add SimpleWallet.toDTO, fixes #504 (#508)

* add SimpleWallet.toDTO, fixes #504

* add word2ua test

src/model/wallet/SimpleWallet.ts

@@ -122,6 +122,14 @@ export class SimpleWallet extends Wallet {
         );
     }
 
+    /**
+     * Creates a SimpleWallet DTO
+     * @returns {ISimpleWalletDTO}
+     */
+    public toDTO(): ISimpleWalletDTO {
+        return JSON.parse(JSON.stringify(this))
+    }
+
     /**
      * Open a wallet and generate an Account
      * @param password - Password to decrypt private key

test/core/crypto/utilities.spec.ts

@@ -0,0 +1,32 @@
+/*
+ * Copyright 2019 NEM
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+import {expect} from 'chai';
+import {words2ua} from '../../../src/core/crypto/Utilities';
+import {Convert} from '../../../src/core/format';
+
+describe('crypto utilities', () => {
+    it('words2ua creates an ua from a word array', () => {
+        // Arrange:
+        const key = '4344645752e57065f814b51713d05810'
+        const words = [ 1128555607, 1390768229, -132860649, 332421136 ];
+
+        // Act:
+        const ua = words2ua(new Uint8Array(16), {words})
+
+        // Assert:
+        expect(ua).deep.equal(Convert.hexToUint8(key));
+    });
+});

test/model/wallet/SimpleWallet.spec.ts

@@ -60,4 +60,12 @@ describe('SimpleWallet', () => {
         const account2 = simpleWallet2.open(password);
         expect(account).to.deep.equal(account2);
     });
+
+    it('should create a simple wallet DTO', () => {
+        const privateKey = '5149a02ca2b2610138376717daaff8477f1639796aa108b7eee83e99e585b250';
+        const password = new Password('password');
+        const simpleWallet = SimpleWallet.createFromPrivateKey('wallet-name', password, privateKey, NetworkType.MIJIN_TEST);
+        const simpleWalletDTO = simpleWallet.toDTO()
+        expect(simpleWalletDTO).to.deep.equal(JSON.parse(JSON.stringify(simpleWallet)))
+    })
 });