Begin of waku v2 rpc tests (#210)

tests/all_tests_v2.nim

@@ -4,4 +4,5 @@ import
   # ./v2/test_waku,
   ./v2/test_wakunode,
   ./v2/test_waku_store,
-  ./v2/test_waku_filter
+  ./v2/test_waku_filter,
+  ./v2/test_rpc_waku

tests/v2/test_rpc_waku.nim

@@ -0,0 +1,43 @@
+{.used.}
+
+import
+  std/[unittest, options, os, strutils],
+  stew/shims/net as stewNet,
+  json_rpc/[rpcserver, rpcclient],
+  libp2p/crypto/crypto,
+  ../../waku/node/v2/[waku_types, wakunode2],
+  ../../waku/node/v2/rpc/wakurpc,
+  ../../waku/protocol/v2/waku_relay,
+  ../test_helpers
+
+template sourceDir*: string = currentSourcePath.rsplit(DirSep, 1)[0]
+const sigPath = sourceDir / ParDir / ParDir / "waku" / "node" / "v2" / "rpc" / "wakucallsigs.nim"
+createRpcSigs(RpcHttpClient, sigPath)
+
+suite "Waku v2 Remote Procedure Calls":
+  # WakuNode setup
+  let
+    rng = crypto.newRng()
+    privkey = crypto.PrivateKey.random(Secp256k1, rng[]).tryGet()
+    bindIp = ValidIpAddress.init("0.0.0.0")
+    extIp = ValidIpAddress.init("127.0.0.1")
+    port = Port(9000)
+    node = WakuNode.init(privkey, bindIp, port, some(extIp), some(port), @["waku"])
+
+  waitFor node.start()
+
+  # RPC server setup
+  let
+    rpcPort = Port(8545)
+    ta = initTAddress(bindIp, rpcPort)
+    server = newRpcHttpServer([ta])
+
+  setupWakuRPC(node, server)
+  server.start()
+
+  asyncTest "waku_info":
+    # RPC client setup
+    let client = newRpcHttpClient()
+    await client.connect("127.0.0.1", rpcPort)
+
+    check await(client.waku_version()) == WakuRelayCodec