diff options
Diffstat (limited to 'library/core/tests/time.rs')
| -rw-r--r-- | library/core/tests/time.rs | 293 |
1 files changed, 293 insertions, 0 deletions
diff --git a/library/core/tests/time.rs b/library/core/tests/time.rs new file mode 100644 index 00000000000..7a6675dc82f --- /dev/null +++ b/library/core/tests/time.rs @@ -0,0 +1,293 @@ +use core::time::Duration; + +#[test] +fn creation() { + assert_ne!(Duration::from_secs(1), Duration::from_secs(0)); + assert_eq!(Duration::from_secs(1) + Duration::from_secs(2), Duration::from_secs(3)); + assert_eq!( + Duration::from_millis(10) + Duration::from_secs(4), + Duration::new(4, 10 * 1_000_000) + ); + assert_eq!(Duration::from_millis(4000), Duration::new(4, 0)); +} + +#[test] +#[should_panic] +fn new_overflow() { + let _ = Duration::new(u64::MAX, 1_000_000_000); +} + +#[test] +fn secs() { + assert_eq!(Duration::new(0, 0).as_secs(), 0); + assert_eq!(Duration::new(0, 500_000_005).as_secs(), 0); + assert_eq!(Duration::new(0, 1_050_000_001).as_secs(), 1); + assert_eq!(Duration::from_secs(1).as_secs(), 1); + assert_eq!(Duration::from_millis(999).as_secs(), 0); + assert_eq!(Duration::from_millis(1001).as_secs(), 1); + assert_eq!(Duration::from_micros(999_999).as_secs(), 0); + assert_eq!(Duration::from_micros(1_000_001).as_secs(), 1); + assert_eq!(Duration::from_nanos(999_999_999).as_secs(), 0); + assert_eq!(Duration::from_nanos(1_000_000_001).as_secs(), 1); +} + +#[test] +fn millis() { + assert_eq!(Duration::new(0, 0).subsec_millis(), 0); + assert_eq!(Duration::new(0, 500_000_005).subsec_millis(), 500); + assert_eq!(Duration::new(0, 1_050_000_001).subsec_millis(), 50); + assert_eq!(Duration::from_secs(1).subsec_millis(), 0); + assert_eq!(Duration::from_millis(999).subsec_millis(), 999); + assert_eq!(Duration::from_millis(1001).subsec_millis(), 1); + assert_eq!(Duration::from_micros(999_999).subsec_millis(), 999); + assert_eq!(Duration::from_micros(1_001_000).subsec_millis(), 1); + assert_eq!(Duration::from_nanos(999_999_999).subsec_millis(), 999); + assert_eq!(Duration::from_nanos(1_001_000_000).subsec_millis(), 1); +} + +#[test] +fn micros() { + assert_eq!(Duration::new(0, 0).subsec_micros(), 0); + assert_eq!(Duration::new(0, 500_000_005).subsec_micros(), 500_000); + assert_eq!(Duration::new(0, 1_050_000_001).subsec_micros(), 50_000); + assert_eq!(Duration::from_secs(1).subsec_micros(), 0); + assert_eq!(Duration::from_millis(999).subsec_micros(), 999_000); + assert_eq!(Duration::from_millis(1001).subsec_micros(), 1_000); + assert_eq!(Duration::from_micros(999_999).subsec_micros(), 999_999); + assert_eq!(Duration::from_micros(1_000_001).subsec_micros(), 1); + assert_eq!(Duration::from_nanos(999_999_999).subsec_micros(), 999_999); + assert_eq!(Duration::from_nanos(1_000_001_000).subsec_micros(), 1); +} + +#[test] +fn nanos() { + assert_eq!(Duration::new(0, 0).subsec_nanos(), 0); + assert_eq!(Duration::new(0, 5).subsec_nanos(), 5); + assert_eq!(Duration::new(0, 1_000_000_001).subsec_nanos(), 1); + assert_eq!(Duration::from_secs(1).subsec_nanos(), 0); + assert_eq!(Duration::from_millis(999).subsec_nanos(), 999_000_000); + assert_eq!