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[core] Add more shaping unit test cases
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@zmiao
zmiao committed Oct 6, 2019
1 parent ddbd392 commit 1b97cc9
Showing 1 changed file with 183 additions and 29 deletions.
212 changes: 183 additions & 29 deletions test/text/shaping.test.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -50,11 +50,12 @@ TEST(Shaping, ZWSP) {
TaggedString string(u"中中\u200b中中\u200b中中\u200b中中中中中中\u200b中中", sectionOptions);
auto shaping = testGetShaping(string, 5);
ASSERT_EQ(shaping.lineCount, 3);
ASSERT_EQ(shaping.top, -36);
ASSERT_EQ(shaping.bottom, 36);
ASSERT_EQ(shaping.left, -63);
ASSERT_EQ(shaping.right, 63);
ASSERT_FLOAT_EQ(-36.0f, shaping.top);
ASSERT_FLOAT_EQ(36.0f, shaping.bottom);
ASSERT_FLOAT_EQ(-63.0f, shaping.left);
ASSERT_FLOAT_EQ(63.0f, shaping.right);
ASSERT_EQ(shaping.writingMode, WritingModeType::Horizontal);
ASSERT_FALSE(shaping.hasBaseline);
}

// 2 lines
Expand All @@ -64,11 +65,12 @@ TEST(Shaping, ZWSP) {
TaggedString string(u"中中\u200b中", sectionOptions);
auto shaping = testGetShaping(string, 1);
ASSERT_EQ(shaping.lineCount, 2);
ASSERT_EQ(shaping.top, -24);
ASSERT_EQ(shaping.bottom, 24);
ASSERT_EQ(shaping.left, -21);
ASSERT_EQ(shaping.right, 21);
ASSERT_FLOAT_EQ(-24.0f, shaping.top);
ASSERT_FLOAT_EQ(24.0f, shaping.bottom);
ASSERT_FLOAT_EQ(-21.0f, shaping.left);
ASSERT_FLOAT_EQ(21.0f, shaping.right);
ASSERT_EQ(shaping.writingMode, WritingModeType::Horizontal);
ASSERT_FALSE(shaping.hasBaseline);
}

// 1 line
Expand All @@ -77,32 +79,34 @@ TEST(Shaping, ZWSP) {
TaggedString string(u"中中\u200b", sectionOptions);
auto shaping = testGetShaping(string, 2);
ASSERT_EQ(shaping.lineCount, 1);
ASSERT_EQ(shaping.top, -12);
ASSERT_EQ(shaping.bottom, 12);
ASSERT_EQ(shaping.left, -21);
ASSERT_EQ(shaping.right, 21);
ASSERT_FLOAT_EQ(-12.0f, shaping.top);
ASSERT_FLOAT_EQ(12.0f, shaping.bottom);
ASSERT_FLOAT_EQ(-21.0f, shaping.left);
ASSERT_FLOAT_EQ(21.0f, shaping.right);
ASSERT_EQ(shaping.writingMode, WritingModeType::Horizontal);
ASSERT_EQ(2, shaping.positionedGlyphs.size());
EXPECT_FLOAT_EQ(-21, shaping.positionedGlyphs[0].x);
EXPECT_FLOAT_EQ(-17, shaping.positionedGlyphs[0].y);
EXPECT_FLOAT_EQ(0, shaping.positionedGlyphs[1].x);
EXPECT_FLOAT_EQ(-17, shaping.positionedGlyphs[1].y);
ASSERT_FLOAT_EQ(-21.0f, shaping.positionedGlyphs[0].x);
ASSERT_FLOAT_EQ(-17.0f, shaping.positionedGlyphs[0].y);
ASSERT_FLOAT_EQ(0.0f, shaping.positionedGlyphs[1].x);
ASSERT_FLOAT_EQ(-17.0f, shaping.positionedGlyphs[1].y);
ASSERT_FALSE(shaping.hasBaseline);
}

// 5 'new' lines.
{
TaggedString string(u"\u200b\u200b\u200b\u200b\u200b", sectionOptions);
auto shaping = testGetShaping(string, 1);
ASSERT_EQ(shaping.lineCount, 5);
ASSERT_EQ(shaping.top, -60);
ASSERT_EQ(shaping.bottom, 60);
ASSERT_EQ(shaping.left, 0);
ASSERT_EQ(shaping.right, 0);
ASSERT_FLOAT_EQ(-60.0f, shaping.top);
ASSERT_FLOAT_EQ(60.0f, shaping.bottom);
ASSERT_FLOAT_EQ(-0.0f, shaping.left);
ASSERT_FLOAT_EQ(0.0f, shaping.right);
ASSERT_EQ(shaping.writingMode, WritingModeType::Horizontal);
ASSERT_FALSE(shaping.hasBaseline);
}
}

