Restoring older versions works

src/repository.rs

@@ -86,6 +86,20 @@ impl<'a> Repository<'a> {
         Ok(hasher.result().as_slice().into())
     }
 
+    pub fn item_by_source_path_and_version(
+        &self,
+        path: &Path,
+        version: &ItemVersion,
+    ) -> Result<Option<RepositoryItem>, BakareError> {
+        if !path.is_absolute() {
+            return Err(BakareError::RepositoryPathNotAbsolute);
+        }
+
+        Ok(self
+            .iter()
+            .find(|i| i.original_source_path() == path && i.version() == version))
+    }
+
     pub fn item_by_source_path(&self, path: &Path) -> Result<Option<RepositoryItem>, BakareError> {
         if !path.is_absolute() {
             return Err(BakareError::RepositoryPathNotAbsolute);

src/repository_item.rs

@@ -38,6 +38,7 @@ impl RepositoryItem {
         if !self.absolute_path.exists() {
             return Err(BakareError::CorruptedRepoNoFile);
         }
+        println!("restoring {} to {}", &self.absolute_path.display(), &target_path.display());
         fs::copy(&self.absolute_path, &target_path)?;
 
         Ok(())

src/restore.rs

@@ -25,14 +25,8 @@ impl<'a> Engine<'a> {
         Ok(())
     }
 
-    fn restore(&self, item: &RepositoryItem) -> Result<(), BakareError> {
+    pub fn restore(&self, item: &RepositoryItem) -> Result<(), BakareError> {
-        println!("restoring {}", item);
         item.save(self.target_path)?;
         Ok(())
     }
-
-    pub fn restore_as_of_version(&self, item: &RepositoryItem, version: &ItemVersion) -> Result<(), BakareError> {
-        println!("restoring {}", item);
-        Ok(())
-    }
 }

tests/system_tests.rs

@@ -71,11 +71,13 @@ fn restore_older_version_of_file() -> Result<(), BakareError> {
         backup_engine.backup()?;
     }
 
+    let old_version = {
         let reading_repository = Repository::open(repository_path.as_path())?;
         let item = reading_repository.item_by_source_path(&file_path)?;
         assert!(item.is_some());
         let item = item.unwrap();
-    let old_version = item.version();
+        item.version().clone()
+    };
 
     {
         let new_contents = "totally new contents";
@@ -88,14 +90,17 @@ fn restore_older_version_of_file() -> Result<(), BakareError> {
     let restore_repository = Repository::open(repository_path.as_path())?;
     let restore_target = tempdir()?;
     let restore_engine = restore::Engine::new(&restore_repository, &restore_target.path())?;
-    restore_engine.restore_as_of_version(&item, old_version)?;
+    let old_item = restore_repository.item_by_source_path_and_version(&file_path, &old_version)?;
+    restore_engine.restore(&old_item.unwrap())?;
 
-    assert_target_file_contents(restore_target.path(), relative_path_text, old_contents)
+    let source_file_full_path = source.file_path(relative_path_text);
+    let restored_file_path = restore_target.path().join(source_file_full_path.strip_prefix("/")?);
+    assert_target_file_contents(&restored_file_path, old_contents)
 }
 
-fn assert_target_file_contents(target: &Path, filename: &str, expected_contents: &str) -> Result<(), BakareError> {
+fn assert_target_file_contents(restored_path: &Path, expected_contents: &str) -> Result<(), BakareError> {
-    let restored_path = target.join(filename);
     let mut actual_contents = String::new();
+    assert!(restored_path.exists(), "Expected '{}' to be there", restored_path.display());
     File::open(restored_path)?.read_to_string(&mut actual_contents)?;
     assert_eq!(expected_contents, actual_contents);
     Ok(())