const auto & cd = charsData.at(character);
BOOST_CHECK_EQUAL(cd.textureIdx, expected.textureIdx);
BOOST_CHECK_EQUAL(cd.size, expected.size);
BOOST_CHECK_EQUAL(cd.position, expected.position);
BOOST_CHECK_EQUAL(cd.bearing, expected.bearing);
BOOST_CHECK_EQUAL(cd.advance, expected.advance);
}
static_assert(glm::vec2 {862, 0} / glm::vec2 {2048, 64} == glm::vec2 {0.4208984375, 0});
static_assert(glm::vec2 {866, 35} / glm::vec2 {2048, 64} == glm::vec2 {0.4228515625, 0.546875});
BOOST_AUTO_TEST_CASE(render_text)
{
constexpr std::string_view text {"I Like Trains"};
const auto spaces = std::count_if(text.begin(), text.end(), isspace);
const auto tqs = render(text);
BOOST_REQUIRE_EQUAL(tqs.size(), 1);
const auto & t1 = tqs.begin();
BOOST_CHECK_EQUAL(t1->first, fontTextures.front().texture);
const auto & v = t1->second;
BOOST_CHECK_EQUAL(v.size(), text.size() - spaces);
BOOST_TEST_CONTEXT(size) {
// I
BOOST_CHECK_CLOSE_VEC(v[0][0], glm::vec4(4, 0, 0.42, 0.54));
BOOST_CHECK_CLOSE_VEC(v[0][1], glm::vec4(10, 0, 0.42, 0.54));
BOOST_CHECK_CLOSE_VEC(v[0][2], glm::vec4(10, 35, 0.42, 0));
BOOST_CHECK_CLOSE_VEC(v[0][3], glm::vec4(4, 35, 0.42, 0));
// (space, no glyph)
// L
BOOST_CHECK_CLOSE_VEC(v[1][0], glm::vec4(32, 0, 0.42, 0.54));
BOOST_CHECK_CLOSE_VEC(v[1][1], glm::vec4(54, 0, 0.42, 0.54));
BOOST_CHECK_CLOSE_VEC(v[1][2], glm::vec4(54, 35, 0.42, 0));
BOOST_CHECK_CLOSE_VEC(v[1][3], glm::vec4(32, 35, 0.42, 0));
}
}
BOOST_AUTO_TEST_SUITE_END()
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