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router.test.ts
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router.test.ts
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import invariant from 'tiny-invariant'
import { ChainId, CurrencyAmount, ETHER, Pair, Percent, Route, Router, Token, TokenAmount, Trade, WETH } from '../src'
import JSBI from 'jsbi'
function checkDeadline(deadline: string[] | string): void {
expect(typeof deadline).toBe('string')
invariant(typeof deadline === 'string')
// less than 5 seconds on the deadline
expect(new Date().getTime() / 1000 - parseInt(deadline)).toBeLessThanOrEqual(5)
}
describe('Router', () => {
const token0 = new Token(ChainId.MAINNET, '0x0000000000000000000000000000000000000001', 18, 't0')
const token1 = new Token(ChainId.MAINNET, '0x0000000000000000000000000000000000000002', 18, 't1')
const pair_0_1 = new Pair(new TokenAmount(token0, JSBI.BigInt(1000)), new TokenAmount(token1, JSBI.BigInt(1000)))
const pair_weth_0 = new Pair(new TokenAmount(WETH[ChainId.MAINNET], '1000'), new TokenAmount(token0, '1000'))
describe('#swapCallParameters', () => {
describe('exact in', () => {
it('ether to token1', () => {
const result = Router.swapCallParameters(
Trade.exactIn(new Route([pair_weth_0, pair_0_1], ETHER, token1), CurrencyAmount.ether(JSBI.BigInt(100))),
{ ttl: 50, recipient: '0x0000000000000000000000000000000000000004', allowedSlippage: new Percent('1', '100') }
)
expect(result.methodName).toEqual('swapExactETHForTokens')
expect(result.args.slice(0, -1)).toEqual([
'0x51',
[WETH[ChainId.MAINNET].address, token0.address, token1.address],
'0x0000000000000000000000000000000000000004'
])
expect(result.value).toEqual('0x64')
checkDeadline(result.args[result.args.length - 1])
})
it('token1 to ether', () => {
const result = Router.swapCallParameters(
Trade.exactIn(new Route([pair_0_1, pair_weth_0], token1, ETHER), new TokenAmount(token1, JSBI.BigInt(100))),
{ ttl: 50, recipient: '0x0000000000000000000000000000000000000004', allowedSlippage: new Percent('1', '100') }
)
expect(result.methodName).toEqual('swapExactTokensForETH')
expect(result.args.slice(0, -1)).toEqual([
'0x64',
'0x51',
[token1.address, token0.address, WETH[ChainId.MAINNET].address],
'0x0000000000000000000000000000000000000004'
])
expect(result.value).toEqual('0x0')
checkDeadline(result.args[result.args.length - 1])
})
it('token0 to token1', () => {
const result = Router.swapCallParameters(
Trade.exactIn(new Route([pair_0_1], token0, token1), new TokenAmount(token0, JSBI.BigInt(100))),
{ ttl: 50, recipient: '0x0000000000000000000000000000000000000004', allowedSlippage: new Percent('1', '100') }
)
expect(result.methodName).toEqual('swapExactTokensForTokens')
expect(result.args.slice(0, -1)).toEqual([
'0x64',
'0x59',
[token0.address, token1.address],
'0x0000000000000000000000000000000000000004'
])
expect(result.value).toEqual('0x0')
checkDeadline(result.args[result.args.length - 1])
})
})
describe('exact out', () => {
it('ether to token1', () => {
const result = Router.swapCallParameters(
Trade.exactOut(new Route([pair_weth_0, pair_0_1], ETHER, token1), new TokenAmount(token1, JSBI.BigInt(100))),
{ ttl: 50, recipient: '0x0000000000000000000000000000000000000004', allowedSlippage: new Percent('1', '100') }
)
expect(result.methodName).toEqual('swapETHForExactTokens')
expect(result.args.slice(0, -1)).toEqual([
'0x64',
[WETH[ChainId.MAINNET].address, token0.address, token1.address],
'0x0000000000000000000000000000000000000004'
])
expect(result.value).toEqual('0x80')
checkDeadline(result.args[result.args.length - 1])
})
it('token1 to ether', () => {
const result = Router.swapCallParameters(
Trade.exactOut(new Route([pair_0_1, pair_weth_0], token1, ETHER), CurrencyAmount.ether(JSBI.BigInt(100))),
{ ttl: 50, recipient: '0x0000000000000000000000000000000000000004', allowedSlippage: new Percent('1', '100') }
)
expect(result.methodName).toEqual('swapTokensForExactETH')
