ostree/cargo: bump to ostree-sys 0.9.2

rust-bindings/tests/sign/mod.rs

@@ -0,0 +1,21 @@
+use ostree::prelude::*;
+use ostree::{gio, glib};
+
+#[test]
+fn sign_api_should_work() {
+    let dummy_sign = ostree::Sign::by_name("dummy").unwrap();
+    assert_eq!(dummy_sign.name().unwrap(), "dummy");
+
+    let result = ostree::prelude::SignExt::data(
+        &dummy_sign,
+        &glib::Bytes::from_static(b"1234"),
+        gio::NONE_CANCELLABLE,
+    );
+    assert!(result.is_err());
+
+    let result = dummy_sign.data_verify(&glib::Bytes::from_static(b"1234"), &"1234".to_variant());
+    assert!(result.is_err());
+
+    let result = ostree::Sign::by_name("NOPE");
+    assert!(result.is_err());
+}