add conics to path ops

tests/PathOpsExtendedTest.cpp

 /*
  * Copyright 2012 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #include "PathOpsExtendedTest.h"
 #include "PathOpsThreadedCommon.h"
 #include "SkBitmap.h"
@@ skipping 535 matching lines @@
 bool testPathOpCheck(skiatest::Reporter* reporter, const SkPath& a, const SkPath& b,
         const SkPathOp shapeOp, const char* testName, bool checkFail) {
     return innerPathOp(reporter, a, b, shapeOp, testName, false, checkFail);
 }
 
 bool testPathFailOp(skiatest::Reporter* reporter, const SkPath& a, const SkPath& b,
                  const SkPathOp shapeOp, const char* testName) {
 #if DEBUG_SHOW_TEST_NAME
     showName(a, b, shapeOp);
 #endif
-    SkPath out;
+    SkPath orig;
+    orig.lineTo(54, 43);
+    SkPath out = orig;
     if (Op(a, b, shapeOp, &out) ) {
         SkDebugf("%s test is expected to fail\n", __FUNCTION__);
         REPORTER_ASSERT(reporter, 0);
         return false;
     }
+    SkASSERT(out == orig);
     return true;
 }
 
 bool testThreadedPathOp(skiatest::Reporter* reporter, const SkPath& a, const SkPath& b,
                  const SkPathOp shapeOp, const char* testName) {
     return innerPathOp(reporter, a, b, shapeOp, testName, true, true);
 }
 
 SK_DECLARE_STATIC_MUTEX(gMutex);
 
@@ skipping 77 matching lines @@
         if (tests[index].fun == stopTest) {
             SkDebugf("lastTest\n");
             break;
         }
         if (index == last) {
             break;
         }
         index += reverse ? -1 : 1;
     } while (true);
 }