client/setec: add a test for a negative PollInterval

client/setec/internal_test.go

@@ -75,3 +75,32 @@ func TestWatcher(t *testing.T) {
 		// OK
 	}
 }
+
+func TestPollDisabled(t *testing.T) {
+	d := setectest.NewDB(t, nil)
+	d.MustPut(d.Superuser, "full plate", "and packing steel")
+
+	ts := setectest.NewServer(t, d, nil)
+	hs := httptest.NewServer(ts.Mux)
+	defer hs.Close()
+
+	st, err := NewStore(t.Context(), StoreConfig{
+		Client:       Client{Server: hs.URL, DoHTTP: hs.Client().Do},
+		Secrets:      []string{"full plate"},
+		PollInterval: -1, // disabled
+	})
+	if err != nil {
+		t.Fatalf("NewStore: unexpected error: %v", err)
+	}
+	defer st.Close()
+
+	// Polling should be disabled, which we check by examining the channel that
+	// ordinarily is closed when the poll goroutine exits. When polling is not
+	// enabled, it should be closed immediately upon construction.
+	select {
+	case <-st.done:
+		t.Log("Polling is correctly disabled")
+	default:
+		t.Error("Polling is unexpectedly enabled")
+	}
+}