test: add encryption module unit tests

packages/dapp-toolkit/src/modules/wallet-request/encryption/encryption.module.spec.ts

@@ -0,0 +1,49 @@
+import { describe, expect, it } from 'vitest'
+import { EncryptionModule } from './encryption.module'
+
+describe('encryption module', () => {
+  const encryptionModule = EncryptionModule()
+
+  it('should encrypt data', async () => {
+    const data = Buffer.from('data')
+    const encryptionKey = Buffer.from('12345678901234567890123456789012')
+    const result = await encryptionModule
+      .encrypt(data, encryptionKey, encryptionModule.createIV())
+      .map((value) => {
+        expect(value).toBeDefined()
+      })
+
+    expect(result.isOk()).toBeTruthy()
+  })
+
+  it('should return error for invalid key length', async () => {
+    const data = Buffer.from('data')
+    const encryptionKey = Buffer.from('key')
+    const result = await encryptionModule.encrypt(
+      data,
+      encryptionKey,
+      encryptionModule.createIV(),
+    )
+    expect(result.isErr()).toBeTruthy()
+  })
+
+  it('should return 12 bytes IV', () => {
+    const iv = encryptionModule.createIV()
+    expect(iv.length).toBe(12)
+  })
+
+  it('should decrypt previously encrypted data', async () => {
+    const data = Buffer.from('data')
+    const encryptionKey = Buffer.from('12345678901234567890123456789012')
+    const iv = encryptionModule.createIV()
+    const result = await encryptionModule
+      .encrypt(data, encryptionKey, iv)
+      .andThen((sealed) =>
+        encryptionModule.decrypt(sealed.ciphertext, encryptionKey, iv),
+      )
+      .map((decrypted) =>
+        expect(decrypted.toString('hex')).toEqual(data.toString('hex')),
+      )
+    expect(result.isOk()).toBeTruthy()
+  })
+})