56aa7dad4f
- Add explanatory comment - Remove dead/unused Android test - Increase image diff threshold to .05 to accommodate slightly different versions of "PingFang" between different test platforms
87 lines
3.1 KiB
C++
87 lines
3.1 KiB
C++
#include <mbgl/test/util.hpp>
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#include <mbgl/test/stub_file_source.hpp>
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#include <mbgl/map/map.hpp>
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#include <mbgl/util/io.hpp>
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#include <mbgl/util/run_loop.hpp>
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#include <mbgl/util/color.hpp>
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#include <mbgl/renderer/renderer.hpp>
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#include <mbgl/gl/headless_frontend.hpp>
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#include <mbgl/util/default_thread_pool.hpp>
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#include <mbgl/style/style.hpp>
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/*
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LoadLocalCJKGlyph in glyph_manager.test.cpp exercises the platform-independent
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part of LocalGlyphRasterizer. This test actually exercises platform-dependent
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font loading code for whatever platform it runs on. Different platforms have
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different default fonts, so adding a new platform requires new "expected"
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fixtures.
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At the time of writing, we don't run `mbgl-test` on iOS or Android, so the only
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supported test platform is macOS. Supporting Android would require adding a new
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test case (probably using the "Droid" font family). iOS should theoretically
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work -- the "PingFang" font family used below is expected to be available on
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all iOS devices, and we use a relatively high image diff tolerance (0.05) to
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account for small changes between the many possible variants of the PingFang
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family.
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*/
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using namespace mbgl;
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namespace {
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class LocalGlyphRasterizerTest {
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public:
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LocalGlyphRasterizerTest(const optional<std::string> fontFamily)
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: frontend(pixelRatio, fileSource, threadPool, optional<std::string>(), GLContextMode::Unique, fontFamily)
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{
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}
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util::RunLoop loop;
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StubFileSource fileSource;
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ThreadPool threadPool { 4 };
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float pixelRatio { 1 };
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HeadlessFrontend frontend;
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Map map { frontend, MapObserver::nullObserver(), frontend.getSize(), pixelRatio, fileSource,
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threadPool, MapMode::Static};
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void checkRendering(const char * name) {
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test::checkImage(std::string("test/fixtures/local_glyphs/") + name,
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frontend.render(map), 0.05, 0.1);
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}
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};
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} // end namespace
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#ifdef __APPLE__
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TEST(LocalGlyphRasterizer, PingFang) {
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LocalGlyphRasterizerTest test(std::string("PingFang"));
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test.fileSource.glyphsResponse = [&] (const Resource& resource) {
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EXPECT_EQ(Resource::Kind::Glyphs, resource.kind);
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Response response;
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response.data = std::make_shared<std::string>(util::read_file("test/fixtures/resources/glyphs.pbf"));
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return response;
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};
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test.map.getStyle().loadJSON(util::read_file("test/fixtures/local_glyphs/mixed.json"));
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test.checkRendering("ping_fang");
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}
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#endif
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TEST(LocalGlyphRasterizer, NoLocal) {
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// Expectation: without any local fonts set, and without any CJK glyphs provided,
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// the output should just contain basic latin characters.
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LocalGlyphRasterizerTest test({});
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test.fileSource.glyphsResponse = [&] (const Resource& resource) {
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EXPECT_EQ(Resource::Kind::Glyphs, resource.kind);
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Response response;
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response.data = std::make_shared<std::string>(util::read_file("test/fixtures/resources/glyphs.pbf"));
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return response;
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};
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test.map.getStyle().loadJSON(util::read_file("test/fixtures/local_glyphs/mixed.json"));
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test.checkRendering("no_local");
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}
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