src/kudu/util/map-util-test.cc

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// to you under the Apache License, Version 2.0 (the
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// with the License.  You may obtain a copy of the License at
//
//   http://www.apache.org/licenses/LICENSE-2.0
//
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// This unit test belongs in gutil, but it depends on test_main which is
// part of util.
#include "kudu/gutil/map-util.h"

#include <gtest/gtest.h>
#include <map>

using std::map;

namespace kudu {

TEST(FloorTest, TestMapUtil) {
  map<int, int> my_map;

  ASSERT_EQ(nullptr, FindFloorOrNull(my_map, 5));

  my_map[5] = 5;
  ASSERT_EQ(5, *FindFloorOrNull(my_map, 6));
  ASSERT_EQ(5, *FindFloorOrNull(my_map, 5));
  ASSERT_EQ(nullptr, FindFloorOrNull(my_map, 4));

  my_map[1] = 1;
  ASSERT_EQ(5, *FindFloorOrNull(my_map, 6));
  ASSERT_EQ(5, *FindFloorOrNull(my_map, 5));
  ASSERT_EQ(1, *FindFloorOrNull(my_map, 4));
  ASSERT_EQ(1, *FindFloorOrNull(my_map, 1));
  ASSERT_EQ(nullptr, FindFloorOrNull(my_map, 0));

}

} // namespace kudu