test: Add regression test about undoing status change from untriaged

Author: florentc

src/webview/tests/test_undo.py

@@ -0,0 +1,26 @@
+from django.urls import reverse
+from playwright.sync_api import Page, expect
+from pytest_django.live_server_helper import LiveServer
+
+from shared.models.linkage import CVEDerivationClusterProposal
+
+
+def test_undo_status_change_from_untriaged(
+    live_server: LiveServer,
+    as_staff: Page,
+    cached_suggestion: CVEDerivationClusterProposal,
+    no_js: bool,
+) -> None:
+    """Test undoing a status change from untriaged restores the suggestion to untriaged"""
+    if not no_js:
+        as_staff.goto(
+            live_server.url + reverse("webview:suggestion:untriaged_suggestions")
+        )
+        suggestion = as_staff.locator(f"#suggestion-{cached_suggestion.pk}")
+        accept = suggestion.get_by_role("button", name="Accept")
+        accept.click()
+        undo = suggestion.get_by_role("button", name="Undo")
+        undo.click()
+        expect(suggestion).to_be_visible()
+        # We check that we are back to untriaged status from the presence of the Accept button
+        expect(accept).to_be_visible()