former 2.45.0

A flexible implementation of the Builder pattern supporting nested builders and collection-specific subformers. Simplify the construction of complex objects.
Documentation 
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#[allow(clippy::used_underscore_binding, clippy::all, warnings)]
#[ allow( unused_imports ) ]
use super::*;
#[ allow( unused_imports ) ]

//

tests_impls!
{

  //

  fn api()
  {

    // form
    let command = Struct1::former().form();
    a_id!( command.int_1, 0 );
    a_id!( command.string_1, "".to_string() );
    a_id!( command.int_optional_1, None );
    a_id!( command.string_optional_1, None );

    // end
    let command = Struct1::former().end();
    a_id!( command.int_1, 0 );
    a_id!( command.string_1, "".to_string() );
    a_id!( command.int_optional_1, None );
    a_id!( command.string_optional_1, None );

    // perform
    let command = Struct1::former().perform();
    a_id!( command.int_1, 0 );
    a_id!( command.string_1, "".to_string() );
    a_id!( command.int_optional_1, None );
    a_id!( command.string_optional_1, None );

    // formation should have method preform
    let got = Struct1::former().preform();
    let exp = Struct1::former().form();
    a_id!( got, exp );

    // default explicit params with wrapper and closure
    let got = Struct1Former
    ::< Struct1FormerDefinition< (), Struct1, _ > >
    ::new( | storage, _context | { former::StoragePreform::preform( storage ) } )
    .int_1( 13 )
    .form();
    let exp = Struct1::former().int_1( 13 ).form();
    a_id!( got, exp );

  }

  //

  fn test_int()
  {

    // test.case( "basic" );

    let command = Struct1::former()
    .int_1( 13 )
    .form();
    // dbg!( &command );

    let expected = Struct1
    {
      int_1 : 13,
      string_1 : "".to_string(),
      int_optional_1 : None,
      string_optional_1 : None,
    };
    a_id!( command, expected );

    // test.case( "rewriting" );

    // should_throw( ||
    // {
    //   let _command = Struct1::former()
    //   .int_1( 1 )
    //   .int_1( 3 )
    //   .form();
    //   Ok( () )
    // })?;
  }

  //

  fn test_string()
  {

    // test.case( "string : object" );

    let command = Struct1::former()
    .string_1( "Abcd".to_string() )
    .form();
    // dbg!( &command );

    let expected = Struct1
    {
      int_1 : 0,
      string_1 : "Abcd".to_string(),
      int_optional_1 : None,
      string_optional_1 : None,
    };
    a_id!( command, expected );

    // test.case( "string : slice" );

    let command = Struct1::former()
    .string_1( "Abcd" )
    .form();
    // dbg!( &command );

    let expected = Struct1
    {
      int_1 : 0,
      string_1 : "Abcd".to_string(),
      int_optional_1 : None,
      string_optional_1 : None,
    };
    a_id!( command, expected );

    // test.case( "string : rewriting" );

    // should_throw( ||
    // {
    //   let _command = Struct1::former()
    //   .string_1( "dir1" )
    //   .string_1( "dir2" )
    //   .form();
    //   Ok( () )
    // })?;
  }

  //

  fn test_optional_string()
  {

    // test.case( "basic" );

    let command = Struct1::former()
    .string_optional_1( "dir1" )
    .form();
    // dbg!( &command );

    let expected = Struct1
    {
      int_1 : 0,
      string_1 : "".to_string(),
      int_optional_1 : None,
      string_optional_1 : Some( "dir1".to_string() ),
    };
    a_id!( command, expected );

    // test.case( "none" );

    let command = Struct1::former()
    .form();
    // dbg!( &command );

    let expected = Struct1
    {
      int_1 : 0,
      string_1 : "".to_string(),
      int_optional_1 : None,
      string_optional_1 : None,
    };
    a_id!( command, expected );

    // test.case( "optional : rewriting" );

    // should_throw( ||
    // {
    //   let _command = Struct1::former()
    //   .string_optional_1( "dir1" )
    //   .string_optional_1( "dir2" )
    //   .form();
    //   Ok( () )
    // })?;
  }

  //

  fn test_underscored_form()
  {
    // test.case( "basic" );
    let command = Struct1::former()
    .int_1( 13 )
    .form();

    let expected = Struct1
    {
      int_1 : 13,
      string_1 : "".to_string(),
      int_optional_1 : None,
      string_optional_1 : None,
    };
    a_id!( command, expected );
  }

  //

  fn test_complex()
  {
    let command = Struct1::former()
    .int_1( 13 )
    .string_1( "Abcd".to_string() )
    // .vec_1().push( "ghi" ).push( "klm" ).end()
    // .hashmap_1().insert( "k1", "v1" ).insert( "k2", "v2" ).end()
    .string_optional_1( "dir1" )
    .form();
    // dbg!( &command );

    let expected = Struct1
    {
      int_1 : 13,
      string_1 : "Abcd".to_string(),
      int_optional_1 : None,
      string_optional_1 : Some( "dir1".to_string() ),
    };
    a_id!( command, expected );

    #[ cfg( debug_assertions ) ]
    println!( "Debugging enabled" );
    #[ cfg( not( debug_assertions ) ) ]
    println!( "Debugging disabled" );
  }

}

//

tests_index!
{
  api,

  test_int,
  test_string,
  test_optional_string,
  test_underscored_form,
  test_complex,
}