test: -norpccookiefile

Both bitcoind and bitcoin-cli.

test/functional/interface_bitcoin_cli.py

@@ -164,6 +164,9 @@ class TestBitcoinCli(BitcoinTestFramework):
         self.log.info("Test connecting with non-existing RPC cookie file")
         assert_raises_process_error(1, "Could not locate RPC credentials", self.nodes[0].cli('-rpccookiefile=does-not-exist', '-rpcpassword=').echo)
 
+        self.log.info("Test connecting without RPC cookie file and with password arg")
+        assert_equal(BLOCKS, self.nodes[0].cli('-norpccookiefile', f'-rpcuser={user}', f'-rpcpassword={password}').getblockcount())
+
         self.log.info("Test -getinfo with arguments fails")
         assert_raises_process_error(1, "-getinfo takes no arguments", self.nodes[0].cli('-getinfo').help)