Macro test_function 

macro_rules! test_function {
    ($name:tt => $func:path; $($case:ident { args: $args:expr_2021, want: $(Ok($ok:expr_2021))? $(Err($err:expr_2021))?, tdef: $tdef:expr_2021,  $(,)* })+) => { ... };
    ($name:tt => $func:path; $($case:ident { args: $args:expr_2021, want: $(Ok($ok:expr_2021))? $(Err($err:expr_2021))?, tdef: $tdef:expr_2021, tz: $tz:expr_2021,  $(,)* })+) => { ... };
    ($name:tt => $func:path; before_each => $before:block $($case:ident { args: $args:expr_2021, want: $(Ok($ok:expr_2021))? $(Err($err:expr_2021))?, tdef: $tdef:expr_2021,  $(,)* })+) => { ... };
    ($name:tt => $func:path; before_each => $before:block $($case:ident { args: $args:expr_2021, want: $(Ok($ok:expr_2021))? $(Err($err:expr_2021))?, tdef: $tdef:expr_2021, tz: $tz:expr_2021,  $(,)* })+) => { ... };
}