ahem/spec/ast/class_definition_spec.rb

RSpec.describe AST::ClassDefinition do
  it 'defines a class' do
    env = Environment.new(env)
    klass = AST::ClassDefinition.new(
      AST::Identifier.new('Class'), [], []
    )
    klass.execute(env)
    expect(env.get('Class')).to eq(klass)
  end
end