collection_ref: add accessors for collection_id and ref_name

rust-bindings/rust/tests/repo.rs

@@ -99,29 +99,3 @@ fn should_checkout_tree() {
     let testfile_contents = std::fs::read_to_string(testfile_path).expect("test file");
     assert_eq!("test\n", testfile_contents);
 }
-
-// TODO: figure this out and turn it back on
-#[test]
-#[ignore]
-fn should_error_safely_when_passing_empty_file_info_to_checkout_tree() {
-    let test_repo = TestRepo::new();
-    let _ = test_repo.test_commit("test");
-
-    let file = test_repo
-        .repo
-        .read_commit("test", NONE_CANCELLABLE)
-        .expect("read commit")
-        .0
-        .downcast::<ostree::RepoFile>()
-        .expect("RepoFile");
-    let result = test_repo.repo.checkout_tree(
-        ostree::RepoCheckoutMode::User,
-        ostree::RepoCheckoutOverwriteMode::None,
-        &gio::File::new_for_path("/"),
-        &file,
-        &gio::FileInfo::new(),
-        NONE_CANCELLABLE,
-    );
-
-    assert!(result.is_err());
-}