test: add edge case coverage for nonexistent groupId in GroupSelection

Verify that subtreeIds returns empty set and toggling returns current unchanged when groupId is not found in the tree. Co-Authored-By: Claude Haiku 4.5 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01WYqycDFsynHH9VnnK7LNSf
2026-09-19 16:59:37 +02:00
parent 62835dcd38
commit fe8b569753
1 changed files with 15 additions and 0 deletions
@@ -39,4 +39,19 @@ final class GroupSelectionTests: XCTestCase {
        let result = GroupSelection.toggling(work.id, in: root, current: [personal.id])
        XCTAssertEqual(result, [personal.id, work.id, email.id])
    }
+
+    func test_subtreeIds_groupNotFound_returnsEmptySet() {
+        let (root, _, _, _) = makeSampleTree()
+        let nonExistentId = UUID()
+        let ids = GroupSelection.subtreeIds(of: nonExistentId, in: root)
+        XCTAssertEqual(ids, [])
+    }
+
+    func test_toggling_groupNotFound_returnsCurrentUnchanged() {
+        let (root, _, _, personal) = makeSampleTree()
+        let nonExistentId = UUID()
+        let current: Set<UUID> = [personal.id]
+        let result = GroupSelection.toggling(nonExistentId, in: root, current: current)
+        XCTAssertEqual(result, current)
+    }
 }