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Diffstat (limited to 'packages/contracts/test/ts/erc20Token.ts')
| -rw-r--r-- | packages/contracts/test/ts/erc20Token.ts | 123 |
1 files changed, 123 insertions, 0 deletions
diff --git a/packages/contracts/test/ts/erc20Token.ts b/packages/contracts/test/ts/erc20Token.ts new file mode 100644 index 000000000..e2282cbf3 --- /dev/null +++ b/packages/contracts/test/ts/erc20Token.ts @@ -0,0 +1,123 @@ +import {ZeroEx} from '0x.js'; +import {BigNumber} from 'bignumber.js'; +import * as chai from 'chai'; +import * as Web3 from 'web3'; + +import {Artifacts} from '../../util/artifacts'; +import {constants} from '../../util/constants'; +import {ContractInstance} from '../../util/types'; + +import {chaiSetup} from './utils/chai_setup'; + +const {DummyToken} = new Artifacts(artifacts); +const web3: Web3 = (global as any).web3; +chaiSetup.configure(); +const expect = chai.expect; + +contract('ERC20Token', (accounts: string[]) => { + const zeroEx = new ZeroEx(web3.currentProvider); + const owner = accounts[0]; + const spender = accounts[1]; + + const MAX_MINT_VALUE = new BigNumber(100000000000000000000); + let tokenAddress: string; + let token: ContractInstance; + + beforeEach(async () => { + token = await DummyToken.new({from: owner}); + await token.mint(MAX_MINT_VALUE, {from: owner}); + tokenAddress = token.address; + }); + + describe('transfer', () => { + it('should throw if owner has insufficient balance', async () => { + const ownerBalance = await zeroEx.token.getBalanceAsync(tokenAddress, owner); + const amountToTransfer = ownerBalance.plus(1); + return expect(token.transfer.call(owner, spender, amountToTransfer, {from: spender})) + .to.be.rejectedWith(constants.REVERT); + }); + + it('should transfer balance from sender to receiver', async () => { + const receiver = spender; + const initOwnerBalance = await zeroEx.token.getBalanceAsync(tokenAddress, owner); + const amountToTransfer = new BigNumber(1); + await zeroEx.token.transferAsync(tokenAddress, owner, receiver, amountToTransfer); + const finalOwnerBalance = await zeroEx.token.getBalanceAsync(tokenAddress, owner); + const finalReceiverBalance = await zeroEx.token.getBalanceAsync(tokenAddress, receiver); + + const expectedFinalOwnerBalance = initOwnerBalance.minus(amountToTransfer); + const expectedFinalReceiverBalance = amountToTransfer; + expect(finalOwnerBalance).to.be.bignumber.equal(expectedFinalOwnerBalance); + expect(finalReceiverBalance).to.be.bignumber.equal(expectedFinalReceiverBalance); + }); + + it('should return true on a 0 value transfer', async () => { + const didReturnTrue = await token.transfer.call(spender, 0, {from: owner}); + expect(didReturnTrue).to.be.true(); + }); + }); + + describe('transferFrom', () => { + it('should throw if owner has insufficient balance', async () => { + const ownerBalance = await zeroEx.token.getBalanceAsync(tokenAddress, owner); + const amountToTransfer = ownerBalance.plus(1); + await zeroEx.token.setAllowanceAsync(tokenAddress, owner, spender, amountToTransfer); + return expect(token.transferFrom.call(owner, spender, amountToTransfer, {from: spender})) + .to.be.rejectedWith(constants.REVERT); + }); + + it('should throw if spender has insufficient allowance', async () => { + const ownerBalance = await zeroEx.token.getBalanceAsync(tokenAddress, owner); + const amountToTransfer = ownerBalance; + + const spenderAllowance = await zeroEx.token.getAllowanceAsync(tokenAddress, owner, spender); + const spenderAllowanceIsInsufficient = spenderAllowance.cmp(amountToTransfer) < 0; + expect(spenderAllowanceIsInsufficient).to.be.true(); + + return expect(token.transferFrom.call(owner, spender, amountToTransfer, {from: spender})) + .to.be.rejectedWith(constants.REVERT); + }); + + it('should return true on a 0 value transfer', async () => { + const amountToTransfer = 0; + const didReturnTrue = await token.transferFrom.call(owner, spender, amountToTransfer, {from: spender}); + expect(didReturnTrue).to.be.true(); + }); + + it('should not modify spender allowance if spender allowance is 2^256 - 1', async () => { + const initOwnerBalance = await zeroEx.token.getBalanceAsync(tokenAddress, owner); + const amountToTransfer = initOwnerBalance; + const initSpenderAllowance = zeroEx.token.UNLIMITED_ALLOWANCE_IN_BASE_UNITS; + await zeroEx.token.setAllowanceAsync(tokenAddress, owner, spender, initSpenderAllowance); + await zeroEx.token.transferFromAsync(tokenAddress, owner, spender, spender, amountToTransfer); + + const newSpenderAllowance = await zeroEx.token.getAllowanceAsync(tokenAddress, owner, spender); + expect(initSpenderAllowance).to.be.bignumber.equal(newSpenderAllowance); + }); + + it('should transfer the correct balances if spender has sufficient allowance', async () => { + const initOwnerBalance = await zeroEx.token.getBalanceAsync(tokenAddress, owner); + const amountToTransfer = initOwnerBalance; + const initSpenderAllowance = initOwnerBalance; + await zeroEx.token.setAllowanceAsync(tokenAddress, owner, spender, initSpenderAllowance); + await zeroEx.token.transferFromAsync(tokenAddress, owner, spender, spender, amountToTransfer); + + const newOwnerBalance = await zeroEx.token.getBalanceAsync(tokenAddress, owner); + const newSpenderBalance = await zeroEx.token.getBalanceAsync(tokenAddress, spender); + + expect(newOwnerBalance).to.be.bignumber.equal(0); + expect(newSpenderBalance).to.be.bignumber.equal(initOwnerBalance); + }); + + it('should modify allowance if spender has sufficient allowance less than 2^256 - 1', async () => { + const initOwnerBalance = await zeroEx.token.getBalanceAsync(tokenAddress, owner); + const amountToTransfer = initOwnerBalance; + const initSpenderAllowance = initOwnerBalance; + await zeroEx.token.setAllowanceAsync(tokenAddress, owner, spender, initSpenderAllowance); + await zeroEx.token.transferFromAsync(tokenAddress, owner, spender, spender, amountToTransfer); + + const newSpenderAllowance = await zeroEx.token.getAllowanceAsync(tokenAddress, owner, spender); + expect(newSpenderAllowance).to.be.bignumber.equal(0); + }); + }); +}); |