add basic tests

src/ptr.rs

@@ -82,4 +82,30 @@ pub use _to_ptr_own_ref as to_own_ref;
 #[cfg(test)]
 mod tests {
 	use super::*;
+
+	#[test]
+	fn test_ref() {
+		let obj = "some string".to_string();
+		to_own_ref!(obj);
+		assert_eq!(*obj, "some string");
+	}
+
+	#[test]
+	fn test_mut() {
+		let obj = b"some string".to_vec();
+		to_own_ref!(mut obj);
+		obj[0] = b'm';
+		obj[1] = b'o';
+		obj[2] = b'r';
+		obj[3] = b'e';
+		assert_eq!(*obj, b"more string");
+	}
+
+	#[test]
+	fn test_take() {
+		let obj = "some string".to_string();
+		to_own_ref!(obj);
+		let s: String = obj.take();
+		assert_eq!(s, "some string");
+	}
 }