query: test returns empty events and closed on relay closed

request.go

@@ -85,7 +85,7 @@ type terminateReason int
 
 const (
 	termSendFailed terminateReason = iota
-	termCloseSent
+	termClosedOnEOSE
 	termReceivedClosed
 	termDone
 	termCancelled
@@ -290,7 +290,7 @@ func (m *RequestManager) spawnSession(req *request, query bool) {
 			delete(m.sessions, req.id)
 			m.mu.Unlock()
 			m.sessionWg.Done()
-			if r == termReceivedClosed || r == termCloseSent {
+			if r == termReceivedClosed || r == termClosedOnEOSE {
 				req.deregisterOnce.Do(func() {
 					close(req.buffer)
 					close(req.closed)
@@ -461,7 +461,7 @@ func (s *session) run() {
 		case <-s.eose:
 			if s.closeOnEOSE {
 				s.send(envelope.EncloseClose(s.id))
-				s.terminate(termCloseSent)
+				s.terminate(termClosedOnEOSE)
 				return
 			}
 		case <-s.closed:

request_test.go

@@ -114,7 +114,7 @@ func TestRequestManager_Session(t *testing.T) {
 		Eventually(t, func() bool {
 			select {
 			case r := <-h.terminatedWith:
-				return r == termCloseSent
+				return r == termClosedOnEOSE
 			default:
 				return false
 			}
@@ -585,11 +585,32 @@ func TestRequestManager_Query(t *testing.T) {
 	})
 
 	t.Run("returns empty events and closed on relay closed", func(t *testing.T) {
-		// connect the envoy
-		// in a goroutine: inject a CLOSED envelope before any EVENT
-		// call Query
-		// assert the returned slice is empty
-		// assert closed is non-nil and contains the relay's reason string
+		p, envoy := newMockEnvoy(t)
+		p.connect()
+		Eventually(t, envoy.IsConnected, "envoy should be connected")
+
+		m := NewRequestManager(envoy)
+		t.Cleanup(func() { m.Close() })
+
+		filters := [][]byte{[]byte(`{}`)}
+		const reason = "rate-limited: slow down"
+
+		go func() {
+			reqBytes := <-p.sent
+			subID, _, err := envelope.FindReq(reqBytes)
+			if err != nil {
+				t.Errorf("FindReq: %v", err)
+				return
+			}
+			p.receive(envelope.EncloseClosed(subID, reason))
+		}()
+
+		events, closed := m.Query(filters, TestTimeout)
+
+		assert.Empty(t, events)
+		if assert.NotNil(t, closed) {
+			assert.Equal(t, reason, closed.Data)
+		}
 	})
 
 	t.Run("returns partial events on timeout", func(t *testing.T) {