add more test cases

Author: zhangchiqing

model/encodable/keys_test.go

@@ -21,6 +21,10 @@ func isHexString(enc []byte) error {
 		return fmt.Errorf("invalid hex: %v", str)
 	}
 
+	if str == "null" {
+		return nil
+	}
+
 	// remove the "
 	str = str[1 : len(str)-1]
 	_, err := hex.DecodeString(str)
@@ -62,6 +66,8 @@ func TestEncodableNetworkPubKeyNil(t *testing.T) {
 	err = json.Unmarshal(enc, &dec)
 	require.NoError(t, err)
 	require.Equal(t, key, dec)
+
+	require.NoError(t, isHexString(enc))
 }
 
 func TestEncodableNetworkPrivKey(t *testing.T) {
@@ -77,6 +83,8 @@ func TestEncodableNetworkPrivKey(t *testing.T) {
 	err = json.Unmarshal(enc, &dec)
 	require.NoError(t, err)
 	require.True(t, key.Equals(dec.PrivateKey))
+
+	require.NoError(t, isHexString(enc))
 }
 
 func TestEncodableNetworkPrivKeyNil(t *testing.T) {
@@ -90,6 +98,8 @@ func TestEncodableNetworkPrivKeyNil(t *testing.T) {
 	err = json.Unmarshal(enc, &dec)
 	require.NoError(t, err)
 	require.Equal(t, key, dec)
+
+	require.NoError(t, isHexString(enc))
 }
 
 func TestEncodableStakingPubKey(t *testing.T) {
@@ -105,6 +115,8 @@ func TestEncodableStakingPubKey(t *testing.T) {
 	err = json.Unmarshal(enc, &dec)
 	require.NoError(t, err)
 	require.True(t, key.Equals(dec.PublicKey))
+
+	require.NoError(t, isHexString(enc))
 }
 
 func TestEncodableStakingPubKeyNil(t *testing.T) {
@@ -118,6 +130,8 @@ func TestEncodableStakingPubKeyNil(t *testing.T) {
 	err = json.Unmarshal(enc, &dec)
 	require.NoError(t, err)
 	require.Equal(t, key, dec)
+
+	require.NoError(t, isHexString(enc))
 }
 
 func TestEncodableStakingPrivKey(t *testing.T) {
@@ -134,6 +148,8 @@ func TestEncodableStakingPrivKey(t *testing.T) {
 	require.NoError(t, err)
 
 	require.True(t, key.Equals(dec.PrivateKey), "encoded/decoded key equality check failed")
+
+	require.NoError(t, isHexString(enc))
 }
 
 func TestEncodableStakingPrivKeyNil(t *testing.T) {
@@ -147,6 +163,8 @@ func TestEncodableStakingPrivKeyNil(t *testing.T) {
 	err = json.Unmarshal(enc, &dec)
 	require.NoError(t, err)
 	require.Equal(t, key, dec)
+
+	require.NoError(t, isHexString(enc))
 }
 
 func TestEncodableRandomBeaconPubKey(t *testing.T) {
@@ -162,6 +180,8 @@ func TestEncodableRandomBeaconPubKey(t *testing.T) {
 	err = json.Unmarshal(enc, &dec)
 	require.NoError(t, err)
 	require.True(t, key.Equals(dec.PublicKey))
+
+	require.NoError(t, isHexString(enc))
 }
 
 func TestEncodableRandomBeaconPubKeyNil(t *testing.T) {
@@ -175,6 +195,8 @@ func TestEncodableRandomBeaconPubKeyNil(t *testing.T) {
 	err = json.Unmarshal(enc, &dec)
 	require.NoError(t, err)
 	require.Equal(t, key, dec)
+
+	require.NoError(t, isHexString(enc))
 }
 
 func TestEncodableRandomBeaconPrivKey(t *testing.T) {
@@ -191,6 +213,8 @@ func TestEncodableRandomBeaconPrivKey(t *testing.T) {
 	require.NoError(t, err)
 
 	require.True(t, key.Equals(dec.PrivateKey), "encoded/decoded key equality check failed")
+
+	require.NoError(t, isHexString(enc))
 }
 
 func TestEncodableRandomBeaconPrivKeyNil(t *testing.T) {
@@ -204,6 +228,8 @@ func TestEncodableRandomBeaconPrivKeyNil(t *testing.T) {
 	err = json.Unmarshal(enc, &dec)
 	require.NoError(t, err)
 	require.Equal(t, key, dec)
+
+	require.NoError(t, isHexString(enc))
 }
 
 func generateRandomSeed(t *testing.T) []byte {