70fd243e3b
* signing prefix added
* Minor improvement
* Tests changed
* Successfully tested
* Minor improvements
* Minor improvements
* Revert "Dangling commas are now required. (#1359)"
This reverts commit a6889776f4.
* updates
* fixes #1404
* approve failing test
* suggested changes done
* ISafeERC20 removed
* conflict fixes
* fixes #1205
* minor change
* suggested changes
* reviewed changes
* final update
94 lines
3.1 KiB
JavaScript
94 lines
3.1 KiB
JavaScript
const shouldFail = require('../../helpers/shouldFail');
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require('../../helpers/setup');
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const SafeERC20Helper = artifacts.require('SafeERC20Helper');
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contract('SafeERC20', function () {
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beforeEach(async function () {
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this.helper = await SafeERC20Helper.new();
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});
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describe('with token that returns false on all calls', function () {
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it('reverts on transfer', async function () {
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await shouldFail.reverting(this.helper.doFailingTransfer());
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});
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it('reverts on transferFrom', async function () {
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await shouldFail.reverting(this.helper.doFailingTransferFrom());
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});
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it('reverts on approve', async function () {
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await shouldFail.reverting(this.helper.doFailingApprove());
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});
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it('reverts on increaseAllowance', async function () {
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await shouldFail.reverting(this.helper.doFailingIncreaseAllowance());
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});
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it('reverts on decreaseAllowance', async function () {
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await shouldFail.reverting(this.helper.doFailingDecreaseAllowance());
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});
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});
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describe('with token that returns true on all calls', function () {
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it('doesn\'t revert on transfer', async function () {
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await this.helper.doSucceedingTransfer();
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});
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it('doesn\'t revert on transferFrom', async function () {
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await this.helper.doSucceedingTransferFrom();
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});
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describe('approvals', function () {
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context('with zero allowance', function () {
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beforeEach(async function () {
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await this.helper.setAllowance(0);
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});
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it('doesn\'t revert when approving a non-zero allowance', async function () {
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await this.helper.doSucceedingApprove(100);
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});
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it('doesn\'t revert when approving a zero allowance', async function () {
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await this.helper.doSucceedingApprove(0);
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});
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it('doesn\'t revert when increasing the allowance', async function () {
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await this.helper.doSucceedingIncreaseAllowance(10);
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});
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it('reverts when decreasing the allowance', async function () {
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await shouldFail.reverting(this.helper.doSucceedingDecreaseAllowance(10));
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});
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});
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context('with non-zero allowance', function () {
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beforeEach(async function () {
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await this.helper.setAllowance(100);
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});
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it('reverts when approving a non-zero allowance', async function () {
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await shouldFail.reverting(this.helper.doSucceedingApprove(20));
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});
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it('doesn\'t revert when approving a zero allowance', async function () {
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await this.helper.doSucceedingApprove(0);
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});
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it('doesn\'t revert when increasing the allowance', async function () {
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await this.helper.doSucceedingIncreaseAllowance(10);
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});
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it('doesn\'t revert when decreasing the allowance to a positive value', async function () {
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await this.helper.doSucceedingDecreaseAllowance(50);
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});
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it('reverts when decreasing the allowance to a negative value', async function () {
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await shouldFail.reverting(this.helper.doSucceedingDecreaseAllowance(200));
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});
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});
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});
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});
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});
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