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Unified Diff: cc/resources/layer_quad_unittest.cc

Issue 1028333002: Chromium -> Mojo roll. (Closed) Base URL: https://github.com/domokit/mojo.git@master
Patch Set: Created 5 years, 9 months ago
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Index: cc/resources/layer_quad_unittest.cc
diff --git a/cc/resources/layer_quad_unittest.cc b/cc/resources/layer_quad_unittest.cc
index 3560b8d379e674773a8ed3198229db7e8ed4cbd8..90f61bedd78f3ea77bf834f923ebc52112893ec1 100644
--- a/cc/resources/layer_quad_unittest.cc
+++ b/cc/resources/layer_quad_unittest.cc
@@ -38,5 +38,32 @@ TEST(LayerQuadTest, Inflate) {
EXPECT_EQ(layer_quad.ToQuadF(), quad);
}
+TEST(LayerQuadTest, Degenerate) {
+ gfx::QuadF quad;
+ gfx::PointF p1(1.0f, 1.0f);
+ gfx::PointF p2(0.0f, 1.0f);
+ gfx::PointF p3(1.0f, 0.0f);
+ gfx::QuadF triangle(p1, p2, p3, p1);
+
+ LayerQuad::Edge e1d(p1, p1);
+ LayerQuad::Edge e2d(p2, p2);
+ LayerQuad::Edge e2(p1, p2);
+ LayerQuad::Edge e3(p2, p3);
+ LayerQuad::Edge e4(p3, p1);
+ EXPECT_TRUE(e1d.degenerate());
+ EXPECT_TRUE(e2d.degenerate());
+ EXPECT_FALSE(e2.degenerate());
+ EXPECT_FALSE(e3.degenerate());
+ EXPECT_FALSE(e4.degenerate());
+
+ LayerQuad degenerate_quad(e1d, e2d, e2, e3);
+ // With more than one degenerate edge, we expect the quad to be zero.
+ EXPECT_EQ(quad, degenerate_quad.ToQuadF());
+
+ LayerQuad triangle_quad(e1d, e2, e3, e4);
+ // With only one degenerate edge, we expect the quad to be a triangle.
+ EXPECT_EQ(triangle, triangle_quad.ToQuadF());
+}
+
} // namespace
} // namespace cc
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