From 40dbe95bef487be8e4646a4b1520d7e88437e11e Mon Sep 17 00:00:00 2001
From: Madeline Cronin <maddie.henlo@gmail.com>
Date: Sun, 8 Sep 2024 13:45:44 +0100
Subject: [PATCH] Implement tests for condition check commands

---
 src/processor.rs | 37 +++++++++++++++++++++++++++++++++++--
 1 file changed, 35 insertions(+), 2 deletions(-)

diff --git a/src/processor.rs b/src/processor.rs
index 10f6d13..796634d 100644
--- a/src/processor.rs
+++ b/src/processor.rs
@@ -127,7 +127,7 @@ impl <'a> Processor<'a> {
                 self.reg[31] += 2;
                 return false
             }
-            0x0200 => {
+            0x0200 => { //Logical
                 let toggles: (bool,bool,bool,bool) = ( //Z,F,R,I, see ISA for meanings
                     (instruction.0 & 0x0080) != 0,
                     (instruction.0 & 0x0040) != 0,
@@ -172,7 +172,7 @@ impl <'a> Processor<'a> {
                 self.reg[31] += 2;
                 return false
             }
-            0x0300 => {
+            0x0300 => { //Condition check
                 let toggles: (bool, bool) = ( //Flag specifier, Invert
                     (instruction.0 & 0x0080) != 0,
                     (instruction.0 & 0x0040) != 0
@@ -557,4 +557,37 @@ mod tests {
         assert_eq!(processor.reg[1], u16::MAX);
         assert_eq!(processor.reg[2], 5);
     }
+    #[test]
+    fn cond_eq() {
+        let mut memory = [0x0600, 3, 0x0608, 5, 0x0340, 0x0040, 0x0380, 0x0000, 0xF610, 5, 0, 0];
+        let mut disk = [0];
+        let mut vram = [0];
+        let mut processor = new(&mut memory, &mut disk, &mut vram);
+        loop {
+            if processor.run() {break};
+        }
+        assert_eq!(processor.reg[2], 5);
+    }
+    #[test]
+    fn cond_lt() {
+        let mut memory = [0x0600, 3, 0x0608, 5, 0x0310, 0x0040, 0xA610, 5, 0, 0];
+        let mut disk = [0];
+        let mut vram = [0];
+        let mut processor = new(&mut memory, &mut disk, &mut vram);
+        loop {
+            if processor.run() {break};
+        }
+        assert_eq!(processor.reg[2], 5);
+    }
+    #[test]
+    fn cond_lte() {
+        let mut memory = [0x0600, 3, 0x0608, 5, 0x0360, 0x0040, 0x03E0, 0x0000, 0xF610, 5, 0, 0];
+        let mut disk = [0];
+        let mut vram = [0];
+        let mut processor = new(&mut memory, &mut disk, &mut vram);
+        loop {
+            if processor.run() {break};
+        }
+        assert_eq!(processor.reg[2], 5);
+    }
 }
-- 
2.43.4