ens-usernames/test/erc20token.js

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describe("ERC20Token", async function() {
this.timeout(0);
var ERC20Token;
var accountsArr;
before(function(done) {
this.timeout(0);
var contractsConfig = {
"TestToken": {
}
};
EmbarkSpec.deployAll(contractsConfig, async function(accounts) {
ERC20Token = TestToken;
accountsArr = accounts;
for(i=0;i<accountsArr.length;i++){
await ERC20Token.methods.mint(100).send({from: accountsArr[i]})
}
done()
});
});
it("should transfer 1 token", async function() {
let initialBalance0 = await ERC20Token.methods.balanceOf(accountsArr[0]).call();
let initialBalance1 = await ERC20Token.methods.balanceOf(accountsArr[1]).call();
await ERC20Token.methods.transfer(accountsArr[1],1).send({from: accountsArr[0]});
let result0 = await ERC20Token.methods.balanceOf(accountsArr[0]).call();
let result1 = await ERC20Token.methods.balanceOf(accountsArr[1]).call();
assert.equal(result0, +initialBalance0-1);
assert.equal(result1, +initialBalance1+1);
});
it("should set approved amount", async function() {
await ERC20Token.methods.approve(accountsArr[2],10000000).send({from: accountsArr[0]});
let result = await ERC20Token.methods.allowance(accountsArr[0], accountsArr[2]).call();
assert.equal(result, 10000000);
});
it("should consume allowance amount", async function() {
let initialAllowance = await ERC20Token.methods.allowance(accountsArr[0], accountsArr[2]).call();
await ERC20Token.methods.transferFrom(accountsArr[0], accountsArr[0],1).send({from: accountsArr[2]});
let result = await ERC20Token.methods.allowance(accountsArr[0], accountsArr[2]).call();
assert.equal(result, +initialAllowance-1);
});
it("should transfer approved amount", async function() {
let initialBalance0 = await ERC20Token.methods.balanceOf(accountsArr[0]).call();
let initialBalance1 = await ERC20Token.methods.balanceOf(accountsArr[1]).call();
await ERC20Token.methods.transferFrom(accountsArr[0], accountsArr[1],1).send({from: accountsArr[2]});
let result0 = await ERC20Token.methods.balanceOf(accountsArr[0]).call();
let result1 = await ERC20Token.methods.balanceOf(accountsArr[1]).call();
assert.equal(result0, +initialBalance0-1);
assert.equal(result1, +initialBalance1+1);
});
it("should unset approved amount", async function() {
await ERC20Token.methods.approve(accountsArr[2],0).send({from: accountsArr[0]});
let result = await ERC20Token.methods.allowance(accountsArr[0], accountsArr[2]).call();
assert.equal(result, 0);
});
//TODO: include checks for expected events fired
});