(Duration::from_millis(1001).subsec_nanos(), 1_000_000); + assert_eq!(Duration::from_micros(999_999).subsec_nanos(), 999_999_000); + assert_eq!(Duration::from_micros(1_000_001).subsec_nanos(), 1000); + assert_eq!(Duration::from_nanos(999_999_999).subsec_nanos(), 999_999_999); + assert_eq!(Duration::from_nanos(1_000_000_001).subsec_nanos(), 1); +} + +#[test] +fn add() { + assert_eq!(Duration::new(0, 0) + Duration::new(0, 1), Duration::new(0, 1)); + assert_eq!(Duration::new(0, 500_000_000) + Duration::new(0, 500_000_001), Duration::new(1, 1)); +} + +#[test] +fn checked_add() { + assert_eq!(Duration::new(0, 0).checked_add(Duration::new(0, 1)), Some(Duration::new(0, 1))); + assert_eq!( + Duration::new(0, 500_000_000).checked_add(Duration::new(0, 500_000_001)), + Some(Duration::new(1, 1)) + ); + assert_eq!(Duration::new(1, 0).checked_add(Duration::new(u64::MAX, 0)), None); +} + +#[test] +fn sub() { + assert_eq!(Duration::new(0, 1) - Duration::new(0, 0), Duration::new(0, 1)); + assert_eq!(Duration::new(0, 500_000_001) - Duration::new(0, 500_000_000), Duration::new(0, 1)); + assert_eq!(Duration::new(1, 0) - Duration::new(0, 1), Duration::new(0, 999_999_999)); +} + +#[test] +fn checked_sub() { + let zero = Duration::new(0, 0); + let one_nano = Duration::new(0, 1); + let one_sec = Duration::new(1, 0); + assert_eq!(one_nano.checked_sub(zero), Some(Duration::new(0, 1))); + assert_eq!(one_sec.checked_sub(one_nano), Some(Duration::new(0, 999_999_999))); + assert_eq!(zero.checked_sub(one_nano), None); + assert_eq!(zero.checked_sub(one_sec), None); +} + +#[test] +#[should_panic] +fn sub_bad1() { + let _ = Duration::new(0, 0) - Duration::new(0, 1); +} + +#[test] +#[should_panic] +fn sub_bad2() { + let _ = Duration::new(0, 0) - Duration::new(1, 0); +} + +#[test] +fn mul() { + assert_eq!(Duration::new(0, 1) * 2, Duration::new(0, 2)); + assert_eq!(Duration::new(1, 1) * 3, Duration::new(3, 3)); + assert_eq!(Duration::new(0, 500_000_001) * 4, Duration::new(2, 4)); + assert_eq!(Duration::new(0, 500_000_001) * 4000, Duration::new(2000, 4000)); +} + +#[test] +fn checked_mul() { + assert_eq!(Duration::new(0, 1).checked_mul(2), Some(Duration::new(0, 2))); + assert_eq!(Duration::new(1, 1).checked_mul(3), Some(Duration::new(3, 3))); + assert_eq!(Duration::new(0, 500_000_001).checked_mul(4), Some(Duration::new(2, 4))); + assert_eq!(Duration::new(0, 500_000_001).checked_mul(4000), Some(Duration::new(2000, 4000))); + assert_eq!(Duration::new(u64::MAX - 1, 0).checked_mul(2), None); +} + +#[test] +fn div() { + assert_eq!(Duration::new(0, 1) / 2, Duration::new(0, 0)); + assert_eq!(Duration::new(1, 1) / 3, Duration::new(0, 333_333_333)); + assert_eq!(Duration::new(99, 999_999_000) / 100, Duration::new(0, 999_999_990)); +} + +#[test] +fn checked_div() { + assert_eq!(Duration::new(2, 0).checked_div(2), Some(Duration::new(1, 0))); + assert_eq!(Duration::new(1, 0).checked_div(2), Some(Duration::new(0, 500_000_000))); + assert_eq!(Duration::new(2, 0).checked_div(0), None); +} + +#[test] +fn correct_sum() { + let durations = [ + Duration::new(1, 999_999_999), + Duration::new(2, 999_999_999), + Duration::new(0, 999_999_999), + Duration::new(0, 999_999_999), + Duration::new(0, 999_999_999), + Duration::new(5, 0), + ]; + let sum = durations.iter().sum::<Duration>(); + assert_eq!