Migrate StableTokenWrapper tests to anvil (#326)

docs/sdk/contractkit/modules/test_utils_utils.md

@@ -8,6 +8,7 @@
 
 - [currentEpochNumber](test_utils_utils.md#currentepochnumber)
 - [mineToNextEpoch](test_utils_utils.md#minetonextepoch)
+- [topUpWithToken](test_utils_utils.md#topupwithtoken)
 
 ## Functions
 
@@ -28,7 +29,7 @@
 
 #### Defined in
 
-[packages/sdk/contractkit/src/test-utils/utils.ts:5](https://github.com/celo-org/developer-tooling/blob/master/packages/sdk/contractkit/src/test-utils/utils.ts#L5)
+[packages/sdk/contractkit/src/test-utils/utils.ts:9](https://github.com/celo-org/developer-tooling/blob/master/packages/sdk/contractkit/src/test-utils/utils.ts#L9)
 
 ___
 
@@ -49,4 +50,27 @@ ___
 
 #### Defined in
 
-[packages/sdk/contractkit/src/test-utils/utils.ts:32](https://github.com/celo-org/developer-tooling/blob/master/packages/sdk/contractkit/src/test-utils/utils.ts#L32)
+[packages/sdk/contractkit/src/test-utils/utils.ts:36](https://github.com/celo-org/developer-tooling/blob/master/packages/sdk/contractkit/src/test-utils/utils.ts#L36)
+
+___
+
+### topUpWithToken
+
+▸ **topUpWithToken**(`kit`, `stableToken`, `recipientAddress`, `amount`): `Promise`\<`void`\>
+
+#### Parameters
+
+| Name | Type |
+| :------ | :------ |
+| `kit` | [`ContractKit`](../classes/kit.ContractKit.md) |
+| `stableToken` | [`StableToken`](../enums/celo_tokens.StableToken.md) |
+| `recipientAddress` | `string` |
+| `amount` | `BigNumber` |
+
+#### Returns
+
+`Promise`\<`void`\>
+
+#### Defined in
+
+[packages/sdk/contractkit/src/test-utils/utils.ts:43](https://github.com/celo-org/developer-tooling/blob/master/packages/sdk/contractkit/src/test-utils/utils.ts#L43)

packages/sdk/contractkit/src/test-utils/utils.ts

@@ -1,5 +1,9 @@
+import { StableToken } from '@celo/base'
+import { STABLES_ADDRESS, withImpersonatedAccount } from '@celo/dev-utils/lib/anvil-test'
 import { mineBlocks } from '@celo/dev-utils/lib/ganache-test'
+import BigNumber from 'bignumber.js'
 import Web3 from 'web3'
+import { ContractKit } from '../kit'
 
 const GANACHE_EPOCH_SIZE = 100
 export const currentEpochNumber = async (web3: Web3, epochSize: number = GANACHE_EPOCH_SIZE) => {
@@ -35,3 +39,18 @@ export const mineToNextEpoch = async (web3: Web3, epochSize: number = GANACHE_EP
   const blocksUntilNextEpoch = getFirstBlockNumberForEpoch(epochNumber + 1, epochSize) - blockNumber
   await mineBlocks(blocksUntilNextEpoch, web3)
 }
+
+export const topUpWithToken = async (
+  kit: ContractKit,
+  stableToken: StableToken,
+  recipientAddress: string,
+  amount: BigNumber
+) => {
+  const token = await kit.contracts.getStableToken(stableToken)
+
+  await withImpersonatedAccount(kit.web3, STABLES_ADDRESS, async () => {
+    await token.transfer(recipientAddress, amount.toFixed()).sendAndWaitForReceipt({
+      from: STABLES_ADDRESS,
+    })
+  })
+}

packages/sdk/contractkit/src/wrappers/StableToken.test.ts

@@ -1,12 +1,14 @@
 import { StrongAddress } from '@celo/base'
-import { testWithGanache } from '@celo/dev-utils/lib/ganache-test'
+import { testWithAnvilL1 } from '@celo/dev-utils/lib/anvil-test'
+import BigNumber from 'bignumber.js'
 import { StableToken } from '../celo-tokens'
 import { ContractKit, newKitFromWeb3 } from '../kit'
+import { topUpWithToken } from '../test-utils/utils'
 import { StableTokenWrapper } from './StableTokenWrapper'
 
 // TEST NOTES: balances defined in test-utils/migration-override
 
-testWithGanache('StableToken Wrapper', async (web3) => {
+testWithAnvilL1('StableToken Wrapper', async (web3) => {
   const kit = newKitFromWeb3(web3)
 
   const stableTokenInfos: {
@@ -57,20 +59,25 @@ export function testStableToken(
   let accounts: string[] = []
   let stableToken: StableTokenWrapper
 
-  beforeAll(async () => {
+  beforeEach(async () => {
     accounts = (await web3.eth.getAccounts()) as StrongAddress[]
     kit.defaultAccount = accounts[0] as StrongAddress
     stableToken = await kit.contracts.getStableToken(stableTokenName)
+
+    // Make sure the accounts we're transferring from has some stable token
+    for (let i = 0; i <= 3; i++) {
+      await topUpWithToken(kit, stableTokenName, accounts[i], new BigNumber(ONE_STABLE))
+    }
   })
 
-  test('SBAT check balance', () =>
-    expect(stableToken.balanceOf(accounts[0])).resolves.toBeBigNumber())
-  test('SBAT check decimals', () => expect(stableToken.decimals()).resolves.toBe(18))
-  test('SBAT check name', () => expect(stableToken.name()).resolves.toBe(expectedName))
-  test('SBAT check symbol', () => expect(stableToken.symbol()).resolves.toBe(expectedSymbol))
-  test('SBAT check totalSupply', () => expect(stableToken.totalSupply()).resolves.toBeBigNumber())
+  it('checks balance', () => expect(stableToken.balanceOf(accounts[0])).resolves.toBeBigNumber())
+  it('checks decimals', () => expect(stableToken.decimals()).resolves.toBe(18))
+  it('checks name', () => expect(stableToken.name()).resolves.toBe(expectedName))
+  // TODO fix once symbols are available in the devchain
+  it.failing('checks symbol', () => expect(stableToken.symbol()).resolves.toBe(expectedSymbol))
+  it('checks totalSupply', () => expect(stableToken.totalSupply()).resolves.toBeBigNumber())
 
-  test('SBAT transfer', async () => {
+  it('transfers', async () => {
     const before = await stableToken.balanceOf(accounts[1])
     const tx = await stableToken.transfer(accounts[1], ONE_STABLE).send()
     await tx.waitReceipt()
@@ -79,7 +86,7 @@ export function testStableToken(
     expect(after.minus(before)).toEqBigNumber(ONE_STABLE)
   })
 
-  test('SBAT approve spender', async () => {
+  it('approves spender', async () => {
     const before = await stableToken.allowance(accounts[0], accounts[1])
     expect(before).toEqBigNumber(0)
 
@@ -88,7 +95,7 @@ export function testStableToken(
     expect(after).toEqBigNumber(ONE_STABLE)
   })
 
-  test('SBAT tranfer from', async () => {
+  it('transfers from', async () => {
     const before = await stableToken.balanceOf(accounts[3])
     // account1 approves account0
     await stableToken.approve(accounts[1], ONE_STABLE).sendAndWaitForReceipt({ from: accounts[0] })