These tests stress pathops by describing the union of circle-like paths that have tiny line segments embedded and double back to create near-coincident conditions.

The fixes include
- detect when finding the active top loops between two possible answers
- preflight chasing winding to ensure answer is consistent
- binary search more often when quadratic intersection fails
- add more failure paths when an intersect is missed

While this fixes the chrome bug, reenabling path ops in svg should be deferred until additional fixes are landed.

TBR=
BUG=421132

Committed: https://skia.googlesource.com/skia/+/6f726addf3178b01949bb389ef83cf14a1d7b6b2

Review URL: https://codereview.chromium.org/633393002

1 files changed, 5 insertions, 3 deletions

diff --git a/tests/PathOpsExtendedTest.h b/tests/PathOpsExtendedTest.h
index 49ac80451c..5f7e972f49 100644
--- a/tests/PathOpsExtendedTest.h
+++ b/tests/PathOpsExtendedTest.h
@@ -30,11 +30,13 @@ extern int comparePaths(const SkPath& one, const SkPath& two, SkBitmap& bitmap);
 extern bool drawAsciiPaths(const SkPath& one, const SkPath& two, bool drawPaths);
 extern void showOp(const SkPathOp op);
 extern bool testPathOp(skiatest::Reporter* reporter, const SkPath& a, const SkPath& b,
-                        const SkPathOp , const char* testName);
+                       const SkPathOp , const char* testName);
+extern bool testPathOpCheck(skiatest::Reporter* reporter, const SkPath& a, const SkPath& b,
+                            const SkPathOp , const char* testName, bool checkFail);
 extern bool testPathFailOp(skiatest::Reporter* reporter, const SkPath& a, const SkPath& b,
-                        const SkPathOp , const char* testName);
+                           const SkPathOp , const char* testName);
 extern bool testThreadedPathOp(skiatest::Reporter* reporter, const SkPath& a, const SkPath& b,
-                        const SkPathOp , const char* testName);
+                               const SkPathOp , const char* testName);
 extern bool testSimplify(SkPath& path, bool useXor, SkPath& out, PathOpsThreadState& state,
                          const char* pathStr);
 extern bool testSimplify(skiatest::Reporter* reporter, const SkPath& path, const char* filename);