expect(result.args.slice(0, -1)).toEqual([
'0x64',
'0x80',
[token1.address, token0.address, WETH[ChainId.MAINNET].address],
'0x0000000000000000000000000000000000000004'
])
expect(result.value).toEqual('0x0')
checkDeadline(result.args[result.args.length - 1])
})
it('token0 to token1', () => {
const result = Router.swapCallParameters(
Trade.exactOut(new Route([pair_0_1], token0, token1), new TokenAmount(token1, JSBI.BigInt(100))),
{ ttl: 50, recipient: '0x0000000000000000000000000000000000000004', allowedSlippage: new Percent('1', '100') }
)
expect(result.methodName).toEqual('swapTokensForExactTokens')
expect(result.args.slice(0, -1)).toEqual([
'0x64',
'0x71',
[token0.address, token1.address],
'0x0000000000000000000000000000000000000004'
])
expect(result.value).toEqual('0x0')
checkDeadline(result.args[result.args.length - 1])
})
})
describe('supporting fee on transfer', () => {
describe('exact in', () => {
it('ether to token1', () => {
const result = Router.swapCallParameters(
Trade.exactIn(new Route([pair_weth_0, pair_0_1], ETHER, token1), CurrencyAmount.ether(JSBI.BigInt(100))),
{
ttl: 50,
recipient: '0x0000000000000000000000000000000000000004',
allowedSlippage: new Percent('1', '100'),
feeOnTransfer: true
}
)
expect(result.methodName).toEqual('swapExactETHForTokensSupportingFeeOnTransferTokens')
expect(result.args.slice(0, -1)).toEqual([
'0x51',
[WETH[ChainId.MAINNET].address, token0.address, token1.address],
'0x0000000000000000000000000000000000000004'
])
expect(result.value).toEqual('0x64')
checkDeadline(result.args[result.args.length - 1])
})
it('token1 to ether', () => {
const result = Router.swapCallParameters(
Trade.exactIn(new Route([pair_0_1, pair_weth_0], token1, ETHER), new TokenAmount(token1, JSBI.BigInt(100))),
{
ttl: 50,
recipient: '0x0000000000000000000000000000000000000004',
allowedSlippage: new Percent('1', '100'),
feeOnTransfer: true
}
)
expect(result.methodName).toEqual('swapExactTokensForETHSupportingFeeOnTransferTokens')
expect(result.args.slice(0, -1)).toEqual([
'0x64',
'0x51',
[token1.address, token0.address, WETH[ChainId.MAINNET].address],
'0x0000000000000000000000000000000000000004'
])
expect(result.value).toEqual('0x0')
checkDeadline(result.args[result.args.length - 1])
})
it('token0 to token1', () => {
const result = Router.swapCallParameters(
Trade.exactIn(new Route([pair_0_1], token0, token1), new TokenAmount(token0, JSBI.BigInt(100))),
{
ttl: 50,
recipient: '0x0000000000000000000000000000000000000004',
allowedSlippage: new Percent('1', '100'),
feeOnTransfer: true
}
)
expect(result.methodName).toEqual('swapExactTokensForTokensSupportingFeeOnTransferTokens')
expect(result.args.slice(0, -1)).toEqual([
'0x64',
'0x59',
[token0.address, token1.address],
'0x0000000000000000000000000000000000000004'
])
expect(result.value).toEqual('0x0')
checkDeadline(result.args[result.args.length - 1])
})
})
describe('exact out', () => {
it('ether to token1', () => {
expect(() =>
Router.swapCallParameters(
Trade.exactOut(
new Route([pair_weth_0, pair_0_1], ETHER, token1),
new TokenAmount(token1, JSBI.BigInt(100))
),
{
ttl: 50,
recipient: '0x0000000000000000000000000000000000000004',
allowedSlippage: new Percent('1', '100'),
feeOnTransfer: true
}
)
).toThrow('EXACT_OUT_FOT')
})
it('token1 to ether', () => {
expect(() =>
Router.swapCallParameters(
Trade.exactOut(new Route([pair_0_1, pair_weth_0], token1, ETHER), CurrencyAmount.ether(JSBI.BigInt(100))),
{
ttl: 50,
recipient: '0x0000000000000000000000000000000000000004',
allowedSlippage: new Percent('1', '100'),
feeOnTransfer: true
}
)
).toThrow('EXACT_OUT_FOT')
})
it('token0 to token1', () => {
expect(() =>
Router.swapCallParameters(
Trade.exactOut(new Route([pair_0_1], token0, token1), new TokenAmount(token1, JSBI.BigInt(100))),
{
ttl: 50,
recipient: '0x0000000000000000000000000000000000000004',
allowedSlippage: new Percent('1', '100'),
feeOnTransfer: true
}
)
).toThrow('EXACT_OUT_FOT')
})
})
})
})
})