feat: mock transactions (#1242)

Signed-off-by: drptbl <[email protected]>
Co-authored-by: drptbl <[email protected]>

wallets/ethereum-wallet-mock/package.json

@@ -35,13 +35,13 @@
   },
   "dependencies": {
     "@depay/web3-client": "10.18.6",
-    "@depay/web3-mock": "14.17.0",
+    "@depay/web3-mock": "14.19.1",
     "@depay/web3-mock-evm": "^14.17.0",
     "@synthetixio/synpress-core": "0.0.4",
     "viem": "2.9.9"
   },
   "devDependencies": {
-    "@depay/web3-mock": "14.17.0",
+    "@depay/web3-mock": "14.19.1",
     "@synthetixio/synpress-tsconfig": "0.0.4",
     "@types/node": "20.11.17",
     "@vitest/coverage-v8": "1.2.2",

wallets/ethereum-wallet-mock/src/playwright/EthereumWalletMock.ts

@@ -5,6 +5,7 @@ import { EthereumWalletMockAbstract } from '../type/EthereumWalletMockAbstract'
 import type { Network } from '../type/Network'
 import type { WalletMock } from '../type/WalletMock'
 import { DEFAULT_NETWORK_ID } from './utils'
+import { mockTransaction, sendTransaction } from './utils'
 
 /**
  * Mock implementation of an Ethereum wallet for testing purposes.
@@ -230,4 +231,26 @@ export default class EthereumWalletMock extends EthereumWalletMockAbstract {
       [BLOCKCHAIN, [ACCOUNT_MOCK], wallet]
     )
   }
+
+  /**
+   * Sends a transaction.
+   * @param to - Recipient address.
+   * @param value - Transaction value in wei.
+   * @returns Promise that resolves to the transaction hash.
+   */
+  async sendTransaction(to: string, value: string): Promise<string> {
+    // Mock the transaction
+    await mockTransaction(this.page, [
+      to,
+      ACCOUNT_MOCK, // from address
+      value
+    ])
+
+    // Send the transaction
+    return this.page.evaluate(sendTransaction, {
+      to,
+      from: ACCOUNT_MOCK,
+      value
+    })
+  }
 }

wallets/ethereum-wallet-mock/src/playwright/utils/index.ts

@@ -1,2 +1,4 @@
 export { default as mockEthereum } from './mockEthereum'
+export * from './mockTransaction'
+export * from './sendTransaction'
 export * from '../constants'

wallets/ethereum-wallet-mock/src/playwright/utils/mockTransaction.ts

@@ -0,0 +1,23 @@
+import type { Page } from '@playwright/test'
+
+/**
+ * Mocks an Ethereum transaction using Web3Mock
+ * @param page - Playwright page instance
+ * @param params - Array of transaction parameters [to, from, value]
+ * @returns Promise that resolves to the Web3Mock mock result
+ */
+export const mockTransaction = async (page: Page, params: [string, string, string]) => {
+  return page.evaluate(
+    ([params]) => {
+      return Web3Mock.mock({
+        blockchain: 'ethereum',
+        transaction: {
+          to: params?.[0],
+          from: params?.[1],
+          value: params?.[2]
+        }
+      })
+    },
+    [params]
+  )
+}

wallets/ethereum-wallet-mock/src/playwright/utils/sendTransaction.ts

@@ -0,0 +1,17 @@
+interface SendTransactionParams {
+  to: string
+  from: string
+  value: string
+}
+
+/**
+ * Sends an Ethereum transaction using Web3Mock
+ * @param params - Transaction parameters {to: string, from: string, value: string}
+ * @returns Promise that resolves to the transaction hash
+ */
+export const sendTransaction = (params: SendTransactionParams): Promise<string> => {
+  return window.ethereum.request({
+    method: 'eth_sendTransaction',
+    params: [params]
+  })
+}

wallets/ethereum-wallet-mock/test/playwright/mock/sendTransaction.spec.ts

@@ -0,0 +1,57 @@
+import { ACCOUNT_MOCK } from '../../../src/constants'
+import test from '../../../src/playwright/synpress'
+
+const { expect } = test
+
+const TO_ADDRESS = '0x5Af489c8786A018EC4814194dC8048be1007e390'
+const VALUE = '2000000000000000000' // 2 ETH
+
+test('should mock and send transaction', async ({ ethereumWalletMock }) => {
+  // Connect wallet first
+  await ethereumWalletMock.connectToDapp()
+
+  // Send the transaction
+  const txHash = await ethereumWalletMock.sendTransaction(TO_ADDRESS, VALUE)
+
+  // Verify transaction hash format
+  expect(txHash).toMatch(/^0x[a-fA-F0-9]{64}$/)
+})
+
+test('should mock and send transaction with zero value', async ({ ethereumWalletMock }) => {
+  await ethereumWalletMock.connectToDapp()
+
+  const txHash = await ethereumWalletMock.sendTransaction(TO_ADDRESS, '0')
+
+  expect(txHash).toMatch(/^0x[a-fA-F0-9]{64}$/)
+})
+
+test('should mock and send transaction to same address', async ({ ethereumWalletMock }) => {
+  await ethereumWalletMock.connectToDapp()
+
+  const txHash = await ethereumWalletMock.sendTransaction(ACCOUNT_MOCK, VALUE)
+
+  expect(txHash).toMatch(/^0x[a-fA-F0-9]{64}$/)
+})
+
+test('should mock and send multiple transactions', async ({ ethereumWalletMock }) => {
+  await ethereumWalletMock.connectToDapp()
+
+  const transactions = [
+    { to: TO_ADDRESS, value: '1000000000000000000' }, // 1 ETH
+    { to: TO_ADDRESS, value: '3000000000000000000' }, // 3 ETH
+    { to: TO_ADDRESS, value: '500000000000000000' } // 0.5 ETH
+  ]
+
+  for (const tx of transactions) {
+    const txHash = await ethereumWalletMock.sendTransaction(tx.to, tx.value)
+    expect(txHash).toMatch(/^0x[a-fA-F0-9]{64}$/)
+  }
+})
+
+test('should fail with invalid value', async ({ ethereumWalletMock }) => {
+  await ethereumWalletMock.connectToDapp()
+
+  const invalidValue = 'invalid'
+
+  await expect(ethereumWalletMock.sendTransaction(TO_ADDRESS, invalidValue)).rejects.toThrow()
+})