Use default rust directory structure for tests

tests/number_literals.rs

@@ -0,0 +1,65 @@
+extern crate rhai;
+
+use rhai::Engine;
+
+#[test]
+fn test_number_literal() {
+    let mut engine = Engine::new();
+
+    if let Ok(result) = engine.eval::<i64>("65") {
+        assert_eq!(result, 65);
+    } else {
+        assert!(false);
+    }
+}
+
+#[test]
+fn test_hex_literal() {
+    let mut engine = Engine::new();
+
+    if let Ok(result) = engine.eval::<i64>("let x = 0xf; x") {
+        assert_eq!(result, 15);
+    } else {
+        assert!(false);
+    }
+
+    if let Ok(result) = engine.eval::<i64>("let x = 0xff; x") {
+        assert_eq!(result, 255);
+    } else {
+        assert!(false);
+    }
+}
+
+#[test]
+fn test_octal_literal() {
+    let mut engine = Engine::new();
+
+    if let Ok(result) = engine.eval::<i64>("let x = 0o77; x") {
+        assert_eq!(result, 63);
+    } else {
+        assert!(false)
+    }
+
+    if let Ok(result) = engine.eval::<i64>("let x = 0o1234; x") {
+        assert_eq!(result, 668);
+    } else {
+        assert!(false);
+    }
+}
+
+#[test]
+fn test_binary_literal() {
+    let mut engine = Engine::new();
+
+    if let Ok(result) = engine.eval::<i64>("let x = 0b1111; x") {
+        assert_eq!(result, 15);
+    } else {
+        assert!(false);
+    }
+
+    if let Ok(result) = engine.eval::<i64>("let x = 0b0011_1100_1010_0101; x") {
+        assert_eq!(result, 15525);
+    } else {
+        assert!(false);
+    }
+}