harden and speed up path op unit tests

tests/PathOpsDTriangleTest.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 "SkPathOpsTriangle.h"
 #include "Test.h"
 
 static const SkDTriangle tests[] = {
     {{{2, 0}, {3, 1}, {2, 2}}},
     {{{3, 1}, {2, 2}, {1, 1}}},
     {{{3, 0}, {2, 1}, {3, 2}}},
 };
 
 static const SkDPoint inPoint[] = {
     {2.5, 1},
     {2, 1.5},
     {2.5, 1},
 };
 
 static const SkDPoint outPoint[] = {
     {3, 0},
     {2.5, 2},
     {2.5, 2},
 };
 
 static const size_t tests_count = SK_ARRAY_COUNT(tests);
 
 static void PathOpsTriangleUtilitiesTest(skiatest::Reporter* reporter) {
     for (size_t index = 0; index < tests_count; ++index) {
         const SkDTriangle& triangle = tests[index];
+        SkASSERT(ValidTriangle(triangle));
         bool result = triangle.contains(inPoint[index]);
         if (!result) {
             SkDebugf("%s [%d] expected point in triangle\n", __FUNCTION__, index);
             REPORTER_ASSERT(reporter, 0);
         }
         result = triangle.contains(outPoint[index]);
         if (result) {
             SkDebugf("%s [%d] expected point outside triangle\n", __FUNCTION__, index);
             REPORTER_ASSERT(reporter, 0);
         }
     }
 }
 
 #include "TestClassDef.h"
 DEFINE_TESTCLASS_SHORT(PathOpsTriangleUtilitiesTest)