1 files changed, 93 insertions, 0 deletions
diff --git a/workhorse/cable_test.go b/workhorse/cable_test.go
new file mode 100644
index 00000000000..7320837541a
--- /dev/null
+++ b/workhorse/cable_test.go
@@ -0,0 +1,93 @@
+package main
+
+import (
+	"net/http"
+	"net/http/httptest"
+	"net/url"
+	"regexp"
+	"testing"
+
+	"github.com/gorilla/websocket"
+	"github.com/stretchr/testify/require"
+
+	"gitlab.com/gitlab-org/gitlab-workhorse/internal/config"
+	"gitlab.com/gitlab-org/gitlab-workhorse/internal/helper"
+	"gitlab.com/gitlab-org/gitlab-workhorse/internal/testhelper"
+)
+
+const cablePath = "/-/cable"
+
+func TestSingleBackend(t *testing.T) {
+	cableServerConns, cableBackendServer := startCableServer()
+	defer cableBackendServer.Close()
+
+	config := newUpstreamWithCableConfig(cableBackendServer.URL, "")
+	workhorse := startWorkhorseServerWithConfig(config)
+	defer workhorse.Close()
+
+	cableURL := websocketURL(workhorse.URL, cablePath)
+
+	client, _, err := dialWebsocket(cableURL, nil)
+	require.NoError(t, err)
+	defer client.Close()
+
+	server := (<-cableServerConns).conn
+	defer server.Close()
+
+	require.NoError(t, say(client, "hello"))
+	requireReadMessage(t, server, websocket.TextMessage, "hello")
+
+	require.NoError(t, say(server, "world"))
+	requireReadMessage(t, client, websocket.TextMessage, "world")
+}
+
+func TestSeparateCableBackend(t *testing.T) {
+	authBackendServer := testhelper.TestServerWithHandler(regexp.MustCompile(`.`), http.HandlerFunc(http.NotFound))
+	defer authBackendServer.Close()
+
+	cableServerConns, cableBackendServer := startCableServer()
+	defer cableBackendServer.Close()
+
+	config := newUpstreamWithCableConfig(authBackendServer.URL, cableBackendServer.URL)
+	workhorse := startWorkhorseServerWithConfig(config)
+	defer workhorse.Close()
+
+	cableURL := websocketURL(workhorse.URL, cablePath)
+
+	client, _, err := dialWebsocket(cableURL, nil)
+	require.NoError(t, err)
+	defer client.Close()
+
+	server := (<-cableServerConns).conn
+	defer server.Close()
+
+	require.NoError(t, say(client, "hello"))
+	requireReadMessage(t, server, websocket.TextMessage, "hello")
+
+	require.NoError(t, say(server, "world"))
+	requireReadMessage(t, client, websocket.TextMessage, "world")
+}
+
+func startCableServer() (chan connWithReq, *httptest.Server) {
+	upgrader := &websocket.Upgrader{}
+
+	connCh := make(chan connWithReq, 1)
+	server := testhelper.TestServerWithHandler(regexp.MustCompile(cablePath), webSocketHandler(upgrader, connCh))
+
+	return connCh, server
+}
+
+func newUpstreamWithCableConfig(authBackend string, cableBackend string) *config.Config {
+	var cableBackendURL *url.URL
+
+	if cableBackend != "" {
+		cableBackendURL = helper.URLMustParse(cableBackend)
+	}
+
+	return &config.Config{
+		Version:      "123",
+		DocumentRoot: testDocumentRoot,
+		Backend:      helper.URLMustParse(authBackend),
+		CableBackend: cableBackendURL,
+	}
+}