| #[test] |
| fn test_format_int() { |
| // Formatting integers should select the right implementation based off |
| // the type of the argument. Also, hex/octal/binary should be defined |
| // for integers, but they shouldn't emit the negative sign. |
| assert_eq!(format!("{}", 1isize), "1"); |
| assert_eq!(format!("{}", 1i8), "1"); |
| assert_eq!(format!("{}", 1i16), "1"); |
| assert_eq!(format!("{}", 1i32), "1"); |
| assert_eq!(format!("{}", 1i64), "1"); |
| assert_eq!(format!("{}", -1isize), "-1"); |
| assert_eq!(format!("{}", -1i8), "-1"); |
| assert_eq!(format!("{}", -1i16), "-1"); |
| assert_eq!(format!("{}", -1i32), "-1"); |
| assert_eq!(format!("{}", -1i64), "-1"); |
| assert_eq!(format!("{:?}", 1isize), "1"); |
| assert_eq!(format!("{:?}", 1i8), "1"); |
| assert_eq!(format!("{:?}", 1i16), "1"); |
| assert_eq!(format!("{:?}", 1i32), "1"); |
| assert_eq!(format!("{:?}", 1i64), "1"); |
| assert_eq!(format!("{:b}", 1isize), "1"); |
| assert_eq!(format!("{:b}", 1i8), "1"); |
| assert_eq!(format!("{:b}", 1i16), "1"); |
| assert_eq!(format!("{:b}", 1i32), "1"); |
| assert_eq!(format!("{:b}", 1i64), "1"); |
| assert_eq!(format!("{:x}", 1isize), "1"); |
| assert_eq!(format!("{:x}", 1i8), "1"); |
| assert_eq!(format!("{:x}", 1i16), "1"); |
| assert_eq!(format!("{:x}", 1i32), "1"); |
| assert_eq!(format!("{:x}", 1i64), "1"); |
| assert_eq!(format!("{:X}", 1isize), "1"); |
| assert_eq!(format!("{:X}", 1i8), "1"); |
| assert_eq!(format!("{:X}", 1i16), "1"); |
| assert_eq!(format!("{:X}", 1i32), "1"); |
| assert_eq!(format!("{:X}", 1i64), "1"); |
| assert_eq!(format!("{:o}", 1isize), "1"); |
| assert_eq!(format!("{:o}", 1i8), "1"); |
| assert_eq!(format!("{:o}", 1i16), "1"); |
| assert_eq!(format!("{:o}", 1i32), "1"); |
| assert_eq!(format!("{:o}", 1i64), "1"); |
| |
| assert_eq!(format!("{}", 1usize), "1"); |
| assert_eq!(format!("{}", 1u8), "1"); |
| assert_eq!(format!("{}", 1u16), "1"); |
| assert_eq!(format!("{}", 1u32), "1"); |
| assert_eq!(format!("{}", 1u64), "1"); |
| assert_eq!(format!("{:?}", 1usize), "1"); |
| assert_eq!(format!("{:?}", 1u8), "1"); |
| assert_eq!(format!("{:?}", 1u16), "1"); |
| assert_eq!(format!("{:?}", 1u32), "1"); |
| assert_eq!(format!("{:?}", 1u64), "1"); |
| assert_eq!(format!("{:b}", 1usize), "1"); |
| assert_eq!(format!("{:b}", 1u8), "1"); |
| assert_eq!(format!("{:b}", 1u16), "1"); |
| assert_eq!(format!("{:b}", 1u32), "1"); |
| assert_eq!(format!("{:b}", 1u64), "1"); |
| assert_eq!(format!("{:x}", 1usize), "1"); |
| assert_eq!(format!("{:x}", 1u8), "1"); |
| assert_eq!(format!("{:x}", 1u16), "1"); |
| assert_eq!(format!("{:x}", 1u32), "1"); |
| assert_eq!(format!("{:x}", 1u64), "1"); |
| assert_eq!(format!("{:X}", 1usize), "1"); |
| assert_eq!(format!("{:X}", 1u8), "1"); |
| assert_eq!(format!("{:X}", 1u16), "1"); |
| assert_eq!(format!("{:X}", 1u32), "1"); |
| assert_eq!(format!("{:X}", 1u64), "1"); |
| assert_eq!(format!("{:o}", 1usize), "1"); |
