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AK+Tests: Add time units conversion functions to Duration

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These take a numerator and denominator defining the unit in a fractions
of a second. Conversion is done in integers, meaning that these must
clamp when approaching numeric limits.
This commit is contained in:
Zaggy1024 2025-11-10 16:07:17 -06:00 • committed by Jelle Raaijmakers
parent ec14948175
commit a1358fa970
Notes: github-actions[bot] 2025-11-17 15:53:19 +00:00
3 changed files with 81 additions and 0 deletions
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41
Tests/AK/TestTime.cpp
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@ -939,3 +939,44 @@ TEST_CASE(from_f64_seconds)
EXPECT_DEATH("Converting float NaN seconds", (void)Duration::from_seconds_f64(NAN));
}
TEST_CASE(time_units)
{
EXPECT_EQ(Duration::from_time_units(1, 1, 1), Duration::from_seconds(1));
EXPECT_EQ(Duration::from_time_units(-312, 1, 48'000), Duration::from_microseconds(-6'500));
EXPECT_EQ(Duration::from_time_units(960, 1, 48'000), Duration::from_microseconds(20'000));
EXPECT_EQ(Duration::from_time_units(960, 1, 48'000), Duration::from_microseconds(20'000));
EXPECT_EQ(Duration::from_time_units(8, 4, 1), Duration::from_seconds(32));
EXPECT_EQ(Duration::from_time_units(3, 3, 2'000'000'000), Duration::from_nanoseconds(5));
EXPECT_EQ(Duration::from_time_units(4, 3, 2'000'000'000), Duration::from_nanoseconds(6));
EXPECT_EQ(Duration::from_time_units(999'999'998, 1, 2'000'000'000), Duration::from_nanoseconds(499'999'999));
EXPECT_EQ(Duration::from_time_units(999'999'999, 1, 2'000'000'000), Duration::from_nanoseconds(500'000'000));
EXPECT_EQ(Duration::from_time_units(1'000'000'000, 1, 2'000'000'000), Duration::from_nanoseconds(500'000'000));
EXPECT_EQ(Duration::from_time_units(NumericLimits<i64>::max(), 1, 2), Duration::from_seconds(NumericLimits<i64>::max() / 2) + Duration::from_milliseconds(500));
EXPECT_EQ(Duration::from_time_units((NumericLimits<i64>::max() / 2), 2, 1), Duration::from_seconds(NumericLimits<i64>::max() - 1));
EXPECT_EQ(Duration::from_time_units((NumericLimits<i64>::max() / 2) + 1, 2, 1), Duration::from_seconds(NumericLimits<i64>::max()));
EXPECT_EQ(Duration::from_time_units((NumericLimits<i64>::min() / 2), 2, 1), Duration::from_seconds(NumericLimits<i64>::min()));
EXPECT_EQ(Duration::from_time_units((NumericLimits<i64>::min() / 2) - 1, 2, 1), Duration::from_seconds(NumericLimits<i64>::min()));
EXPECT_EQ(Duration::from_milliseconds(999).to_time_units(1, 48'000), 47'952);
EXPECT_EQ(Duration::from_milliseconds(-12'500).to_time_units(1, 1'000), -12'500);
EXPECT_EQ(Duration::from_milliseconds(-12'500).to_time_units(1, 1'000), -12'500);
EXPECT_EQ(Duration::from_nanoseconds(154'489'696).to_time_units(1, 48'000), 7'416);
EXPECT_EQ(Duration::from_nanoseconds(154'489'375).to_time_units(1, 48'000), 7'415);
EXPECT_EQ(Duration::from_nanoseconds(-154'489'696).to_time_units(1, 48'000), -7'416);
EXPECT_EQ(Duration::from_nanoseconds(-154'489'375).to_time_units(1, 48'000), -7'415);
EXPECT_EQ(Duration::from_nanoseconds(1'900'000'000).to_time_units(3, 2), 1);
EXPECT_EQ(Duration::from_nanoseconds(1'800'000'000).to_time_units(3, 1), 1);
EXPECT_EQ(Duration::from_seconds(3).to_time_units(4, 1), 1);
EXPECT_EQ(Duration::from_seconds(4).to_time_units(4, 1), 1);
EXPECT_EQ(Duration::from_seconds(5).to_time_units(4, 1), 1);
EXPECT_EQ(Duration::from_seconds(6).to_time_units(4, 1), 2);
EXPECT_EQ(Duration::from_seconds(2'147'483'649).to_time_units(1, NumericLimits<u32>::max()), NumericLimits<i64>::max());
EXPECT_EQ(Duration::from_seconds(2'147'483'648).to_time_units(1, NumericLimits<u32>::max()), NumericLimits<i64>::max() - (NumericLimits<u32>::max() / 2));
EXPECT_DEATH("From time units with zero numerator", (void)Duration::from_time_units(1, 0, 1));
EXPECT_DEATH("From time units with zero denominator", (void)Duration::from_time_units(1, 1, 0));
}