diff options
Diffstat (limited to 'src/libcore/tests/fmt/num.rs')
| -rw-r--r-- | src/libcore/tests/fmt/num.rs | 80 |
1 files changed, 80 insertions, 0 deletions
diff --git a/src/libcore/tests/fmt/num.rs b/src/libcore/tests/fmt/num.rs index 10fcf8b76cc..a50c2b46a91 100644 --- a/src/libcore/tests/fmt/num.rs +++ b/src/libcore/tests/fmt/num.rs @@ -38,6 +38,16 @@ fn test_format_int() { assert_eq!(format!("{:o}", 1i16), "1"); assert_eq!(format!("{:o}", 1i32), "1"); assert_eq!(format!("{:o}", 1i64), "1"); + assert_eq!(format!("{:e}", 1isize), "1e0"); + assert_eq!(format!("{:e}", 1i8), "1e0"); + assert_eq!(format!("{:e}", 1i16), "1e0"); + assert_eq!(format!("{:e}", 1i32), "1e0"); + assert_eq!(format!("{:e}", 1i64), "1e0"); + assert_eq!(format!("{:E}", 1isize), "1E0"); + assert_eq!(format!("{:E}", 1i8), "1E0"); + assert_eq!(format!("{:E}", 1i16), "1E0"); + assert_eq!(format!("{:E}", 1i32), "1E0"); + assert_eq!(format!("{:E}", 1i64), "1E0"); assert_eq!(format!("{}", 1usize), "1"); assert_eq!(format!("{}", 1u8), "1"); @@ -69,6 +79,14 @@ fn test_format_int() { assert_eq!(format!("{:o}", 1u16), "1"); assert_eq!(format!("{:o}", 1u32), "1"); assert_eq!(format!("{:o}", 1u64), "1"); + assert_eq!(format!("{:e}", 1u8), "1e0"); + assert_eq!(format!("{:e}", 1u16), "1e0"); + assert_eq!(format!("{:e}", 1u32), "1e0"); + assert_eq!(format!("{:e}", 1u64), "1e0"); + assert_eq!(format!("{:E}", 1u8), "1E0"); + assert_eq!(format!("{:E}", 1u16), "1E0"); + assert_eq!(format!("{:E}", 1u32), "1E0"); + assert_eq!(format!("{:E}", 1u64), "1E0"); // Test a larger number assert_eq!(format!("{:b}", 55), "110111"); @@ -76,6 +94,64 @@ fn test_format_int() { assert_eq!(format!("{}", 55), "55"); assert_eq!(format!("{:x}", 55), "37"); assert_eq!(format!("{:X}", 55), "37"); + assert_eq!(format!("{:e}", 55), "5.5e1"); + assert_eq!(format!("{:E}", 55), "5.5E1"); + assert_eq!(format!("{:e}", 10000000000u64), "1e10"); + assert_eq!(format!("{:E}", 10000000000u64), "1E10"); + assert_eq!(format!("{:e}", 10000000001u64), "1.0000000001e10"); + assert_eq!(format!("{:E}", 10000000001u64), "1.0000000001E10"); +} + +#[test] +fn test_format_int_exp_limits() { + use core::{i128, i16, i32, i64, i8, u128, u16, u32, u64, u8}; + assert_eq!(format!("{:e}", i8::MIN), "-1.28e2"); + assert_eq!(format!("{:e}", i8::MAX), "1.27e2"); + assert_eq!(format!("{:e}", i16::MIN), "-3.2768e4"); + assert_eq!(format!("{:e}", i16::MAX), "3.2767e4"); + assert_eq!(format!("{:e}", i32::MIN), "-2.147483648e9"); + assert_eq!(format!("{:e}", i32::MAX), "2.147483647e9"); + assert_eq!(format!("{:e}", i64::MIN), "-9.223372036854775808e18"); + assert_eq!(format!("{:e}", i64::MAX), "9.223372036854775807e18"); + assert_eq!(format!("{:e}", i128::MIN), "-1.70141183460469231731687303715884105728e38"); + assert_eq!(format!("{:e}", i128::MAX), "1.70141183460469231731687303715884105727e38"); + + assert_eq!(format!("{:e}", u8::MAX), "2.55e2"); + assert_eq!(format!("{:e}", u16::MAX), "6.5535e4"); + assert_eq!(format!("{:e}", u32::MAX), "4.294967295e9"); + assert_eq!(format!("{:e}", u64::MAX), "1.8446744073709551615e19"); + assert_eq!(format!("{:e}", u128::MAX), "3.40282366920938463463374607431768211455e38"); +} + +#[test] +fn test_format_int_exp_precision() { + use core::{i128, i16, i32, i64, i8}; + + //test that float and integer match + let big_int: u32 = 314_159_265; + assert_eq!(format!("{:.1e}", big_int), format!("{:.1e}", f64::from(big_int))); + + //test adding precision + assert_eq!(format!("{:.10e}", i8::MIN), "-1.2800000000e2"); + assert_eq!(format!("{:.10e}", i16::MIN), "-3.2768000000e4"); + assert_eq!(format!("{:.10e}", i32::MIN), "-2.1474836480e9"); + assert_eq!(format!("{:.20e}", i64::MIN), "-9.22337203685477580800e18"); + assert_eq!(format!("{:.40e}", i128::MIN), "-1.7014118346046923173168730371588410572800e38"); + + //test rounding + assert_eq!(format!("{:.1e}", i8::MIN), "-1.3e2"); + assert_eq!(format!("{:.1e}", i16::MIN), "-3.3e4"); + assert_eq!(format!("{:.1e}", i32::MIN), "-2.1e9"); + assert_eq!(format!("{:.1e}", i64::MIN), "-9.2e18"); + assert_eq!(format!("{:.1e}", i128::MIN), "-1.7e38"); + + //test huge precision + assert_eq!(format!("{:.1000e}", 1), format!("1.{}e0", "0".repeat(1000))); + //test zero precision + assert_eq!(format!("{:.0e}", 1), format!("1e0",)); + + //test padding with precision (and sign) + assert_eq!(format!("{:+10.3e}", 1), " +1.000e0"); } #[test] @@ -86,6 +162,8 @@ fn test_format_int_zero() { assert_eq!(format!("{:o}", 0), "0"); assert_eq!(format!("{:x}", 0), "0"); assert_eq!(format!("{:X}", 0), "0"); + assert_eq!(format!("{:e}", 0), "0e0"); + assert_eq!(format!("{:E}", 0), "0E0"); assert_eq!(format!("{}", 0u32), "0"); assert_eq!(format!("{:?}", 0u32), "0"); @@ -93,6 +171,8 @@ fn test_format_int_zero() { assert_eq!(format!("{:o}", 0u32), "0"); assert_eq!(format!("{:x}", 0u32), "0"); assert_eq!(format!("{:X}", 0u32), "0"); + assert_eq!(format!("{:e}", 0u32), "0e0"); + assert_eq!(format!("{:E}", 0u32), "0E0"); } #[test] |