cli: add nep11 import command

cli/nep11_test.go

@@ -0,0 +1,41 @@
+package main
+
+import (
+	"os"
+	"path"
+	"testing"
+
+	"github.com/nspcc-dev/neo-go/pkg/core/native/nativenames"
+	"github.com/stretchr/testify/require"
+)
+
+func TestNEP11Import(t *testing.T) {
+	e := newExecutor(t, true)
+
+	tmpDir := os.TempDir()
+	walletPath := path.Join(tmpDir, "walletForImport.json")
+	defer os.Remove(walletPath)
+
+	nnsContractHash, err := e.Chain.GetNativeContractScriptHash(nativenames.NameService)
+	require.NoError(t, err)
+	neoContractHash, err := e.Chain.GetNativeContractScriptHash(nativenames.Neo)
+	require.NoError(t, err)
+	e.Run(t, "neo-go", "wallet", "init", "--wallet", walletPath)
+
+	args := []string{
+		"neo-go", "wallet", "nep11", "import",
+		"--rpc-endpoint", "http://" + e.RPC.Addr,
+		"--wallet", walletPath,
+	}
+	// missing token hash
+	e.RunWithError(t, args...)
+
+	// good
+	e.Run(t, append(args, "--token", nnsContractHash.StringLE())...)
+
+	// already exists
+	e.RunWithError(t, append(args, "--token", nnsContractHash.StringLE())...)
+
+	// not a NEP11 token
+	e.RunWithError(t, append(args, "--token", neoContractHash.StringLE())...)
+}