Add smoke test to objc-sys

objc-sys/src/lib.rs

@@ -71,3 +71,18 @@ pub use various::*;
 ///
 /// TODO: Replace this with `extern type` to also mark it as `!Sized`.
 type OpaqueData = PhantomData<(UnsafeCell<()>, *const UnsafeCell<()>, PhantomPinned)>;
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+    use std::ffi::CStr;
+
+    #[test]
+    fn smoke() {
+        // Verify that this library links and works fine by itself
+        let name = CStr::from_bytes_with_nul(b"abc:def:\0").unwrap();
+        let sel = unsafe { sel_registerName(name.as_ptr()) };
+        let rtn = unsafe { CStr::from_ptr(sel_getName(sel)) };
+        assert_eq!(name, rtn);
+    }
+}