split tight quads and cubics

tests/PathOpsOpTest.cpp

Index: tests/PathOpsOpTest.cpp
diff --git a/tests/PathOpsOpTest.cpp b/tests/PathOpsOpTest.cpp
index 1a423043609ecd970424a04480019d88baef4e4b..aee9b07878174634ccd06e553e439db0f9b87499 100644
--- a/tests/PathOpsOpTest.cpp
+++ b/tests/PathOpsOpTest.cpp
@@ -5375,6 +5375,26 @@ static void cubicOp158(skiatest::Reporter* reporter, const char* filename) {
     testPathOp(reporter, path, pathB, kDifference_SkPathOp, filename);
 }
 
+static void loop17(skiatest::Reporter* reporter, const char* filename) {
+    SkPath path, pathB;
+    path.moveTo(1, 2);
+    path.cubicTo(0, 3, -0.333333343f, 3.33333325f, 0.833333373f, 3.5f);
+    path.close();
+    pathB.moveTo(0, 3);
+    pathB.cubicTo(-0.333333343f, 3.33333325f, 0.833333373f, 3.5f, 1, 2);
+    pathB.close();
+    testPathOp(reporter, path, pathB, kIntersect_SkPathOp, filename);
+}
+
+static void circlesOp4(skiatest::Reporter* reporter, const char* filename) {
+    SkPath path, pathB;
+    path.setFillType(SkPath::kWinding_FillType);
+    path.addCircle(0, 1, 5, SkPath::kCW_Direction);
+    pathB.setFillType(SkPath::kWinding_FillType);
+    pathB.addCircle(0, 1, 0, SkPath::kCW_Direction);
+    testPathOp(reporter, path, pathB, kDifference_SkPathOp, filename);
+}
+
 static void (*skipTest)(skiatest::Reporter* , const char* filename) = 0;
 static void (*firstTest)(skiatest::Reporter* , const char* filename) = 0;
 static void (*stopTest)(skiatest::Reporter* , const char* filename) = 0;
@@ -5382,6 +5402,8 @@ static void (*stopTest)(skiatest::Reporter* , const char* filename) = 0;
 #define TEST(name) { name, #name }
 
 static struct TestDesc tests[] = {
+    TEST(circlesOp4),
+    TEST(loop17),
     TEST(cubicOp158),
     TEST(loops_i1),
     TEST(loops_i2),