0.0.2-alpha.3

crates/knowledge-git-lib/unit_tests/backend.rs

@@ -1,5 +1,5 @@
 // file: crates/knowledge-git-lib/unit_tests/backend.rs
-// version: 3
+// version: 4
 
 #[derive(Clone)]
 struct RecordingRunner {
@@ -72,6 +72,34 @@ fn backend_configuration_requires_non_empty_paths() {
     return;
 }
 
+#[test]
+fn duplicate_source_registration_is_rejected() {
+    let root = test_root("duplicate-source");
+    let config_result = crate::GitBackendConfig::new(root.clone());
+    assert!(config_result.is_ok());
+    let config = match config_result {
+        Ok(value) => value,
+        Err(_) => return,
+    };
+    let source_id_result = source_id("pgr");
+    assert!(source_id_result.is_some());
+    let source_id = match source_id_result {
+        Some(value) => value,
+        None => return,
+    };
+    let source_result = crate::GitSourceConfig::local(source_id, std::path::PathBuf::from("/controlled/source"));
+    assert!(source_result.is_ok());
+    let source = match source_result {
+        Ok(value) => value,
+        Err(_) => return,
+    };
+    let mut backend = crate::GitBackend::new(config);
+    assert_eq!(backend.register_source(source.clone()), Ok(()));
+    assert_eq!(backend.register_source(source), Err(crate::GitBackendError::DuplicateSource));
+    let _ = std::fs::remove_dir_all(root);
+    return;
+}
+
 #[test]
 fn source_key_never_interpolates_raw_source_identifier_as_a_path() {
     let source_result = source_id("../pgr/credential:value");