Implement update execution and provider contract

crates/aim-core/tests/adapter_contract.rs

@@ -1,5 +1,6 @@
 use aim_core::adapters::github::GitHubAdapter;
-use aim_core::adapters::traits::AdapterCapabilities;
+use aim_core::adapters::gitlab::GitLabAdapter;
+use aim_core::adapters::traits::{AdapterCapabilities, SourceAdapter};
 
 #[test]
 fn adapter_capabilities_can_report_exact_resolution_only() {
@@ -9,10 +10,27 @@ fn adapter_capabilities_can_report_exact_resolution_only() {
 
 #[test]
 fn legacy_github_adapter_delegates_to_source_pipeline() {
-    let adapter = GitHubAdapter;
+    let adapter: &dyn SourceAdapter = &GitHubAdapter;
 
     let result = adapter.normalize("sharkdp/bat").unwrap();
 
     assert_eq!(result.normalized_kind.as_str(), "github-repository");
     assert_eq!(result.canonical_locator.as_deref(), Some("sharkdp/bat"));
+
+    let resolution = adapter.resolve(&result).unwrap();
+    assert_eq!(resolution.release.version, "latest");
+}
+
+#[test]
+fn gitlab_adapter_normalizes_and_resolves_through_trait() {
+    let adapter: &dyn SourceAdapter = &GitLabAdapter;
+
+    let result = adapter
+        .normalize("https://gitlab.com/example/team/app")
+        .unwrap();
+
+    assert_eq!(result.kind.as_str(), "gitlab");
+
+    let resolution = adapter.resolve(&result).unwrap();
+    assert_eq!(resolution.release.version, "latest");
 }

crates/aim-core/tests/update_planning.rs

@@ -1,6 +1,7 @@
-use aim_core::app::update::build_update_plan;
-use aim_core::domain::app::AppRecord;
+use aim_core::app::update::{build_update_plan, execute_updates};
+use aim_core::domain::app::{AppRecord, InstallMetadata, InstallScope};
 use aim_core::domain::update::{ChannelPreference, UpdateChannelKind, UpdateStrategy};
+use tempfile::tempdir;
 
 #[test]
 fn empty_registry_produces_empty_plan() {
@@ -61,3 +62,29 @@ fn update_plan_uses_alternate_channel_after_preferred_failure() {
     );
     assert_eq!(plan.items[0].selection_reason, "preferred-channel-failed");
 }
+
+#[test]
+fn failed_update_keeps_previous_app_record() {
+    let install_home = tempdir().unwrap();
+    let previous = AppRecord {
+        stable_id: "legacy-bat".to_owned(),
+        display_name: "Legacy Bat".to_owned(),
+        source_input: None,
+        source: None,
+        installed_version: Some("0.9.0".to_owned()),
+        update_strategy: None,
+        metadata: Vec::new(),
+        install: Some(InstallMetadata {
+            scope: InstallScope::User,
+            payload_path: None,
+            desktop_entry_path: None,
+            icon_path: None,
+        }),
+    };
+
+    let result = execute_updates(std::slice::from_ref(&previous), install_home.path()).unwrap();
+
+    assert_eq!(result.apps, vec![previous]);
+    assert_eq!(result.updated_count(), 0);
+    assert_eq!(result.failed_count(), 1);
+}