feat(usable-token): update test

- Expect allowance to be a mapping(address => uint)

tests/sol/usable-token.test.js

@@ -1,36 +1,36 @@
-const { expect } = require("chai")
+const { expect } = require('chai')
 
-describe("Usable token (Allowances)", function() {
+describe('Usable token (Allowances)', function () {
   let minito, owner, alice, bob
 
-  beforeEach(async ()=>{
-    const contractDeployer = await ethers.getContractFactory("UsableToken");
-    [owner, alice, bob] = await ethers.getSigners()
+  beforeEach(async () => {
+    const contractDeployer = await ethers.getContractFactory('UsableToken')
+    ;[owner, alice, bob] = await ethers.getSigners()
     minito = await contractDeployer.deploy(200)
     await minito.deployed()
   })
-  it("Deploy account should have 200 units ", async function() {
+  it('Deploy account should have 200 units ', async function () {
     expect(await minito.accounts(owner.address)).to.equal(200)
   })
 
-  it("Too large transaction should fail", async function() {
-    await expect( minito.transfer(alice.address, 2000)).to.be.reverted
+  it('Too large transaction should fail', async function () {
+    await expect(minito.transfer(alice.address, 2000)).to.be.reverted
   })
-  it("Transfer should change balances", async function() {
+  it('Transfer should change balances', async function () {
     await minito.transfer(alice.address, 150)
     expect(await minito.accounts(alice.address)).to.equal(150)
-
   })
 
-  it("Owner can approve and allowance corresponds", async function() {
+  it('Owner can approve and allowance corresponds', async function () {
     await minito.approve(alice.address, 23)
-    expect(await minito.allowance(owner.address, alice.address)).to.equal(23)
+    expect(await minito.allowance(alice.address)).to.equal(23)
   })
 
-  it("Too large transferFrom should fail", async function() {
+  it('Too large transferFrom should fail', async function () {
     await minito.approve(bob.address, 23)
 
-    await expect( minito.connect(bob).transferFrom(owner.address, alice.address, 2000)).to.be.reverted
+    await expect(
+      minito.connect(bob).transferFrom(owner.address, alice.address, 2000),
+    ).to.be.reverted
   })
-
 })