cli: add nep11 ownerOf command

cli/nep11_test.go

@@ -85,7 +85,7 @@ func TestNEP11Import(t *testing.T) {
 	})
 }
 
-func TestNEP11_BalanceOf_Transfer(t *testing.T) {
+func TestNEP11_OwnerOf_BalanceOf_Transfer(t *testing.T) {
 	e := newExecutor(t, true)
 
 	tmpDir, err := ioutil.TempDir(os.TempDir(), "neogo.test.nftwallet*")
@@ -176,6 +176,21 @@ func TestNEP11_BalanceOf_Transfer(t *testing.T) {
 	e.Run(t, "neo-go", "wallet", "nep11", "remove",
 		"--wallet", wall, "--token", h.StringLE())
 
+	// ownerOf: missing contract hash
+	cmdOwnerOf := []string{"neo-go", "wallet", "nep11", "ownerOf",
+		"--rpc-endpoint", "http://" + e.RPC.Addr,
+	}
+	e.RunWithError(t, cmdOwnerOf...)
+	cmdOwnerOf = append(cmdOwnerOf, "--token", h.StringLE())
+
+	// ownerOf: missing token ID
+	e.RunWithError(t, cmdOwnerOf...)
+	cmdOwnerOf = append(cmdOwnerOf, "--id", string(tokenID))
+
+	// ownerOf: good
+	e.Run(t, cmdOwnerOf...)
+	e.checkNextLine(t, nftOwnerAddr)
+
 	cmdTransfer := []string{
 		"neo-go", "wallet", "nep11", "transfer",
 		"--rpc-endpoint", "http://" + e.RPC.Addr,

cli/wallet/nep11.go

@@ -19,6 +19,10 @@ import (
 )
 
 func newNEP11Commands() []cli.Command {
+	tokenAddressFlag := flags.AddressFlag{
+		Name:  "token",
+		Usage: "Token contract address or hash in LE",
+	}
 	tokenID := cli.StringFlag{
 		Name:  "id",
 		Usage: "Token ID",
@@ -83,6 +87,16 @@ func newNEP11Commands() []cli.Command {
    signer.
 `,
 		},
+		{
+			Name:      "ownerOf",
+			Usage:     "print owner of non-divisible NEP11 token with the specified ID",
+			UsageText: "ownerOf --rpc-endpoint <node> --timeout <time> --token <hash> --id <token-id>",
+			Action:    printNEP11Owner,
+			Flags: append([]cli.Flag{
+				tokenAddressFlag,
+				tokenID,
+			}, options.RPC...),
+		},
 	}
 }
 
@@ -221,3 +235,32 @@ func signAndSendNEP11Transfer(ctx *cli.Context, c *client.Client, acc *wallet.Ac
 	fmt.Fprintln(ctx.App.Writer, tx.Hash().StringLE())
 	return nil
 }
+
+func printNEP11Owner(ctx *cli.Context) error {
+	var err error
+	tokenHash := ctx.Generic("token").(*flags.Address)
+	if !tokenHash.IsSet {
+		return cli.NewExitError("token contract hash was not set", 1)
+	}
+
+	tokenID := ctx.String("id")
+	if tokenID == "" {
+		return cli.NewExitError(errors.New("token ID should be specified"), 1)
+	}
+
+	gctx, cancel := options.GetTimeoutContext(ctx)
+	defer cancel()
+
+	c, err := options.GetRPCClient(gctx, ctx)
+	if err != nil {
+		return cli.NewExitError(err, 1)
+	}
+
+	result, err := c.NEP11NDOwnerOf(tokenHash.Uint160(), tokenID)
+	if err != nil {
+		return cli.NewExitError(fmt.Sprintf("failed to call NEP11 `ownerOf` method: %s", err.Error()), 1)
+	}
+
+	fmt.Fprintln(ctx.App.Writer, address.Uint160ToString(result))
+	return nil
+}