Huobi: Fix invalid contract type err when autoUpdatePairs is false

We were relying on autoUpdatePairs to fetch contract types before we
need them. If the user disables it in config, we'll get them upfront.

exchanges/huobi/huobi_test.go

@@ -2991,3 +2991,19 @@ func TestChannelName(t *testing.T) {
 	assert.Panics(t, func() { channelName(&subscription.Subscription{Channel: wsOrderbookChannel}, p) })
 	assert.Panics(t, func() { channelName(&subscription.Subscription{Channel: subscription.MyAccountChannel}, p) }, "Should panic on V2 endpoints until implemented")
 }
+
+func TestBootstrap(t *testing.T) {
+	t.Parallel()
+	h := new(HUOBI)
+	require.NoError(t, testexch.Setup(h), "Test Instance Setup must not fail")
+
+	c, err := h.Bootstrap(context.Background())
+	require.NoError(t, err)
+	assert.True(t, c, "Bootstrap should return true to continue")
+
+	h.futureContractCodes = nil
+	h.Features.Enabled.AutoPairUpdates = false
+	_, err = h.Bootstrap(context.Background())
+	require.NoError(t, err)
+	require.NotNil(t, h.futureContractCodes)
+}

exchanges/huobi/huobi_wrapper.go

@@ -187,6 +187,17 @@ func (h *HUOBI) SetDefaults() {
 	h.WebsocketOrderbookBufferLimit = exchange.DefaultWebsocketOrderbookBufferLimit
 }
 
+// Bootstrap ensures that future contract expiry codes are loaded if AutoPairUpdates is not enabled
+func (h *HUOBI) Bootstrap(_ context.Context) (continueBootstrap bool, err error) {
+	continueBootstrap = true
+
+	if !h.GetEnabledFeatures().AutoPairUpdates && h.SupportsAsset(asset.Futures) {
+		_, err = h.FetchTradablePairs(context.Background(), asset.Futures)
+	}
+
+	return
+}
+
 // Setup sets user configuration
 func (h *HUOBI) Setup(exch *config.Exchange) error {
 	err := exch.Validate()