TEST(Shaping, FontWithBaseline) {
TEST(Shaping, MixedFontsBothWithBaselines) {
Glyph glyph1;
glyph1.id = u'阳';
glyph1.metrics.width = 18;
Expand Down Expand Up @@ -163,15 +167,165 @@ TEST(Shaping, FontWithBaseline) {

auto shaping = testGetShaping(string, 5);
ASSERT_EQ(shaping.lineCount, 1);
ASSERT_EQ(shaping.top, -12);
ASSERT_EQ(shaping.bottom, 12);
ASSERT_EQ(shaping.left, -21);
ASSERT_EQ(shaping.right, 21);
ASSERT_FLOAT_EQ(-12.0f, shaping.top);
ASSERT_FLOAT_EQ(12.0f, shaping.bottom);
ASSERT_FLOAT_EQ(-21.0f, shaping.left);
ASSERT_FLOAT_EQ(21.0f, shaping.right);
ASSERT_EQ(shaping.writingMode, WritingModeType::Horizontal);
ASSERT_EQ(2, shaping.positionedGlyphs.size());
EXPECT_FLOAT_EQ(-21, shaping.positionedGlyphs[0].x);
EXPECT_FLOAT_EQ(-16, shaping.positionedGlyphs[0].y);
EXPECT_FLOAT_EQ(0, shaping.positionedGlyphs[1].x);
EXPECT_FLOAT_EQ(-15, shaping.positionedGlyphs[1].y);
ASSERT_FLOAT_EQ(-21.0f, shaping.positionedGlyphs[0].x);
ASSERT_FLOAT_EQ(-16.0f, shaping.positionedGlyphs[0].y);
ASSERT_FLOAT_EQ(0.0f, shaping.positionedGlyphs[1].x);
ASSERT_FLOAT_EQ(-15.0f, shaping.positionedGlyphs[1].y);
ASSERT_TRUE(shaping.hasBaseline);
}
}

TEST(Shaping, MixedFontsOneWithBaselineOneWithout) {
Glyph glyph1;
glyph1.id = u'阳';
glyph1.metrics.width = 18;
glyph1.metrics.height = 19;
glyph1.metrics.left = 2;
glyph1.metrics.top = -8;
glyph1.metrics.advance = 21;

Glyph glyph2;
glyph2.id = u'光';
glyph2.metrics.width = 18;
glyph2.metrics.height = 18;
glyph2.metrics.left = 2;
glyph2.metrics.top = -8;
glyph2.metrics.advance = 21;

BiDi bidi;
std::vector<SectionOptions> sectionOptions;
const std::vector<std::string> fontStack1{{"font-stack1"}};
sectionOptions.emplace_back(1.0f, fontStack1);
Glyphs glyphData1;
glyphData1.glyphs.emplace(u'阳', Immutable<Glyph>(makeMutable<Glyph>(std::move(glyph1))));
glyphData1.ascender = 26;
glyphData1.descender = -6;

const std::vector<std::string> fontStack2{{"font-stack2"}};
sectionOptions.emplace_back(1.0f, fontStack2);
Glyphs glyphData2;
glyphData2.glyphs.emplace(u'光', Immutable<Glyph>(makeMutable<Glyph>(std::move(glyph2))));

GlyphMap glyphs;
glyphs.emplace(FontStackHasher()(fontStack1), std::move(glyphData1));
glyphs.emplace(FontStackHasher()(fontStack2), std::move(glyphData2));

const auto testGetShaping = [&](const TaggedString& string, unsigned maxWidthInChars) {
return getShaping(string,
maxWidthInChars * ONE_EM,
ONE_EM, // lineHeight
style::SymbolAnchorType::Center,
style::TextJustifyType::Center,
0, // spacing
{{0.0f, 0.0f}}, // translate
WritingModeType::Horizontal,
bidi,
glyphs,
/*allowVerticalPlacement*/ false);
};

{
std::u16string text{u"阳光\u200b"};
StyledText styledText;
styledText.second = std::vector<uint8_t>{0, 1, 0};
styledText.first = std::move(text);

