Handle break and return better.

tests/looping.rs

@@ -1,27 +1,29 @@
-use rhai::{Engine, EvalAltResult};
+use rhai::{Engine, EvalAltResult, INT};
 
 #[test]
 fn test_loop() -> Result<(), EvalAltResult> {
     let mut engine = Engine::new();
 
-    assert!(engine.eval::<bool>(
-        r"
-			let x = 0;
-			let i = 0;
+    assert_eq!(
+        engine.eval::<INT>(
+            r"
+				let x = 0;
+				let i = 0;
 
-			loop {
-				if i < 10 {
-					x = x + i;
-					i = i + 1;
+				loop {
+					if i < 10 {
+						x = x + i;
+						i = i + 1;
+					} else {
+						break;
+					}
 				}
-				else {
-					break;
-				}
-			}
 
-			x == 45
+				return x;
 		"
-    )?);
+        )?,
+        45
+    );
 
     Ok(())
 }

tests/throw.rs

@@ -9,6 +9,6 @@ fn test_throw() {
         EvalAltResult::ErrorRuntime(s, _) if s == "hello"));
 
     assert!(matches!(
-        engine.eval::<()>(r#"throw;"#).expect_err("expects error"),
+        engine.eval::<()>(r#"throw"#).expect_err("expects error"),
         EvalAltResult::ErrorRuntime(s, _) if s == ""));
 }