fix cubic linear test

tests/PathOpsOpTest.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 "PathOpsTestCommon.h"
 
 class PathTest_Private {
@@ skipping 5377 matching lines @@
 
 static void circlesOp4(skiatest::Reporter* reporter, const char* filename) {
     SkPath path, pathB;
     path.setFillType(SkPath::kWinding_FillType);
     path.addCircle(0, 1, 5, SkPath::kCW_Direction);
     pathB.setFillType(SkPath::kWinding_FillType);
     pathB.addCircle(0, 1, 0, SkPath::kCW_Direction);
     testPathOp(reporter, path, pathB, kDifference_SkPathOp, filename);
 }
 
+static void bug5240(skiatest::Reporter* reporter, const char* filename) {
+ SkPath path;
+path.moveTo(815, 82);
+path.cubicTo(814.4794311523438f, 82.7868881225586f, 814.5330810546875f,
+82.6266555786133f, 814.5291137695312f, 82.6252212524414f);
+path.cubicTo(814.5229492187500f, 82.6230010986328f, 814.3790283203125f,
+83.0008087158203f, 813.8533935546875f, 82.7072601318359f);
+path.close();
+    testPathOp(reporter, path, path, kUnion_SkPathOp, filename);
+}
+
 static void (*skipTest)(skiatest::Reporter* , const char* filename) = 0;
 static void (*firstTest)(skiatest::Reporter* , const char* filename) = 0;
 static void (*stopTest)(skiatest::Reporter* , const char* filename) = 0;
 
 #define TEST(name) { name, #name }
 
 static struct TestDesc tests[] = {
+    TEST(bug5240),
     TEST(circlesOp4),
     TEST(loop17),
     TEST(cubicOp158),
     TEST(loops_i1),
     TEST(loops_i2),
     TEST(loops_i3),
     TEST(loops_i4),
     TEST(loops_i5),
     TEST(loops_i6),
     TEST(cubics_d3),
@@ skipping 2597 matching lines @@
 }
 
 static struct TestDesc repTests[] = {
     TEST(fuzz763_5a),
 };
 
 DEF_TEST(PathOpsRepOp, reporter) {
   for (int index = 0; index < 1; ++index)
     RunTestSet(reporter, repTests, SK_ARRAY_COUNT(repTests), nullptr, nullptr, nullptr, false);
 }