Added some tests

src/print.rs

@@ -1,3 +1,5 @@
+#![allow(dead_code)]
+#![allow(unused_variables)]
 use crate::decode::Instruction;
 
 const RISCV_LUI: u8 = 0x37;
@@ -255,3 +257,25 @@ pub fn print(ins: Instruction, pc: i32) -> String { //TODO pc should be u64
     }
 
 }
+
+
+#[cfg(test)]
+mod Test {
+    use crate::{print, decode};
+
+    #[test]
+    fn test1() {
+        let sub = decode::decode(0b01000001000010001000111000110011);
+        let add = decode::decode(0b00000001000010001000111000110011);
+        let xor = decode::decode(0b00000001000010001100111000110011);
+        let slr = decode::decode(0b00000001000010001101111000110011);
+        let sra = decode::decode(0b01000001000010001101111000110011);
+
+        assert_eq!("sub r28, r17, r16", print::print(sub, 0));
+        assert_eq!("xor r28, r17, r16", print::print(xor, 0));
+        assert_eq!("srl r28, r17, r16", print::print(slr, 0));
+        assert_eq!("sra r28, r17, r16", print::print(sra, 0));
+        assert_eq!("add r28, r17, r16", print::print(add, 0));
+
+    }
+}