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author | Konstantin Käfer <mail@kkaefer.com> | 2018-06-11 14:02:15 +0200 |
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committer | Konstantin Käfer <mail@kkaefer.com> | 2018-06-12 17:18:22 +0200 |
commit | 5170b4689bcd677e45bea91725a825904658bc84 (patch) | |
tree | 1fb21e3bd6d0770d172ed4291c1b33539e2c6c17 /test | |
parent | 5429b035d8549dd18ae2c62a4499ebc6f575aa71 (diff) | |
download | qtlocation-mapboxgl-5170b4689bcd677e45bea91725a825904658bc84.tar.gz |
fix undefined behavior in LineAtlas::addDash
Diffstat (limited to 'test')
-rw-r--r-- | test/geometry/line_atlas.test.cpp | 31 |
1 files changed, 31 insertions, 0 deletions
diff --git a/test/geometry/line_atlas.test.cpp b/test/geometry/line_atlas.test.cpp new file mode 100644 index 0000000000..960e4ad7ad --- /dev/null +++ b/test/geometry/line_atlas.test.cpp @@ -0,0 +1,31 @@ +#include <mbgl/test/util.hpp> + +#include <mbgl/geometry/line_atlas.hpp> + +#include <random> + +using namespace mbgl; + +TEST(LineAtlas, Random) { + std::mt19937 generator(42); // Use the same seed for reproducible tests. + std::uniform_int_distribution<size_t> countDistribution(0, 12); + std::uniform_int_distribution<size_t> capStyleDistribution(0, 1); + std::normal_distribution<float> lengthDistribution(3, 5); + + for (size_t it = 0; it < 100; it++) { + LineAtlas atlas{ Size{ 128, 1024 } }; + std::vector<float> dasharray; + dasharray.reserve(8); + for (size_t j = 0; j < 100; j++) { + dasharray.resize(0); + const size_t count = countDistribution(generator); + for (size_t i = 0; i < count; i++) { + dasharray.push_back(lengthDistribution(generator)); + } + const LinePatternCap patternCap = + capStyleDistribution(generator) > 0 ? LinePatternCap::Round : LinePatternCap::Square; + + atlas.addDash(dasharray, patternCap); + } + } +} |