(sum, Duration::new(1 + 2 + 5 + 4, 1_000_000_000 - 5)); +} + +#[test] +fn debug_formatting_extreme_values() { + assert_eq!( + format!("{:?}", Duration::new(18_446_744_073_709_551_615, 123_456_789)), + "18446744073709551615.123456789s" + ); +} + +#[test] +fn debug_formatting_secs() { + assert_eq!(format!("{:?}", Duration::new(7, 000_000_000)), "7s"); + assert_eq!(format!("{:?}", Duration::new(7, 100_000_000)), "7.1s"); + assert_eq!(format!("{:?}", Duration::new(7, 000_010_000)), "7.00001s"); + assert_eq!(format!("{:?}", Duration::new(7, 000_000_001)), "7.000000001s"); + assert_eq!(format!("{:?}", Duration::new(7, 123_456_789)), "7.123456789s"); + + assert_eq!(format!("{:?}", Duration::new(88, 000_000_000)), "88s"); + assert_eq!(format!("{:?}", Duration::new(88, 100_000_000)), "88.1s"); + assert_eq!(format!("{:?}", Duration::new(88, 000_010_000)), "88.00001s"); + assert_eq!(format!("{:?}", Duration::new(88, 000_000_001)), "88.000000001s"); + assert_eq!(format!("{:?}", Duration::new(88, 123_456_789)), "88.123456789s"); + + assert_eq!(format!("{:?}", Duration::new(999, 000_000_000)), "999s"); + assert_eq!(format!("{:?}", Duration::new(999, 100_000_000)), "999.1s"); + assert_eq!(format!("{:?}", Duration::new(999, 000_010_000)), "999.00001s"); + assert_eq!(format!("{:?}", Duration::new(999, 000_000_001)), "999.000000001s"); + assert_eq!(format!("{:?}", Duration::new(999, 123_456_789)), "999.123456789s"); +} + +#[test] +fn debug_formatting_millis() { + assert_eq!(format!("{:?}", Duration::new(0, 7_000_000)), "7ms"); + assert_eq!(format!("{:?}", Duration::new(0, 7_100_000)), "7.1ms"); + assert_eq!(format!("{:?}", Duration::new(0, 7_000_001)), "7.000001ms"); + assert_eq!(format!("{:?}", Duration::new(0, 7_123_456)), "7.123456ms"); + + assert_eq!(format!("{:?}", Duration::new(0, 88_000_000)), "88ms"); + assert_eq!(format!("{:?}", Duration::new(0, 88_100_000)), "88.1ms"); + assert_eq!(format!("{:?}", Duration::new(0, 88_000_001)), "88.000001ms"); + assert_eq!(format!("{:?}", Duration::new(0, 88_123_456)), "88.123456ms"); + + assert_eq!(format!("{:?}", Duration::new(0, 999_000_000)), "999ms"); + assert_eq!(format!("{:?}", Duration::new(0, 999_100_000)), "999.1ms"); + assert_eq!(format!("{:?}", Duration::new(0, 999_000_001)), "999.000001ms"); + assert_eq!(format!("{:?}", Duration::new(0, 999_123_456)), "999.123456ms"); +} + +#[test] +fn debug_formatting_micros() { + assert_eq!(format!("{:?}", Duration::new(0, 7_000)), "7µs"); + assert_eq!(format!("{:?}", Duration::new(0, 7_100)), "7.1µs"); + assert_eq!(format!("{:?}", Duration::new(0, 7_001)), "7.001µs"); + assert_eq!(format!("{:?}", Duration::new(0, 7_123)), "7.123µs"); + + assert_eq!(format!("{:?}", Duration::new(0, 88_000)), "88µs"); + assert_eq!(format!("{:?}", Duration::new(0, 88_100)), "88.1µs"); + assert_eq!(format!("{:?}", Duration::new(0, 88_001)), "88.001µs"); + assert_eq!(format!("{:?}", Duration::new(0, 88_123)), "88.123µs"); + + assert_eq!(format!("{:?}", Duration::new(0, 999_000)), "999µs"); + assert_eq!(format!("{:?}", Duration::new(0, 999_100)), "999.1µs"); + assert_eq!