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Diffstat (limited to 'contracts/erc20/test/zrx_token.ts')
| -rw-r--r-- | contracts/erc20/test/zrx_token.ts | 203 |
1 files changed, 203 insertions, 0 deletions
diff --git a/contracts/erc20/test/zrx_token.ts b/contracts/erc20/test/zrx_token.ts new file mode 100644 index 000000000..820b054e6 --- /dev/null +++ b/contracts/erc20/test/zrx_token.ts @@ -0,0 +1,203 @@ +import { chaiSetup, constants, provider, txDefaults, web3Wrapper } from '@0x/contracts-test-utils'; +import { BlockchainLifecycle } from '@0x/dev-utils'; +import { BigNumber } from '@0x/utils'; +import { Web3Wrapper } from '@0x/web3-wrapper'; +import * as chai from 'chai'; + +import { artifacts, ZRXTokenContract } from '../src'; + +chaiSetup.configure(); +const expect = chai.expect; +const blockchainLifecycle = new BlockchainLifecycle(web3Wrapper); + +describe('ZRXToken', () => { + let owner: string; + let spender: string; + let MAX_UINT: BigNumber; + let zrxToken: ZRXTokenContract; + + before(async () => { + await blockchainLifecycle.startAsync(); + }); + after(async () => { + await blockchainLifecycle.revertAsync(); + }); + before(async () => { + const accounts = await web3Wrapper.getAvailableAddressesAsync(); + owner = accounts[0]; + spender = accounts[1]; + zrxToken = await ZRXTokenContract.deployFrom0xArtifactAsync(artifacts.ZRXToken, provider, txDefaults); + MAX_UINT = constants.UNLIMITED_ALLOWANCE_IN_BASE_UNITS; + }); + beforeEach(async () => { + await blockchainLifecycle.startAsync(); + }); + afterEach(async () => { + await blockchainLifecycle.revertAsync(); + }); + describe('constants', () => { + it('should have 18 decimals', async () => { + const decimals = new BigNumber(await zrxToken.decimals.callAsync()); + const expectedDecimals = 18; + expect(decimals).to.be.bignumber.equal(expectedDecimals); + }); + + it('should have a total supply of 1 billion tokens', async () => { + const totalSupply = new BigNumber(await zrxToken.totalSupply.callAsync()); + const expectedTotalSupply = 1000000000; + expect(Web3Wrapper.toUnitAmount(totalSupply, 18)).to.be.bignumber.equal(expectedTotalSupply); + }); + + it('should be named 0x Protocol Token', async () => { + const name = await zrxToken.name.callAsync(); + const expectedName = '0x Protocol Token'; + expect(name).to.be.equal(expectedName); + }); + + it('should have the symbol ZRX', async () => { + const symbol = await zrxToken.symbol.callAsync(); + const expectedSymbol = 'ZRX'; + expect(symbol).to.be.equal(expectedSymbol); + }); + }); + + describe('constructor', () => { + it('should initialize owner balance to totalSupply', async () => { + const ownerBalance = await zrxToken.balanceOf.callAsync(owner); + const totalSupply = new BigNumber(await zrxToken.totalSupply.callAsync()); + expect(totalSupply).to.be.bignumber.equal(ownerBalance); + }); + }); + + describe('transfer', () => { + it('should transfer balance from sender to receiver', async () => { + const receiver = spender; + const initOwnerBalance = await zrxToken.balanceOf.callAsync(owner); + const amountToTransfer = new BigNumber(1); + await web3Wrapper.awaitTransactionSuccessAsync( + await zrxToken.transfer.sendTransactionAsync(receiver, amountToTransfer, { from: owner }), + constants.AWAIT_TRANSACTION_MINED_MS, + ); + const finalOwnerBalance = await zrxToken.balanceOf.callAsync(owner); + const finalReceiverBalance = await zrxToken.balanceOf.callAsync(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 zrxToken.transfer.callAsync(spender, new BigNumber(0), { + from: owner, + }); + expect(didReturnTrue).to.be.true(); + }); + }); + + describe('transferFrom', () => { + it('should return false if owner has insufficient balance', async () => { + const ownerBalance = await zrxToken.balanceOf.callAsync(owner); + const amountToTransfer = ownerBalance.plus(1); + await