projects / rustc.git / blame
| Commit | Line | Data |
|---|---|---|
| ea8adc8c XL |
1 | #[macro_use] extern crate conv;\r |
| 2 | \r | |
| 3 | use conv::{TryFrom, Unrepresentable};\r | |
| 4 | \r | |
| 5 | #[derive(Debug, PartialEq)]\r | |
| 6 | enum Get { Up, Down, AllAround }\r | |
| 7 | \r | |
| 8 | TryFrom! { (u8)\r | |
| 9 | enum Get {\r | |
| 10 | Up,\r | |
| 11 | /// And\r | |
| 12 | Down,\r | |
| 13 | /** And */\r | |
| 14 | AllAround\r | |
| 15 | }\r | |
| 16 | }\r | |
| 17 | \r | |
| 18 | #[derive(Debug, PartialEq)]\r | |
| 19 | enum GottaGo { GetAway, Fast = 9000, Faster = 9001 }\r | |
| 20 | \r | |
| 21 | TryFrom! { (u16)\r | |
| 22 | enum GottaGo {\r | |
| 23 | GetAway,\r | |
| 24 | Fast = 9000,\r | |
| 25 | /// This show was stupid.\r | |
| 26 | Faster = 9001\r | |
| 27 | }\r | |
| 28 | }\r | |
| 29 | \r | |
| 30 | #[test]\r | |
| 31 | fn test_try_from() {\r | |
| 32 | assert_eq!(Get::try_from(0u8), Ok(Get::Up));\r | |
| 33 | assert_eq!(Get::try_from(1u8), Ok(Get::Down));\r | |
| 34 | assert_eq!(Get::try_from(2u8), Ok(Get::AllAround));\r | |
| 35 | assert_eq!(Get::try_from(3u8), Err(Unrepresentable(3u8)));\r | |
| 36 | \r | |
| 37 | assert_eq!(GottaGo::try_from(0u16), Ok(GottaGo::GetAway));\r | |
| 38 | assert_eq!(GottaGo::try_from(1u16), Err(Unrepresentable(1u16)));\r | |
| 39 | assert_eq!(GottaGo::try_from(2u16), Err(Unrepresentable(2u16)));\r | |
| 40 | assert_eq!(GottaGo::try_from(3u16), Err(Unrepresentable(3u16)));\r | |
| 41 | assert_eq!(GottaGo::try_from(8999u16), Err(Unrepresentable(8999u16)));\r | |
| 42 | assert_eq!(GottaGo::try_from(9000u16), Ok(GottaGo::Fast));\r | |
| 43 | assert_eq!(GottaGo::try_from(9001u16), Ok(GottaGo::Faster));\r | |
| 44 | assert_eq!(GottaGo::try_from(9002u16), Err(Unrepresentable(9002u16)));\r | |
| 45 | }\r |