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#include <mbgl/test/util.hpp>
#include <mbgl/test/stub_file_source.hpp>
#include <mbgl/test/stub_style_observer.hpp>
#include <mbgl/text/glyph_set.hpp>
#include <mbgl/text/glyph_atlas.hpp>
#include <mbgl/util/run_loop.hpp>
#include <mbgl/util/string.hpp>
#include <mbgl/util/io.hpp>
#include <mbgl/util/logging.hpp>
using namespace mbgl;
class GlyphAtlasTest : public GlyphRequestor {
public:
util::RunLoop loop;
StubFileSource fileSource;
StubStyleObserver observer;
GlyphAtlas glyphAtlas{ { 32, 32 }, fileSource };
GlyphPositionMap glyphPositions;
GlyphRangeSet loadedRanges;
void run(const std::string& url, const FontStack& fontStack, const GlyphRangeSet& glyphRanges) {
// Squelch logging.
Log::setObserver(std::make_unique<Log::NullObserver>());
glyphAtlas.setObserver(&observer);
glyphAtlas.setURL(url);
GlyphDependencies glyphDependencies;
for (const auto& range : glyphRanges) {
glyphDependencies[fontStack].insert(range.first);
}
glyphAtlas.getGlyphs(*this, glyphDependencies);
glyphAtlas.hasGlyphRanges(fontStack, glyphRanges);
loop.run();
}
void addGlyphs(GlyphRequestor& requestor, const GlyphDependencies& glyphDependencies) {
glyphAtlas.addGlyphs(requestor, glyphDependencies);
}
bool hasGlyphRanges(const FontStack& fontStack, const GlyphRangeSet& ranges) const {
return glyphAtlas.hasGlyphRanges(fontStack, ranges);
}
void end() {
loop.stop();
}
virtual void onGlyphsAvailable(GlyphPositionMap positions, GlyphRangeSet _loadedRanges) {
glyphPositions = std::move(positions);
loadedRanges = std::move(_loadedRanges);
}
};
TEST(GlyphAtlas, LoadingSuccess) {
GlyphAtlasTest test;
test.fileSource.glyphsResponse = [&] (const Resource& resource) {
EXPECT_EQ(Resource::Kind::Glyphs, resource.kind);
Response response;
response.data = std::make_shared<std::string>(util::read_file("test/fixtures/resources/glyphs.pbf"));
return response;
};
test.observer.glyphsError = [&] (const FontStack&, const GlyphRange&, std::exception_ptr) {
FAIL();
test.end();
};
test.observer.glyphsLoaded = [&] (const FontStack&, const GlyphRange&) {
if (!test.hasGlyphRanges({{"Test Stack"}}, {{0, 255}, {256, 511}}))
return;
auto& glyphSet = test.glyphAtlas.getGlyphSet({{"Test Stack"}});
ASSERT_FALSE(glyphSet.getSDFs().empty());
test.end();
};
test.run(
"test/fixtures/resources/glyphs.pbf",
{{"Test Stack"}},
{{0, 255}, {256, 511}});
}
TEST(GlyphAtlas, LoadingFail) {
GlyphAtlasTest test;
test.fileSource.glyphsResponse = [&] (const Resource&) {
Response response;
response.error = std::make_unique<Response::Error>(
Response::Error::Reason::Other,
"Failed by the test case");
return response;
};
test.observer.glyphsError = [&] (const FontStack& fontStack, const GlyphRange& glyphRange, std::exception_ptr error) {
EXPECT_EQ(fontStack, FontStack({"Test Stack"}));
EXPECT_EQ(glyphRange, GlyphRange(0, 255));
EXPECT_TRUE(error != nullptr);
EXPECT_EQ(util::toString(error), "Failed by the test case");
ASSERT_TRUE(test.glyphAtlas.getGlyphSet({{"Test Stack"}}).getSDFs().empty());
ASSERT_FALSE(test.hasGlyphRanges({{"Test Stack"}}, {{0, 255}}));
test.end();
};
test.run(
"test/fixtures/resources/glyphs.pbf",
{{"Test Stack"}},
{{0, 255}});
}
TEST(GlyphAtlas, LoadingCorrupted) {
GlyphAtlasTest test;
test.fileSource.glyphsResponse = [&] (const Resource&) {
Response response;
response.data = std::make_unique<std::string>("CORRUPTED");
return response;
};
test.observer.glyphsError = [&] (const FontStack& fontStack, const GlyphRange& glyphRange, std::exception_ptr error) {
EXPECT_EQ(fontStack, FontStack({"Test Stack"}));
EXPECT_EQ(glyphRange, GlyphRange(0, 255));
EXPECT_TRUE(error != nullptr);
EXPECT_EQ(util::toString(error), "unknown pbf field type exception");
ASSERT_TRUE(test.glyphAtlas.getGlyphSet({{"Test Stack"}}).getSDFs().empty());
ASSERT_FALSE(test.hasGlyphRanges({{"Test Stack"}}, {{0, 255}}));
test.end();
};
test.run(
"test/fixtures/resources/glyphs.pbf",
{{"Test Stack"}},
{{0, 255}});
}
TEST(GlyphAtlas, LoadingCancel) {
GlyphAtlasTest test;
test.fileSource.glyphsResponse = [&] (const Resource&) {
test.end();
return optional<Response>();
};
test.observer.glyphsLoaded = [&] (const FontStack&, const GlyphRange&) {
FAIL() << "Should never be called";
};
test.run(
"test/fixtures/resources/glyphs.pbf",
{{"Test Stack"}},
{{0, 255}});
}
TEST(GlyphAtlas, InvalidSDFGlyph) {
const FontStack fontStack{ "Mock Font" };
GlyphAtlasTest test;
auto& glyphSet = test.glyphAtlas.getGlyphSet(fontStack);
glyphSet.insert(66, SDFGlyph{ 66 /* ASCII 'B' */,
AlphaImage({7, 7}), /* correct */
{ 1 /* width */, 1 /* height */, 0 /* left */, 0 /* top */,
0 /* advance */ } });
glyphSet.insert(67, SDFGlyph{ 67 /* ASCII 'C' */,
AlphaImage({518, 8}), /* correct */
{ 512 /* width */, 2 /* height */, 0 /* left */, 0 /* top */,
0 /* advance */ } });
GlyphDependencies glyphDependencies = {{fontStack, {'A','B','C'}}};
test.addGlyphs(test, glyphDependencies);
GlyphPositions positions = test.glyphPositions[fontStack];
ASSERT_EQ(2u, positions.size());
// 'A' was not placed because not in the glyph set.
ASSERT_EQ(positions.end(), positions.find(65));
// 'B' was placed at the top left.
ASSERT_NE(positions.end(), positions.find(66));
// Width is 12 because actual dimensions are 1+6 pixels, with 1px border added, rounded up to
// the next multiple of 4.
ASSERT_EQ((Rect<uint16_t>{ 0, 0, 12, 12 }), positions[66].rect);
// 'C' was not placed because the width is too big.
ASSERT_NE(positions.end(), positions.find(67));
ASSERT_EQ((Rect<uint16_t>{ 0, 0, 0, 0 }), positions[67].rect);
}
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