fix shared-db tenant runtime gaps

server/im_http_test.go

@@ -265,6 +265,7 @@ type testProfilesStore struct {
 
 type testAppReleaseStore struct {
 	release *types.AppRelease
+	err     error
 }
 
 type testDevicePushTokenStore struct {
@@ -756,6 +757,9 @@ func (s *testProfilesStore) UpdatePrivacy(_ types.TenantID, uid types.Uid, patch
 }
 
 func (s *testAppReleaseStore) Latest(platform, channel string) (*types.AppRelease, error) {
+	if s.err != nil {
+		return nil, s.err
+	}
 	if s.release == nil {
 		now := time.Now().UTC().Round(time.Millisecond)
 		s.release = &types.AppRelease{
@@ -2742,6 +2746,26 @@ func TestServeIMAppReleaseLatestSupportsWeb(t *testing.T) {
 	}
 }
 
+func TestServeIMAppReleaseLatestFallsBackForWebConfigError(t *testing.T) {
+	oldReleases := store.AppReleases
+	store.AppReleases = &testAppReleaseStore{err: types.ErrUnsupported}
+	defer func() {
+		store.AppReleases = oldReleases
+	}()
+
+	req := httptest.NewRequest(http.MethodGet, "/v1/im/app/releases/latest?platform=web&current_version=1.0.0", nil)
+	rec := httptest.NewRecorder()
+	serveIMAppReleaseLatest(rec, req)
+
+	if rec.Code != http.StatusOK {
+		t.Fatalf("status: got %d, want %d; body=%s", rec.Code, http.StatusOK, rec.Body.String())
+	}
+	data := decodeIMHTTPResponse(t, rec).Data.(map[string]any)
+	if data["platform"] != "web" || data["latest_version"] != "1.0.0" || data["update_type"] != "none" || data["has_update"] != false {
+		t.Fatalf("unexpected fallback release payload: %#v", data)
+	}
+}
+
 func TestServeIMAppReleaseLatestForcesUnsupportedVersion(t *testing.T) {
 	oldReleases := store.AppReleases
 	store.AppReleases = &testAppReleaseStore{release: &types.AppRelease{