Waffle: Use fixture

test.js

it('Assigns initial balance', async () => {
  const {token, wallet} = await loadFixture(fixture);
  expect(await token.balanceOf(wallet.address)).to.eq(1000);
});

it('Transfer adds amount to destination account', async () => {
  const {token, other} = await loadFixture(fixture);
  await token.transfer(other.address, 7);
  expect(await token.balanceOf(other.address)).to.eq(7);
});