Implement ostree::checksum_file_at

rust-bindings/rust/tests/functions/checksum_file_at.rs

@@ -0,0 +1,27 @@
+use gio::NONE_CANCELLABLE;
+use ostree::{checksum_file_at, ChecksumFlags, ObjectType, RepoMode};
+use std::path::PathBuf;
+use util::TestRepo;
+
+#[test]
+fn should_checksum_file_at() {
+    let repo = TestRepo::new_with_mode(RepoMode::BareUser);
+    repo.test_commit("test");
+
+    let result = checksum_file_at(
+        repo.repo.get_dfd(),
+        &PathBuf::from(
+            "objects/89/f84ca9854a80e85b583e46a115ba4985254437027bad34f0b113219323d3f8.file",
+        ),
+        None,
+        ObjectType::File,
+        ChecksumFlags::IGNORE_XATTRS,
+        NONE_CANCELLABLE,
+    )
+    .expect("checksum file at");
+
+    assert_eq!(
+        result.as_str(),
+        "89f84ca9854a80e85b583e46a115ba4985254437027bad34f0b113219323d3f8",
+    );
+}

rust-bindings/rust/tests/functions/mod.rs

@@ -1,8 +1,12 @@
 use gio::NONE_CANCELLABLE;
-use glib::Cast;
-use ostree::{checksum_file, checksum_file_from_input, ObjectType, RepoFile, RepoFileExt};
+use glib::prelude::*;
+use ostree::prelude::*;
+use ostree::{checksum_file, checksum_file_from_input, ObjectType, RepoFile};
 use util::TestRepo;
 
+#[cfg(feature = "v2017_13")]
+mod checksum_file_at;
+
 #[test]
 fn should_checksum_file() {
     let repo = TestRepo::new();