BUGFIX: Decoder now decodes instructions without parameters

cli/src/bin/decode.rs

@@ -1,11 +1,22 @@
 use core::instruction::Instruction;
 use core::address_mode::AddressMode;
+use core::operand::Operand;
+use core::operation::Operation;
 
 fn main() {
     println!("Taxation is Theft");
 
-    // Instruction::from_bytes(vec![0b11100011]);
+    let instructions = vec![(
+        Instruction {
+            op: Operation::NOP,
+            mode: AddressMode::Implied,
+            operand: Operand::None,
+        }, &[0xea]
+        )];
 
-    // let instruction = Instruction::ADC(AddressMode::Immediate);
-    // println!("Instruction = {:?}", instruction.to_string());
+    for (op, bytes) in instructions {
+        assert_eq!(Instruction::decode(bytes), Some(op));
+    }
+  //  let instruction = Instruction::decode(&[0xea]);
+  //  println!("NOP Decoded -> {:?}", instruction);
 }