90 lines
4.2 KiB
TypeScript
90 lines
4.2 KiB
TypeScript
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import { BigNumber } from '@ethersproject/bignumber'
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import { parseEther } from '@ethersproject/units'
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import { USDC_MAINNET } from '../../../src/constants/tokens'
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import { getTestSelector } from '../../utils'
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describe('Swap', () => {
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it('should render and dismiss the wallet rejection modal', () => {
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cy.visit('/swap', { ethereum: 'hardhat' })
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.hardhat()
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.then((hardhat) => {
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cy.stub(hardhat.wallet, 'sendTransaction').log(false).rejects(new Error('user cancelled'))
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cy.get('#swap-currency-output .open-currency-select-button').click()
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cy.get(getTestSelector('token-search-input')).clear().type(USDC_MAINNET.address)
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cy.contains('USDC').click()
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cy.get('#swap-currency-output .token-amount-input').clear().type('1')
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cy.get('#swap-currency-input .token-amount-input').should('not.equal', '')
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cy.get('#swap-button').click()
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cy.get('#confirm-swap-or-send').click()
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cy.contains('Transaction rejected').should('exist')
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cy.contains('Dismiss').click()
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cy.contains('Transaction rejected').should('not.exist')
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})
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})
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it.skip('should render an error for slippage failure', () => {
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cy.visit('/swap', { ethereum: 'hardhat' })
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.hardhat({ automine: false })
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.then((hardhat) => {
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cy.then(() => hardhat.provider.getBalance(hardhat.wallet.address)).then((initialBalance) => {
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// Gas estimation fails for this transaction (that would normally fail), so we stub it.
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const send = cy.stub(hardhat.provider, 'send').log(false)
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send.withArgs('eth_estimateGas').resolves(BigNumber.from(2_000_000))
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send.callThrough()
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// Set slippage to a very low value.
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cy.get(getTestSelector('open-settings-dialog-button')).click()
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cy.get(getTestSelector('max-slippage-settings')).click()
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cy.get(getTestSelector('slippage-input')).clear().type('0.01')
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cy.get('body').click('topRight')
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cy.get(getTestSelector('slippage-input')).should('not.exist')
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// Open the currency select modal.
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cy.get('#swap-currency-output .open-currency-select-button').click()
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// Select UNI as output token
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cy.get(getTestSelector('token-search-input')).clear().type('Uniswap')
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cy.get(getTestSelector('currency-list-wrapper'))
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.contains(/^Uniswap$/)
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.first()
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// Our scrolling library (react-window) seems to freeze when acted on by cypress, with this element set to
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// `pointer-events: none`. This can be ignored using `{force: true}`.
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.click({ force: true })
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// Swap 2 times.
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const AMOUNT_TO_SWAP = 400
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const NUMBER_OF_SWAPS = 2
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const INDIVIDUAL_SWAP_INPUT = AMOUNT_TO_SWAP / NUMBER_OF_SWAPS
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cy.get('#swap-currency-input .token-amount-input').clear().type(INDIVIDUAL_SWAP_INPUT.toString())
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cy.get('#swap-currency-output .token-amount-input').should('not.equal', '')
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cy.get('#swap-button').click()
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cy.get('#confirm-swap-or-send').click()
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cy.get(getTestSelector('dismiss-tx-confirmation')).click()
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cy.get('#swap-currency-input .token-amount-input').clear().type(INDIVIDUAL_SWAP_INPUT.toString())
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cy.get('#swap-currency-output .token-amount-input').should('not.equal', '')
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cy.get('#swap-button').click()
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cy.get('#confirm-swap-or-send').click()
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cy.get(getTestSelector('dismiss-tx-confirmation')).click()
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// The pending transaction indicator should be visible.
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cy.contains('Pending').should('exist')
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cy.then(() => hardhat.mine()).then(() => {
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// The pending transaction indicator should not be visible.
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cy.contains('Pending').should('not.exist')
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// Check for a failed transaction notification.
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cy.contains('Swap failed').should('exist')
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// Assert that at least one of the swaps failed due to slippage.
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cy.then(() => hardhat.provider.getBalance(hardhat.wallet.address)).then((finalBalance) => {
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expect(finalBalance.gt(initialBalance.sub(parseEther(AMOUNT_TO_SWAP.toString())))).to.be.true
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})
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})
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})
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})
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})
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})
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