return function(expected)
    return {
        messages = {
            affirmative = {
                standard = "{{placeholder}} must be equal to {{expected}}"
            },
            negative = {
                standard = "{{placeholder}} cannot be equal to {{expected}}"
            }
        },
        apply = function(context)
            context.expected = expected
            context.result = context.input == expected
        end
    }
end