Function TEST

snap_drawing/test/src/TextLayout_Tests.cpp:120–141

struct TextShaperTestContainer {
    Ref<TextShaper> textShaper;
    TextSegmentProperties segment;
    std::vector<TextSegmentProperties> segments;

    TextShaperTestContainer() : segment(false, 0, 0, TextScript::invalid()) {
        textShaper = TextShaper::make(true);
    }

    void resolveSingleSegmentTextProperties(std::string str, bool isRightToLeft, bool expectsResolvedAsRightToLeft) {
        resolveMultipleSegmentsTextProperties(str, isRightToLeft, expectsResolvedAsRightToLeft);
        ASSERT_EQ(static_cast<size_t>(1), segments.size());

        segment = segments[0];
    }

    void resolveMultipleSegmentsTextProperties(std::string str, bool isRightToLeft, bool expectsResolvedAsRightToLeft) {
        segments.clear();

        auto unicode = utf8ToUnicode(str);
        auto paragraphList = textShaper->resolveParagraphs(unicode.data(), unicode.size(), isRightToLeft);

        ASSERT_EQ(static_cast<size_t>(1), paragraphList.size());
        ASSERT_EQ(expectsResolvedAsRightToLeft, paragraphList[0].baseDirectionIsRightToLeft);

        for (const auto& segment : paragraphList[0].segments) {
            segments.emplace_back(segment);