harden and speed up path op unit tests

tests/PathOpsCubicIntersectionTest.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 "PathOpsCubicIntersectionTestData.h"
 #include "PathOpsTestCommon.h"
 #include "SkIntersections.h"
 #include "SkPathOpsRect.h"
@@ skipping 250 matching lines @@
 {{{0, 6}, {1, 2}, {1, 0}, {1, 0}}},
 {{{0, 1}, {0, 1}, {6, 0}, {2, 1}}},
 
 {{{0, 2}, {0, 1}, {3, 0}, {1, 0}}},
 {{{0, 3}, {0, 1}, {2, 0}, {1, 0}}},
 };
 
 const size_t newTestSetCount = SK_ARRAY_COUNT(newTestSet);
 
 static void oneOff(skiatest::Reporter* reporter, const SkDCubic& cubic1, const SkDCubic& cubic2) {
+    SkASSERT(ValidCubic(cubic1));
+    SkASSERT(ValidCubic(cubic2));
 #if ONE_OFF_DEBUG
     SkDebugf("computed quadratics given\n");
     SkDebugf("  {{%1.9g,%1.9g}, {%1.9g,%1.9g}, {%1.9g,%1.9g}, {%1.9g,%1.9g}},\n",
         cubic1[0].fX, cubic1[0].fY, cubic1[1].fX, cubic1[1].fY,
         cubic1[2].fX, cubic1[2].fY, cubic1[3].fX, cubic1[3].fY);
     SkDebugf("  {{%1.9g,%1.9g}, {%1.9g,%1.9g}, {%1.9g,%1.9g}, {%1.9g,%1.9g}},\n",
         cubic2[0].fX, cubic2[0].fY, cubic2[1].fX, cubic2[1].fY,
         cubic2[2].fX, cubic2[2].fY, cubic2[3].fX, cubic2[3].fY);
 #endif
     SkTArray<SkDQuad, true> quads1;
@@ skipping 271 matching lines @@
     cubicIntersectionSelfTest(reporter);
     standardTestCases(reporter);
     if (false) CubicIntersection_IntersectionFinder();
     if (false) CubicIntersection_RandTest(reporter);
 }
 
 #include "TestClassDef.h"
 DEFINE_TESTCLASS_SHORT(PathOpsCubicIntersectionTest)
 
 DEFINE_TESTCLASS_SHORT(PathOpsCubicIntersectionOneOffTest)