investSingle

function investSingle(
    address _token,
    uint256 _amountDesired,
    uint256 _period,
    uint _deadline
)external ensure(_deadline)

// 토큰 허용
await mockToken0Contract.approve(stakingRouterContract.address, MaxUint256)

await stakingRouterContract.investSingle(
     mockToken0Contract.address,
     ethers.utils.parseEther("100.0"),
     0,
     MaxUint256
)