(format!("{:?}", Duration::new(0, 999_001)), "999.001µs"); + assert_eq!(format!("{:?}", Duration::new(0, 999_123)), "999.123µs"); +} + +#[test] +fn debug_formatting_nanos() { + assert_eq!(format!("{:?}", Duration::new(0, 0)), "0ns"); + assert_eq!(format!("{:?}", Duration::new(0, 1)), "1ns"); + assert_eq!(format!("{:?}", Duration::new(0, 88)), "88ns"); + assert_eq!(format!("{:?}", Duration::new(0, 999)), "999ns"); +} + +#[test] +fn debug_formatting_precision_zero() { + assert_eq!(format!("{:.0?}", Duration::new(0, 0)), "0ns"); + assert_eq!(format!("{:.0?}", Duration::new(0, 123)), "123ns"); + + assert_eq!(format!("{:.0?}", Duration::new(0, 1_001)), "1µs"); + assert_eq!(format!("{:.0?}", Duration::new(0, 1_499)), "1µs"); + assert_eq!(format!("{:.0?}", Duration::new(0, 1_500)), "2µs"); + assert_eq!(format!("{:.0?}", Duration::new(0, 1_999)), "2µs"); + + assert_eq!(format!("{:.0?}", Duration::new(0, 1_000_001)), "1ms"); + assert_eq!(format!("{:.0?}", Duration::new(0, 1_499_999)), "1ms"); + assert_eq!(format!("{:.0?}", Duration::new(0, 1_500_000)), "2ms"); + assert_eq!(format!("{:.0?}", Duration::new(0, 1_999_999)), "2ms"); + + assert_eq!(format!("{:.0?}", Duration::new(1, 000_000_001)), "1s"); + assert_eq!(format!("{:.0?}", Duration::new(1, 499_999_999)), "1s"); + assert_eq!(format!("{:.0?}", Duration::new(1, 500_000_000)), "2s"); + assert_eq!(format!("{:.0?}", Duration::new(1, 999_999_999)), "2s"); +} + +#[test] +fn debug_formatting_precision_two() { + assert_eq!(format!("{:.2?}", Duration::new(0, 0)), "0.00ns"); + assert_eq!(format!("{:.2?}", Duration::new(0, 123)), "123.00ns"); + + assert_eq!(format!("{:.2?}", Duration::new(0, 1_000)), "1.00µs"); + assert_eq!(format!("{:.2?}", Duration::new(0, 7_001)), "7.00µs"); + assert_eq!(format!("{:.2?}", Duration::new(0, 7_100)), "7.10µs"); + assert_eq!(format!("{:.2?}", Duration::new(0, 7_109)), "7.11µs"); + assert_eq!(format!("{:.2?}", Duration::new(0, 7_199)), "7.20µs"); + assert_eq!(format!("{:.2?}", Duration::new(0, 1_999)), "2.00µs"); + + assert_eq!(format!("{:.2?}", Duration::new(0, 1_000_000)), "1.00ms"); + assert_eq!(format!("{:.2?}", Duration::new(0, 3_001_000)), "3.00ms"); + assert_eq!(format!("{:.2?}", Duration::new(0, 3_100_000)), "3.10ms"); + assert_eq!(format!("{:.2?}", Duration::new(0, 1_999_999)), "2.00ms"); + + assert_eq!(format!("{:.2?}", Duration::new(1, 000_000_000)), "1.00s"); + assert_eq!(format!("{:.2?}", Duration::new(4, 001_000_000)), "4.00s"); + assert_eq!(format!("{:.2?}", Duration::new(2, 100_000_000)), "2.10s"); + assert_eq!(format!("{:.2?}", Duration::new(2, 104_990_000)), "2.10s"); + assert_eq!(format!("{:.2?}", Duration::new(2, 105_000_000)), "2.11s"); + assert_eq!(format!("{:.2?}", Duration::new(8, 999_999_999)), "9.00s"); +} + +#[test] +fn debug_formatting_precision_high() { + assert_eq!(format!("{:.5?}", Duration::new(0, 23_678)), "23.67800µs"); + + assert_eq!(format!("{:.9?}", Duration::new(1, 000_000_000)), "1.000000000s"); + assert_eq!(format!("{:.10?}", Duration::new(4, 001_000_000)), "4.0010000000s"); + assert_eq!(format!("{:.20?}", Duration::new(4, 001_000_000)), "4.00100000000000000000s"); +} |