harden and speed up path op unit tests

tests/PathOpsCubicLineIntersectionTest.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 "SkIntersections.h"
 #include "SkPathOpsCubic.h"
 #include "SkPathOpsLine.h"
 #include "SkReduceOrder.h"
 #include "Test.h"
 
 static struct lineCubic {
     SkDCubic cubic;
     SkDLine line;
 } lineCubicTests[] = {
 #if 0
     {{{{258, 122}, {260.761414, 122}, { 263, 124.238579}, {263, 127}}},
             {{{259.82843, 125.17157}, {261.535522, 123.46447}}}},
 #endif
     {{{{1006.6951293945312,291}, {1023.263671875,291}, {1033.8402099609375,304.43145751953125},
             {1030.318359375,321}}},
             {{{979.30487060546875,561}, {1036.695068359375,291}}}},
     {{{{259.30487060546875,561}, {242.73631286621094,561}, {232.15980529785156,547.56854248046875},
             {235.68154907226562,531}}},
             {{{286.69512939453125,291}, {229.30485534667969,561}}}},
     {{{{1, 2}, {2, 6}, {2, 0}, {1, 0}}}, {{{1, 0}, {1, 2}}}},
     {{{{0, 0}, {0, 1}, {0, 1}, {1, 1}}}, {{{0, 1}, {1, 0}}}},
 };
 
 static const size_t lineCubicTests_count = SK_ARRAY_COUNT(lineCubicTests);
 
 static void testOne(skiatest::Reporter* reporter, int iIndex) {
     const SkDCubic& cubic = lineCubicTests[iIndex].cubic;
+    SkASSERT(ValidCubic(cubic));
     const SkDLine& line = lineCubicTests[iIndex].line;
+    SkASSERT(ValidLine(line));
     SkReduceOrder reduce1;
     SkReduceOrder reduce2;
     int order1 = reduce1.reduce(cubic, SkReduceOrder::kNo_Quadratics,
             SkReduceOrder::kFill_Style);
     int order2 = reduce2.reduce(line);
     if (order1 < 4) {
         SkDebugf("[%d] cubic order=%d\n", iIndex, order1);
         REPORTER_ASSERT(reporter, 0);
     }
     if (order2 < 2) {
@@ skipping 47 matching lines @@
     SkDebugf("{{%1.9g,%1.9g}, {%1.9g,%1.9g}},\n", i.pt(0).fX, i.pt(0).fY, nextL.fX, nextL.fY);
     SkDebugf("prevD=%1.9g dist=%1.9g nextD=%1.9g\n", prev.distance(nextL),
             sect.distance(i.pt(0)), cubic[3].distance(prevL));
 #endif
 }
 
 #include "TestClassDef.h"
 DEFINE_TESTCLASS_SHORT(PathOpsCubicLineIntersectionTest)
 
 DEFINE_TESTCLASS_SHORT(PathOpsCubicLineIntersectionOneOffTest)