Macro run_with_tempdir 

macro_rules! run_with_tempdir {
    (
        name: $test_name:ident,
        code: $code:literal,
        setup: |$temp_dir:ident| $setup:block,
        expect_error
    ) => { ... };
    (
        name: $test_name:ident,
        code: $code:literal,
        setup: |$temp_dir:ident| $setup:block,
        verify: |$verify_dir:ident| $verify:block
    ) => { ... };
    (
        name: $test_name:ident,
        code: $code:literal,
        setup: |$temp_dir:ident| $setup:block,
        expect: $expect_payload:expr
        $(, verify: |$verify_dir:ident| $verify:block)?
    ) => { ... };
}