[#352] Add explicit max number of alphabet nodes

Signed-off-by: Alejandro Lopez <a.lopez@yadro.com>

cmd/frostfs-adm/internal/modules/morph/initialize_test.go

@@ -2,6 +2,7 @@ package morph
 
 import (
 	"encoding/hex"
+	"fmt"
 	"os"
 	"path/filepath"
 	"strconv"
@@ -40,8 +41,11 @@ func TestInitialize(t *testing.T) {
 	t.Run("16 nodes", func(t *testing.T) {
 		testInitialize(t, 16)
 	})
-	t.Run("22 nodes", func(t *testing.T) {
-		testInitialize(t, 22)
+	t.Run("max nodes", func(t *testing.T) {
+		testInitialize(t, maxAlphabetNodes)
+	})
+	t.Run("too many nodes", func(t *testing.T) {
+		require.ErrorIs(t, generateTestData(t, t.TempDir(), maxAlphabetNodes+1), ErrTooManyAlphabetNodes)
 	})
 }
 
@@ -49,7 +53,7 @@ func testInitialize(t *testing.T, committeeSize int) {
 	testdataDir := t.TempDir()
 	v := viper.GetViper()
 
-	generateTestData(t, testdataDir, committeeSize)
+	require.NoError(t, generateTestData(t, testdataDir, committeeSize))
 	v.Set(protoConfigPath, filepath.Join(testdataDir, protoFileName))
 
 	// Set to the path or remove the next statement to download from the network.
@@ -80,25 +84,33 @@ func testInitialize(t *testing.T, committeeSize int) {
 	})
 }
 
-func generateTestData(t *testing.T, dir string, size int) {
+func generateTestData(t *testing.T, dir string, size int) error {
 	v := viper.GetViper()
 	v.Set(alphabetWalletsFlag, dir)
 
 	sizeStr := strconv.FormatUint(uint64(size), 10)
-	require.NoError(t, generateAlphabetCmd.Flags().Set(alphabetSizeFlag, sizeStr))
+	if err := generateAlphabetCmd.Flags().Set(alphabetSizeFlag, sizeStr); err != nil {
+		return err
+	}
 
 	setTestCredentials(v, size)
-	require.NoError(t, generateAlphabetCreds(generateAlphabetCmd, nil))
+	if err := generateAlphabetCreds(generateAlphabetCmd, nil); err != nil {
+		return err
+	}
 
 	var pubs []string
 	for i := 0; i < size; i++ {
 		p := filepath.Join(dir, innerring.GlagoliticLetter(i).String()+".json")
 		w, err := wallet.NewWalletFromFile(p)
-		require.NoError(t, err, "wallet doesn't exist")
+		if err != nil {
+			return fmt.Errorf("wallet doesn't exist: %w", err)
+		}
 		for _, acc := range w.Accounts {
 			if acc.Label == singleAccountName {
 				pub, ok := vm.ParseSignatureContract(acc.Contract.Script)
-				require.True(t, ok)
+				if !ok {
+					return fmt.Errorf("could not parse signature script for %s", acc.Address)
+				}
 				pubs = append(pubs, hex.EncodeToString(pub))
 				continue
 			}
@@ -113,10 +125,12 @@ func generateTestData(t *testing.T, dir string, size int) {
 	cfg.ProtocolConfiguration.P2PSigExtensions = true
 	cfg.ProtocolConfiguration.VerifyTransactions = true
 	data, err := yaml.Marshal(cfg)
-	require.NoError(t, err)
+	if err != nil {
+		return err
+	}
 
 	protoPath := filepath.Join(dir, protoFileName)
-	require.NoError(t, os.WriteFile(protoPath, data, os.ModePerm))
+	return os.WriteFile(protoPath, data, os.ModePerm)
 }
 
 func setTestCredentials(v *viper.Viper, size int) {