fix fullethereumservice spec

packages/client/test/service/fullethereumservice.spec.ts

@@ -1,5 +1,7 @@
 import { Common } from '@ethereumjs/common'
 import { Log } from '@ethereumjs/evm/dist/types'
+import { isTruthy } from '@ethereumjs/util'
+
 import * as tape from 'tape'
 import * as td from 'testdouble'
 
@@ -75,12 +77,18 @@ tape('[FullEthereumService]', async (t) => {
     let config = new Config({ transports: [] })
     const chain = new Chain({ config })
     let service = new FullEthereumService({ config, chain })
-    t.ok(service.protocols[0] instanceof EthProtocol, 'full protocol')
-    t.notOk(service.protocols[1], 'no light protocol')
+    t.ok(isTruthy(service.protocols.filter((p) => p instanceof EthProtocol)[0]), 'full protocol')
+    t.notOk(
+      isTruthy(service.protocols.filter((p) => p instanceof LesProtocol)[0]),
+      'no light protocol'
+    )
     config = new Config({ transports: [], lightserv: true })
     service = new FullEthereumService({ config, chain })
-    t.ok(service.protocols[0] instanceof EthProtocol, 'full protocol')
-    t.ok(service.protocols[1] instanceof LesProtocol, 'lightserv protocols')
+    t.ok(isTruthy(service.protocols.filter((p) => p instanceof EthProtocol)[0]), 'full protocol')
+    t.ok(
+      isTruthy(service.protocols.filter((p) => p instanceof LesProtocol)[0]),
+      'lightserv protocols'
+    )
     t.end()
   })