web3Wrapper.awaitTransactionSuccessAsync( + await zrxToken.approve.sendTransactionAsync(spender, amountToTransfer, { + from: owner, + gas: constants.MAX_TOKEN_APPROVE_GAS, + }), + constants.AWAIT_TRANSACTION_MINED_MS, + ); + const didReturnTrue = await zrxToken.transferFrom.callAsync(owner, spender, amountToTransfer, { + from: spender, + }); + expect(didReturnTrue).to.be.false(); + }); + + it('should return false if spender has insufficient allowance', async () => { + const ownerBalance = await zrxToken.balanceOf.callAsync(owner); + const amountToTransfer = ownerBalance; + + const spenderAllowance = await zrxToken.allowance.callAsync(owner, spender); + const isSpenderAllowanceInsufficient = spenderAllowance.comparedTo(amountToTransfer) < 0; + expect(isSpenderAllowanceInsufficient).to.be.true(); + + const didReturnTrue = await zrxToken.transferFrom.callAsync(owner, spender, amountToTransfer, { + from: spender, + }); + expect(didReturnTrue).to.be.false(); + }); + + it('should return true on a 0 value transfer', async () => { + const amountToTransfer = new BigNumber(0); + const didReturnTrue = await zrxToken.transferFrom.callAsync(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 zrxToken.balanceOf.callAsync(owner); + const amountToTransfer = initOwnerBalance; + const initSpenderAllowance = MAX_UINT; + await web3Wrapper.awaitTransactionSuccessAsync( + await zrxToken.approve.sendTransactionAsync(spender, initSpenderAllowance, { + from: owner, + gas: constants.MAX_TOKEN_APPROVE_GAS, + }), + constants.AWAIT_TRANSACTION_MINED_MS, + ); + await web3Wrapper.awaitTransactionSuccessAsync( + await zrxToken.transferFrom.sendTransactionAsync(owner, spender, amountToTransfer, { + from: spender, + gas: constants.MAX_TOKEN_TRANSFERFROM_GAS, + }), + constants.AWAIT_TRANSACTION_MINED_MS, + ); + + const newSpenderAllowance = await zrxToken.allowance.callAsync(owner, spender); + expect(initSpenderAllowance).to.be.bignumber.equal(newSpenderAllowance); + }); + + it('should transfer the correct balances if spender has sufficient allowance', async () => { + const initOwnerBalance = await zrxToken.balanceOf.callAsync(owner); + const initSpenderBalance = await zrxToken.balanceOf.callAsync(spender); + const amountToTransfer = initOwnerBalance; + const initSpenderAllowance = initOwnerBalance; + await web3Wrapper.awaitTransactionSuccessAsync( + await zrxToken.approve.sendTransactionAsync(spender, initSpenderAllowance), + constants.AWAIT_TRANSACTION_MINED_MS, + ); + await web3Wrapper.awaitTransactionSuccessAsync( + await zrxToken.transferFrom.sendTransactionAsync(owner, spender, amountToTransfer, { + from: spender, + gas: constants.MAX_TOKEN_TRANSFERFROM_GAS, + }), + constants.AWAIT_TRANSACTION_MINED_MS, + ); + + const newOwnerBalance = await zrxToken.balanceOf.callAsync(owner); + const newSpenderBalance = await zrxToken.balanceOf.callAsync(spender); + + expect(newOwnerBalance).to.be.bignumber.equal(0); + expect(newSpenderBalance).to.be.bignumber.equal(initSpenderBalance.plus(initOwnerBalance)); + }); + + it('should modify allowance if spender has sufficient allowance less than 2^256 - 1', async () => { + const initOwnerBalance = await zrxToken.balanceOf.callAsync(owner); + const amountToTransfer = initOwnerBalance; + await web3Wrapper.awaitTransactionSuccessAsync( + await zrxToken.approve.sendTransactionAsync(spender, amountToTransfer), + constants.AWAIT_TRANSACTION_MINED_MS, + ); + await web3Wrapper.awaitTransactionSuccessAsync( + await zrxToken.transferFrom.sendTransactionAsync(owner, spender, amountToTransfer, { + from: spender, + gas: constants.MAX_TOKEN_TRANSFERFROM_GAS, + }), + constants.AWAIT_TRANSACTION_MINED_MS, + ); + + const newSpenderAllowance = await zrxToken.allowance.callAsync(owner, spender); + expect(newSpenderAllowance).to.be.bignumber.equal(0); + }); + }); +}); |