public function testWorksOnScalars()
{
// if true includes scalar
$this->assertEquals(['data' => ['a' => 'a', 'b' => 'b']], $this->executeTestQuery('{ a, b @include(if: true) }'));
// if false omits on scalar
$this->assertEquals(['data' => ['a' => 'a']], $this->executeTestQuery('{ a, b @include(if: false) }'));
// unless false includes scalar
$this->assertEquals(['data' => ['a' => 'a', 'b' => 'b']], $this->executeTestQuery('{ a, b @skip(if: false) }'));
// unless true omits scalar
$this->assertEquals(['data' => ['a' => 'a']], $this->executeTestQuery('{ a, b @skip(if: true) }'));
}