initial skeleton

crates/aim-core/tests/update_planning.rs

@@ -0,0 +1,22 @@
+use aim_core::app::update::build_update_plan;
+use aim_core::domain::app::AppRecord;
+
+#[test]
+fn empty_registry_produces_empty_plan() {
+    let plan = build_update_plan(&[]).unwrap();
+
+    assert!(plan.items.is_empty());
+}
+
+#[test]
+fn installed_apps_are_carried_into_review_plan() {
+    let apps = [AppRecord {
+        stable_id: "bat".to_owned(),
+        display_name: "Bat".to_owned(),
+    }];
+
+    let plan = build_update_plan(&apps).unwrap();
+
+    assert_eq!(plan.items.len(), 1);
+    assert_eq!(plan.items[0].stable_id, "bat");
+}