candidate compound assignment implementation

src/tests.rs

@@ -560,3 +560,132 @@ fn test_decrement() {
         assert!(true);
     }
 }
+
+#[test]
+fn test_or_equals() {
+    let mut engine = Engine::new();
+
+    if let Ok(result) = engine.eval::<i64>("let x = 16; x |= 74; x") {
+        assert_eq!(result, 90);
+    } else {
+        assert!(false);
+    }
+
+    if let Ok(result) = engine.eval::<bool>("let x = true; x |= false; x") {
+        assert!(result);
+    } else {
+        assert!(false);
+    }
+
+    if let Ok(result) = engine.eval::<bool>("let x = false; x |= true; x") {
+        assert!(result);
+    } else {
+        assert!(false);
+    }
+}
+
+#[test]
+fn test_and_equals() {
+    let mut engine = Engine::new();
+
+    if let Ok(result) = engine.eval::<i64>("let x = 16; x &= 31; x") {
+        assert_eq!(result, 16);
+    } else {
+        assert!(false);
+    }
+
+    if let Ok(result) = engine.eval::<bool>("let x = true; x &= false; x") {
+        assert_eq!(result, false);
+    } else {
+        assert!(false);
+    }
+
+    if let Ok(result) = engine.eval::<bool>("let x = false; x &= true; x") {
+        assert_eq!(result, false);
+    } else {
+        assert!(false);
+    }
+
+    if let Ok(result) = engine.eval::<bool>("let x = true; x &= true; x") {
+        assert!(result);
+    } else {
+        assert!(false);
+    }
+}
+
+#[test]
+fn test_xor_equals() {
+    let mut engine = Engine::new();
+
+    if let Ok(result) = engine.eval::<i64>("let x = 90; x ^= 12; x") {
+        assert_eq!(result, 86);
+    } else {
+        assert!(false);
+    }
+}
+
+#[test]
+fn test_multiply_equals() {
+    let mut engine = Engine::new();
+
+    if let Ok(result) = engine.eval::<i64>("let x = 2; x *= 3; x") {
+        assert_eq!(result, 6);
+    } else {
+        assert!(false);
+    }
+}
+
+#[test]
+fn test_divide_equals() {
+    let mut engine = Engine::new();
+
+    if let Ok(result) = engine.eval::<i64>("let x = 6; x /= 2; x") {
+        assert_eq!(result, 3);
+    } else {
+        assert!(false);
+    }
+}
+
+#[test]
+fn test_left_shift() {
+    let mut engine = Engine::new();
+
+    if let Ok(result) = engine.eval::<i64>("4 << 2") {
+        assert_eq!(result, 16);
+    } else {
+        assert!(false);
+    }
+}
+
+#[test]
+fn test_right_shift() {
+    let mut engine = Engine::new();
+
+    if let Ok(result) = engine.eval::<i64>("9 >> 1") {
+        assert_eq!(result, 4);
+    } else {
+        assert!(false);
+    }
+}
+
+#[test]
+fn test_left_shift_equals() {
+    let mut engine = Engine::new();
+
+    if let Ok(result) = engine.eval::<i64>("let x = 9; x >>=1; x") {
+        assert_eq!(result, 4);
+    } else {
+        assert!(false);
+    }
+}
+
+#[test]
+fn test_right_shift_equals() {
+    let mut engine = Engine::new();
+
+    if let Ok(result) = engine.eval::<i64>("let x = 4; x<<= 2; x") {
+        assert_eq!(result, 16);
+    } else {
+        assert!(false);
+    }
+}