gpu/config/gpu_util_unittest.cc

   1 // Copyright (c) 2011 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #include "gpu/config/gpu_util.h"
   6 #include "testing/gtest/include/gtest/gtest.h"
   7
   8 namespace gpu {
   9
  10 TEST(GpuUtilTest, MergeFeatureSets) {
  11   {
  12     // Merge two empty sets.
  13     std::set<int> src;
  14     std::set<int> dst;
  15     EXPECT_TRUE(dst.empty());
  16     MergeFeatureSets(&dst, src);
  17     EXPECT_TRUE(dst.empty());
  18   }
  19   {
  20     // Merge an empty set into a set with elements.
  21     std::set<int> src;
  22     std::set<int> dst;
  23     dst.insert(1);
  24     EXPECT_EQ(1u, dst.size());
  25     MergeFeatureSets(&dst, src);
  26     EXPECT_EQ(1u, dst.size());
  27   }
  28   {
  29     // Merge two sets where the source elements are already in the target set.
  30     std::set<int> src;
  31     std::set<int> dst;
  32     src.insert(1);
  33     dst.insert(1);
  34     EXPECT_EQ(1u, dst.size());
  35     MergeFeatureSets(&dst, src);
  36     EXPECT_EQ(1u, dst.size());
  37   }
  38   {
  39     // Merge two sets with different elements.
  40     std::set<int> src;
  41     std::set<int> dst;
  42     src.insert(1);
  43     dst.insert(2);
  44     EXPECT_EQ(1u, dst.size());
  45     MergeFeatureSets(&dst, src);
  46     EXPECT_EQ(2u, dst.size());
  47   }
  48 }
  49
  50 TEST(GpuUtilTest, StringToFeatureSet) {
  51   {
  52     // zero feature.
  53     std::set<int> features;
  54     StringToFeatureSet("", &features);
  55     EXPECT_EQ(0u, features.size());
  56   }
  57   {
  58     // One features.
  59     std::set<int> features;
  60     StringToFeatureSet("4", &features);
  61     EXPECT_EQ(1u, features.size());
  62   }
  63   {
  64     // Multiple features.
  65     std::set<int> features;
  66     StringToFeatureSet("1,9", &features);
  67     EXPECT_EQ(2u, features.size());
  68   }
  69 }
  70
  71 }  // namespace gpu