| assert_eq!(format!("{:o}", 1u8), "1"); |
| assert_eq!(format!("{:o}", 1u16), "1"); |
| assert_eq!(format!("{:o}", 1u32), "1"); |
| assert_eq!(format!("{:o}", 1u64), "1"); |
| |
| // Test a larger number |
| assert_eq!(format!("{:b}", 55), "110111"); |
| assert_eq!(format!("{:o}", 55), "67"); |
| assert_eq!(format!("{}", 55), "55"); |
| assert_eq!(format!("{:x}", 55), "37"); |
| assert_eq!(format!("{:X}", 55), "37"); |
| } |
| |
| #[test] |
| fn test_format_int_zero() { |
| assert_eq!(format!("{}", 0), "0"); |
| assert_eq!(format!("{:?}", 0), "0"); |
| assert_eq!(format!("{:b}", 0), "0"); |
| assert_eq!(format!("{:o}", 0), "0"); |
| assert_eq!(format!("{:x}", 0), "0"); |
| assert_eq!(format!("{:X}", 0), "0"); |
| |
| assert_eq!(format!("{}", 0u32), "0"); |
| assert_eq!(format!("{:?}", 0u32), "0"); |
| assert_eq!(format!("{:b}", 0u32), "0"); |
| assert_eq!(format!("{:o}", 0u32), "0"); |
| assert_eq!(format!("{:x}", 0u32), "0"); |
| assert_eq!(format!("{:X}", 0u32), "0"); |
| } |
| |
| #[test] |
| fn test_format_int_flags() { |
| assert_eq!(format!("{:3}", 1), " 1"); |
| assert_eq!(format!("{:>3}", 1), " 1"); |
| assert_eq!(format!("{:>+3}", 1), " +1"); |
| assert_eq!(format!("{:<3}", 1), "1 "); |
| assert_eq!(format!("{:#}", 1), "1"); |
| assert_eq!(format!("{:#x}", 10), "0xa"); |
| assert_eq!(format!("{:#X}", 10), "0xA"); |
| assert_eq!(format!("{:#5x}", 10), " 0xa"); |
| assert_eq!(format!("{:#o}", 10), "0o12"); |
| assert_eq!(format!("{:08x}", 10), "0000000a"); |
| assert_eq!(format!("{:8x}", 10), " a"); |
| assert_eq!(format!("{:<8x}", 10), "a "); |
| assert_eq!(format!("{:>8x}", 10), " a"); |
| assert_eq!(format!("{:#08x}", 10), "0x00000a"); |
| assert_eq!(format!("{:08}", -10), "-0000010"); |
| assert_eq!(format!("{:x}", !0u8), "ff"); |
| assert_eq!(format!("{:X}", !0u8), "FF"); |
| assert_eq!(format!("{:b}", !0u8), "11111111"); |
| assert_eq!(format!("{:o}", !0u8), "377"); |
| assert_eq!(format!("{:#x}", !0u8), "0xff"); |
| assert_eq!(format!("{:#X}", !0u8), "0xFF"); |
| assert_eq!(format!("{:#b}", !0u8), "0b11111111"); |
| assert_eq!(format!("{:#o}", !0u8), "0o377"); |
| } |
| |
| #[test] |
| fn test_format_int_sign_padding() { |
| assert_eq!(format!("{:+5}", 1), " +1"); |
| assert_eq!(format!("{:+5}", -1), " -1"); |
| assert_eq!(format!("{:05}", 1), "00001"); |
| assert_eq!(format!("{:05}", -1), "-0001"); |
| assert_eq!(format!("{:+05}", 1), "+0001"); |
| assert_eq!(format!("{:+05}", -1), "-0001"); |
| } |
| |
| #[test] |
| fn test_format_int_twos_complement() { |
| use core::{i16, i32, i64, i8}; |
| assert_eq!(format!("{}", i8::MIN), "-128"); |
| assert_eq!(format!("{}", i16::MIN), "-32768"); |
| assert_eq!(format!("{}", i32::MIN), "-2147483648"); |
| assert_eq!(format!("{}", i64::MIN), "-9223372036854775808"); |
| } |
| |
| #[test] |
| fn test_format_debug_hex() { |
| assert_eq!(format!("{:02x?}", b"Foo\0"), "[46, 6f, 6f, 00]"); |
| assert_eq!(format!("{:02X?}", b"Foo\0"), "[46, 6F, 6F, 00]"); |
| } |