harden and speed up path op unit tests

tests/PathOpsDQuadTest.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 "PathOpsTestCommon.h"
 #include "SkPathOpsQuad.h"
 #include "Test.h"
 
 static const SkDQuad tests[] = {
     {{{1, 1}, {2, 1}, {0, 2}}},
     {{{0, 0}, {1, 1}, {3, 1}}},
     {{{2, 0}, {1, 1}, {2, 2}}},
     {{{4, 0}, {0, 1}, {4, 2}}},
     {{{0, 0}, {0, 1}, {1, 1}}},
 };
@@ skipping 12 matching lines @@
     {2.2, 1},
     {1.5, 1.5},
     {1.1, 0.5},
 };
 
 static const size_t tests_count = SK_ARRAY_COUNT(tests);
 
 static void PathOpsDQuadTest(skiatest::Reporter* reporter) {
     for (size_t index = 0; index < tests_count; ++index) {
         const SkDQuad& quad = tests[index];
+        SkASSERT(ValidQuad(quad));
         bool result = quad.pointInHull(inPoint[index]);
         if (!result) {
             SkDebugf("%s [%d] expected in hull\n", __FUNCTION__, index);
             REPORTER_ASSERT(reporter, 0);
         }
         result = quad.pointInHull(outPoint[index]);
         if (result) {
             SkDebugf("%s [%d] expected outside hull\n", __FUNCTION__, index);
             REPORTER_ASSERT(reporter, 0);
         }
     }
 }
 
 #include "TestClassDef.h"
 DEFINE_TESTCLASS_SHORT(PathOpsDQuadTest)