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/// Internal namespace.
pub mod internal
{

  ///
  /// Mechanism to define test suite.
  /// This macro encourages refactoring the code of the test in the most readable way, gathering a list of all test routines at the end of the test file.
  ///
  /// Name of test routine should have postfix `*_test`. In the index of test routine the postfix should be ommited.
  ///
  /// # Sample
  /// use wtest_basic::*;
  ///
  /// //
  ///
  /// fn pass1_test()
  /// {
  ///   assert_eq!( true, true );
  /// }
  ///
  /// //
  ///
  /// fn pass2_test()
  /// {
  ///   assert_eq!( 1, 1 );
  /// }
  ///
  /// //
  ///
  /// test_suite!
  /// {
  ///   pass1,
  ///   pass2,
  /// }
  ///

  #[ macro_export ]
  macro_rules! test_suite
  {

    () => { };

    (
      $( #[ $Meta : meta ] )*
      $Name : ident ,
      $( $Rest : tt )*
    )
    =>
    {
      $( #[ $Meta ] )*
      #[test]
      fn $Name()
      {
        $crate::paste::paste!([< $Name _test >])()
      }
      $crate::test_suite!( $( $Rest )* );
    };

  }

//   ///
//   /// Internals of a test suite.
//   ///
//
//   #[ macro_export ]
//   macro_rules! impls
//   {
//
//     // ( $( $Rest : tt )* ) => { fn f1() {} };
//
//     () => {};
//
//     (
//       $( #[ $Meta : meta ] )*
//       fn $Name : ident $( $Rest : tt )*
//     )
//     =>
//     {
//       $crate::test_suite_internals!
//       {
//         @DEFINE_FN
//         @NAME $Name
//         @REST
//           $( #[ $Meta ] )*
//           fn $Name $( $Rest )*
//       }
//     };
//
//     (
//       @DEFINE_FN
//       @NAME $Name : ident
//       @REST
//         $Item : item
//         // $( #[ $Meta : meta ] )*
//         // fn $Name : ident
//         // $Parentheses : tt
//         // $Block : block
//         $( $Rest : tt )*
//     )
//     =>
//     {
//       macro_rules! $Name
//       {
//         () =>
//         {
//           $Item
//         };
//       }
//
//       // macro_rules! $Name
//       // {
//       //   $( #[ $Meta ] )*
//       //   fn $Name
//       //   $Parentheses
//       //   $Block
//       // }
//
//       $crate::test_suite_internals!
//       {
//         $( $Rest )*
//       }
//     };
//
//   }
//
//   ///
//   /// Index of items.
//   ///
//
//   #[ macro_export ]
//   macro_rules! index
//   {
//
//     () => { };
//
//     (
//       $Name : ident ,
//       $( $Rest : tt )*
//     )
//     =>
//     {
//       $Name!();
//       $crate::index!( $( $Rest )* );
//     };
//
//   }

  // /// Pass only if callback fails either returning error or panicing.
  //
  // pub fn should_throw< R, F : FnOnce() -> anyhow::Result< R > >( f : F ) -> anyhow::Result< R >
  // {
  //   f()
  // }

  //

  // #[panic_handler]
  // fn panic( info : &core::panic::PanicInfo ) -> !
  // {
  //   println!( "{:?}", info );
  //   loop {}
  // }

  pub use test_suite;
  // pub use test_suite_internals;
  // pub use index;
}

/// Exposed namespace of the module.
pub mod exposed
{
  use super::internal as i;
  pub use super::prelude::*;
  pub use i::test_suite;
}

pub use exposed::*;

/// Prelude to use: `use wtools::prelude::*`.
pub mod prelude
{
  use super::internal as i;
  pub use i::test_suite;
}