submodule/skia/tests/InfRectTest.cpp

   1 /*
   2  * Copyright 2011 Google Inc.
   3  *
   4  * Use of this source code is governed by a BSD-style license that can be
   5  * found in the LICENSE file.
   6  */
   7
   8 #include "include/core/SkRect.h"
   9 #include "include/private/SkFloatingPoint.h"
  10 #include "include/utils/SkRandom.h"
  11 #include "tests/Test.h"
  12
  13 static void check_invalid(skiatest::Reporter* reporter,
  14                           SkScalar l, SkScalar t, SkScalar r, SkScalar b) {
  15     SkRect rect;
  16     rect.setLTRB(l, t, r, b);
  17     REPORTER_ASSERT(reporter, !rect.isFinite());
  18 }
  19
  20 // Tests that isFinite() will reject any rect with +/-inf values
  21 // as one of its coordinates.
  22 DEF_TEST(InfRect, reporter) {
  23     float inf = SK_FloatInfinity;
  24     float nan = SK_FloatNaN;
  25     SkASSERT(!(nan == nan));
  26     SkScalar small = SkIntToScalar(10);
  27     SkScalar big = SkIntToScalar(100);
  28
  29     REPORTER_ASSERT(reporter, SkRect::MakeEmpty().isFinite());
  30
  31     SkRect rect = SkRect::MakeXYWH(small, small, big, big);
  32     REPORTER_ASSERT(reporter, rect.isFinite());
  33
  34     const SkScalar invalid[] = { nan, inf, -inf };
  35     for (size_t i = 0; i < SK_ARRAY_COUNT(invalid); ++i) {
  36         check_invalid(reporter, small, small, big, invalid[i]);
  37         check_invalid(reporter, small, small, invalid[i], big);
  38         check_invalid(reporter, small, invalid[i], big, big);
  39         check_invalid(reporter, invalid[i], small, big, big);
  40     }
  41 }
  42
  43 // need tests for SkStrSearch