cpp/src/arrow/util/time_test.cc

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// to you under the Apache License, Version 2.0 (the
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//   http://www.apache.org/licenses/LICENSE-2.0
//
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#include <gtest/gtest.h>

#include "arrow/testing/gtest_util.h"
#include "arrow/util/time.h"

namespace arrow {
namespace util {

TEST(TimeTest, ConvertTimestampValue) {
  auto convert = [](TimeUnit::type in, TimeUnit::type out, int64_t value) {
    return ConvertTimestampValue(timestamp(in), timestamp(out), value).ValueOrDie();
  };

  auto units = {
      TimeUnit::SECOND,
      TimeUnit::MILLI,
      TimeUnit::MICRO,
      TimeUnit::NANO,
  };

  // Test for identity
  for (auto unit : units) {
    EXPECT_EQ(convert(unit, unit, 0), 0);
    EXPECT_EQ(convert(unit, unit, INT64_MAX), INT64_MAX);
    EXPECT_EQ(convert(unit, unit, INT64_MIN), INT64_MIN);
  }

  EXPECT_EQ(convert(TimeUnit::SECOND, TimeUnit::MILLI, 2), 2000);
  EXPECT_EQ(convert(TimeUnit::SECOND, TimeUnit::MICRO, 2), 2000000);
  EXPECT_EQ(convert(TimeUnit::SECOND, TimeUnit::NANO, 2), 2000000000);

  EXPECT_EQ(convert(TimeUnit::MILLI, TimeUnit::SECOND, 7000), 7);
  EXPECT_EQ(convert(TimeUnit::MILLI, TimeUnit::MICRO, 7), 7000);
  EXPECT_EQ(convert(TimeUnit::MILLI, TimeUnit::NANO, 7), 7000000);

  EXPECT_EQ(convert(TimeUnit::MICRO, TimeUnit::SECOND, 4000000), 4);
  EXPECT_EQ(convert(TimeUnit::MICRO, TimeUnit::MILLI, 4000), 4);
  EXPECT_EQ(convert(TimeUnit::MICRO, TimeUnit::SECOND, 4000000), 4);

  EXPECT_EQ(convert(TimeUnit::NANO, TimeUnit::SECOND, 6000000000), 6);
  EXPECT_EQ(convert(TimeUnit::NANO, TimeUnit::MILLI, 6000000), 6);
  EXPECT_EQ(convert(TimeUnit::NANO, TimeUnit::MICRO, 6000), 6);
}

}  // namespace util
}  // namespace arrow