TaggedString string{styledText, sectionOptions};

auto shaping = testGetShaping(string, 5);
ASSERT_EQ(shaping.lineCount, 1);
ASSERT_FLOAT_EQ(-12.0f, shaping.top);
ASSERT_FLOAT_EQ(12.0f, shaping.bottom);
ASSERT_FLOAT_EQ(-21.0f, shaping.left);
ASSERT_FLOAT_EQ(21.0f, shaping.right);
ASSERT_EQ(shaping.writingMode, WritingModeType::Horizontal);
ASSERT_EQ(2, shaping.positionedGlyphs.size());
ASSERT_FLOAT_EQ(-21.0f, shaping.positionedGlyphs[0].x);
ASSERT_FLOAT_EQ(-17.0f, shaping.positionedGlyphs[0].y);
ASSERT_FLOAT_EQ(0.0f, shaping.positionedGlyphs[1].x);
ASSERT_FLOAT_EQ(-17.0f, shaping.positionedGlyphs[1].y);
ASSERT_FALSE(shaping.hasBaseline);
}
}

TEST(Shaping, MixedFontsWithBaselineWithFontScale) {
Glyph glyph1;
glyph1.id = u'阳';
glyph1.metrics.width = 18;
glyph1.metrics.height = 19;
glyph1.metrics.left = 2;
glyph1.metrics.top = -8;
glyph1.metrics.advance = 21;

Glyph glyph2;
glyph2.id = u'光';
glyph2.metrics.width = 18;
glyph2.metrics.height = 18;
glyph2.metrics.left = 2;
glyph2.metrics.top = -8;
glyph2.metrics.advance = 21;

BiDi bidi;
std::vector<SectionOptions> sectionOptions;
const std::vector<std::string> fontStack1{{"font-stack1"}};
sectionOptions.emplace_back(1.0f, fontStack1);
sectionOptions.back().scale = 1.5;
Glyphs glyphData1;
glyphData1.glyphs.emplace(u'阳', Immutable<Glyph>(makeMutable<Glyph>(std::move(glyph1))));
glyphData1.ascender = 26;
glyphData1.descender = -6;

const std::vector<std::string> fontStack2{{"font-stack2"}};
sectionOptions.emplace_back(1.0f, fontStack2);
Glyphs glyphData2;
glyphData2.glyphs.emplace(u'光', Immutable<Glyph>(makeMutable<Glyph>(std::move(glyph2))));
glyphData2.ascender = 25;
glyphData2.descender = -5;

GlyphMap glyphs;
glyphs.emplace(FontStackHasher()(fontStack1), std::move(glyphData1));
glyphs.emplace(FontStackHasher()(fontStack2), std::move(glyphData2));

const auto testGetShaping = [&](const TaggedString& string, unsigned maxWidthInChars) {
return getShaping(string,
maxWidthInChars * ONE_EM,
ONE_EM, // lineHeight
style::SymbolAnchorType::Center,
style::TextJustifyType::Center,
0, // spacing
{{0.0f, 0.0f}}, // translate
WritingModeType::Horizontal,
bidi,
glyphs,
/*allowVerticalPlacement*/ false);
};

{
std::u16string text{u"阳光\u200b"};
StyledText styledText;
styledText.second = std::vector<uint8_t>{0, 1, 0};
styledText.first = std::move(text);

TaggedString string{styledText, sectionOptions};

auto shaping = testGetShaping(string, 5);
ASSERT_EQ(shaping.lineCount, 1);
ASSERT_FLOAT_EQ(-18.0f, shaping.top);
ASSERT_FLOAT_EQ(18.0f, shaping.bottom);
ASSERT_FLOAT_EQ(-26.25f, shaping.left);
ASSERT_FLOAT_EQ(26.25f, shaping.right);
ASSERT_EQ(shaping.writingMode, WritingModeType::Horizontal);
ASSERT_EQ(2, shaping.positionedGlyphs.size());
ASSERT_FLOAT_EQ(-26.25f, shaping.positionedGlyphs[0].x);
ASSERT_FLOAT_EQ(-24.0f, shaping.positionedGlyphs[0].y);
ASSERT_FLOAT_EQ(5.25f, shaping.positionedGlyphs[1].x);
ASSERT_FLOAT_EQ(-10.0f, shaping.positionedGlyphs[1].y);
ASSERT_TRUE(shaping.hasBaseline);
}
}

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