multi: move itest out of lntest

This commit moves all the test cases living in `itest` out of `lntest`,
further making `lntest` an independent package for general testing.

itest/lnd_neutrino_test.go

@@ -0,0 +1,33 @@
+package itest
+
+import (
+	"github.com/lightningnetwork/lnd/lnrpc/neutrinorpc"
+	"github.com/lightningnetwork/lnd/lntemp"
+	"github.com/lightningnetwork/lnd/lntest"
+	"github.com/stretchr/testify/require"
+)
+
+// testNeutrino checks that the neutrino sub-server can fetch compact
+// block filters, server status and connect to a connected peer.
+func testNeutrino(ht *lntemp.HarnessTest) {
+	if ht.ChainBackendName() != lntest.NeutrinoBackendName {
+		ht.Skipf("skipping test for non neutrino backends")
+	}
+
+	// Check if the neutrino sub server is running.
+	statusRes := ht.Alice.RPC.Status(nil)
+	require.True(ht, statusRes.Active)
+	require.Len(ht, statusRes.Peers, 1, "unable to find a peer")
+
+	// Request the compact block filter of the best block.
+	cFilterReq := &neutrinorpc.GetCFilterRequest{
+		Hash: statusRes.GetBlockHash(),
+	}
+	ht.Alice.RPC.GetCFilter(cFilterReq)
+
+	// Try to reconnect to a connected peer.
+	addPeerReq := &neutrinorpc.AddPeerRequest{
+		PeerAddrs: statusRes.Peers[0],
+	}
+	ht.Alice.RPC.AddPeer(addPeerReq)
+}