use Test;

plan 39;

is { sub a(Int $a)   { $a }; a Int }(), Int, 'can Int   take an Int:U';
is { sub a(Int $a)   { $a }; a 42  }(),  42, 'can Int   take an Int:D';
is { sub a(Int:_ $a) { $a }; a Int }(), Int, 'can Int:_ take an Int:U';
is { sub a(Int:_ $a) { $a }; a 42  }(),  42, 'can Int:_ take an Int:D';
is { sub a(Int:U $a) { $a }; a Int }(), Int, 'can Int:U take an Int:U';
throws-like { sub a(Int:U $a) { $a }; a 42 },
  Exception,                                  'can Int:U take an Int:D';
throws-like { sub a(Int:D $a) { $a }; a Int },
  Exception,                                  'can Int:D take an Int:U';
is { sub a(Int:D $a) { $a }; a 42  }(),  42, 'can Int:D take an Int:D';
throws-like 'sub a(Int:foo $a) { $a }',
  X::InvalidTypeSmiley,                      'does Int:foo fail';

is { sub a(--> Int)   { Int }; a  }(), Int, 'can --> Int   return an Int:U';
is { sub a(--> Int)   { 42  }; a  }(),  42, 'can --> Int   return an Int:D';
is { sub a(--> Int:_) { Int }; a  }(), Int, 'can --> Int:_ return an Int:U';
is { sub a(--> Int:_) { 42  }; a  }(),  42, 'can --> Int:_ return an Int:D';
is { sub a(--> Int:U) { Int }; a  }(), Int, 'can --> Int:U return an Int:U';
# https://github.com/Raku/old-issue-tracker/issues/4627
throws-like { sub a(--> Int:U) {  42 }; a },
  X::TypeCheck::Return,                     'can --> Int:U return an Int:D';
throws-like { sub a(--> Int:D) { Int }; a },
  X::TypeCheck::Return,                     'can --> Int:D return an Int:U';
is { sub a(--> Int:D) { 42  }; a  }(),  42, 'can --> Int:D return an Int:D';
throws-like 'sub a(--> Int:foo) { }',
  X::InvalidTypeSmiley,                     'does --> Int:foo fail';

#?rakudo skip 'use parameters is NYI until further notice'
{
    use parameters :_;
    is { sub a(Int $a) { $a }; a Int }(), Int, 'with :_, can Int take an Int:U';
    is { sub a(Int $a) { $a }; a  42 }(),  42, 'with :_, can Int take an Int:D';
    is { sub a(--> Int) { Int }() }(), Int, 'with :_, can --> Int return Int:U';
    is { sub a(--> Int) {  42 }() }(),  42, 'with :_, can --> Int return Int:D';
}

#?rakudo skip 'use parameters is NYI until further notice'
{
    use parameters :U;
    is { sub a(Int $a) { $a }; a Int }(), Int, 'with :U, can Int take an Int:U';
    dies-ok { sub a(Int $a) { $a }; a 42 },  # change to throws-like if passes
      'with :U, can Int take an Int:D';
    is { sub a(--> Int) { Int }() }(), Int, 'with :U, can --> Int return Int:U';
    dies-ok { sub a(--> Int) { 42 }() },  # change to throws-like if passes
      'with :U, can --> Int return an Int:D';
}

#?rakudo skip 'use parameters is NYI until further notice'
{
    use parameters :D;
    #?rakudo todo 'not yet checking parameters pragma'
    dies-ok { sub a(Int $a) { $a }; a Int },  # change to throws-like if passes
      'with :D, can Int take an Int:U';
    is { sub a(Int $a) { $a }; a  42 }(),  42, 'with :D, can Int take an Int:D';
    #?rakudo todo 'not yet checking parameters pragma'
    dies-ok { sub a(--> Int) { Int }() },  # change to throws-like if passes
      'with :D, can --> Int return an Int:U';
    is { sub a(--> Int) { 42 }() }(), 42, 'with :D, can --> Int return Int:D';
}

#?rakudo 5 skip 'use parameters is NYI until further notice'
throws-like 'use parameters',        X::Pragma::MustOneOf,  :name<parameters>,
    'use parameters';
throws-like 'no parameters',         X::Pragma::CannotWhat, :name<parameters>,
    :what<no>, 'no parameters';
throws-like 'use parameters "bar"',  X::Pragma::UnknownArg, :name<parameters>,
    :arg<bar>, 'use parameters "bar"';
throws-like 'use parameters :U, :D', X::Pragma::OnlyOne,    :name<parameters>,
    'use parameters :U, :D';
throws-like 'use parameters :foo',   X::InvalidTypeSmiley,  :name<foo>,
    'does use parameters :foo fail';

# https://github.com/Raku/old-issue-tracker/issues/5214
is Int:U        .gist, '(Int:U)',   '.gist on :U smileys';
is Proc::Async:U.gist, '(Async:U)', '.gist on :U smileys uses shortname';
is Int:D        .gist, '(Int:D)',   '.gist on :D smileys';
is Proc::Async:D.gist, '(Async:D)', '.gist on :D smileys uses shortname';

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