test: add tests implementations for catalog init

01.workspace/heave/src/str/catalog.rs

@@ -248,19 +248,52 @@ mod tests {
     #[test]
     fn init_should_create_db_file_if_not_exists() {
         // Should create the SQLite database file if it doesn't exist.
-        todo!();
+        let db_path = "target/test_dbs/init_should_create_db_file_if_not_exists.db";
+        let path = std::path::Path::new(db_path);
+        // Ensure the directory exists
+        std::fs::create_dir_all(path.parent().unwrap()).unwrap();
+        // Ensure the file does not exist before the test
+        if path.exists() {
+            std::fs::remove_file(path).unwrap();
+        }
+        let catalog = Catalog::new(db_path);
+        let result = catalog.init();
+        assert!(result.is_ok());
+        assert!(path.exists());
+        // Clean up the created file
+        std::fs::remove_file(path).unwrap();
     }
 
     #[test]
     fn init_should_not_fail_if_db_file_exists() {
         // Should not fail if the database file already exists.
-        todo!();
+        let db_path = "target/test_dbs/init_should_not_fail_if_db_file_exists.db";
+        let path = std::path::Path::new(db_path);
+        // Ensure the directory exists
+        std::fs::create_dir_all(path.parent().unwrap()).unwrap();
+        // Create the DB file first
+        let catalog = Catalog::new(db_path);
+        catalog.init().unwrap();
+        // Calling init() again should not fail
+        let result = catalog.init();
+        assert!(result.is_ok());
+        assert!(path.exists());
+        // Clean up
+        std::fs::remove_file(path).unwrap();
     }
 
     #[test]
     fn init_should_return_error_for_invalid_path() {
         // Should return an error for an invalid path or permissions issue.
-        todo!();
+        // Using a directory as a path should fail.
+        let invalid_path = "target/test_dbs/an_invalid_path_dir";
+        std::fs::create_dir_all(invalid_path).unwrap();
+        let catalog = Catalog::new(invalid_path);
+        let result = catalog.init();
+        assert!(result.is_err());
+        assert_eq!(result.unwrap_err(), FailedTo::InitDatabase);
+        // Clean up
+        std::fs::remove_dir_all(invalid_path).unwrap();
     }
 
     // ## 'insert()' & 'insert_many()'