Prank Payable

testPrankPayable.sol

interface Vm {
    function prank(address) external;
}

contract Foo {
    function bar() public {
        require(msg.sender == address(1), 'wrong sender');
    }

    function barPayable() public payable {
        require(msg.sender == address(1), 'wrong sender');
    }
}


contract MyTest is DSTest {
    Vm vm = Vm(0x7109709ECfa91a80626fF3989D68f67F5b1DD12D);
    Foo foo;

    function setUp() public {
        foo = new Foo();
    }

    function testBar() public {
        address new_sender = address(1);
        vm.prank(new_sender);
        foo.bar();
    }

    function testBarPayable() public {
        address new_sender = address(1);
        vm.prank(new_sender);
        foo.barPayable();
    }
}