Witch of Git - jade-rose/blob - toolchain/src/inst/test.rs

   1 use super::{parse, encode::Encode};
   2 use std::io::Cursor;
   3
   4 fn display(buf: &[u8]) -> String {
   5     println!("{}", buf.len());
   6     match buf.len() {
   7         1 => format!("{:04b}_{:04b}", buf[0] >> 4, buf[0] & 0xf),
   8         2 => format!("{:04b}_{:04b} {:04b}_{:04b}", buf[0] >> 4, buf[0] & 0xf, buf[1] >> 4, buf[1] & 0xf),
   9         n => unreachable!("Shouldn't be instructions of length {}", n),
  10     }
  11 }
  12
  13 macro_rules! test_parse {
  14     ($($txt:expr => $res:expr),* $(,)?) => {
  15         $(
  16             let mut buf = [0, 0];
  17             let mut cursor = Cursor::new(&mut buf[..]);
  18             let parsed = parse::parse_inst($txt).expect(&format!("parsed {:?}", $txt));
  19             parsed.encode(&mut cursor).expect(&format!("encoded {:x?}", parsed));
  20             let pos = cursor.position() as usize;
  21             assert_eq!($res, &display(&buf[..pos]));
  22         )*
  23     }
  24 }
  25
  26 #[test]
  27 fn trap() {
  28     test_parse! {
  29         "TRAP" => "0000_0000",
  30         "trap" => "0000_0000",
  31     }
  32 }
  33
  34 #[test]
  35 fn jump_call() {
  36     test_parse! {
  37         "JABS" => "0000_0100",
  38         "CABS" => "0000_0101",
  39         "JOFF" => "0000_0110",
  40         "COFF" => "0000_0111",
  41     }
  42 }
  43