src/third_party/skia/tests/DashPathEffectTest.cpp

   1 #include "Test.h"
   2
   3 #include "SkDashPathEffect.h"
   4 #include "SkWriteBuffer.h"
   5
   6 // crbug.com/348821 was rooted in SkDashPathEffect refusing to flatten and unflatten itself when
   7 // fInitialDashLength < 0 (a signal the effect is nonsense).  Here we test that it flattens.
   8
   9 DEF_TEST(DashPathEffectTest_crbug_348821, r) {
  10     SkScalar intervals[] = { 1.76934361e+36f, 2.80259693e-45f };  // Values from bug.
  11     const int count = 2;
  12     SkScalar phase = SK_ScalarInfinity;  // Used to force the bad fInitialDashLength = -1 path.
  13     SkAutoTUnref<SkDashPathEffect> dash(SkDashPathEffect::Create(intervals, count, phase));
  14
  15     // NULL -> refuses to work with flattening framework.
  16     REPORTER_ASSERT(r, dash->getFactory() != NULL);
  17
  18     SkWriteBuffer buffer;
  19     buffer.writeFlattenable(dash);
  20     REPORTER_ASSERT(r, buffer.bytesWritten() > 12);  // We'd write 12 if broken, >=40 if not.
  21 }