public function grade(CodingExecutionResult $result)
{
$result->assertVariableEquals('waggyPig', array('name' => 'Waggy Pig', 'weight' => 10, 'age' => 7, 'bio' => 'Sleepy white fluffy dog'));
$result->assertElementContains('h2', 'Waggy Pig');
// help them out - I reversed the order on the elements
if ($result->getElementText('.age') == '10') {
throw new GradingException('Careful! Be sure to print the `age` key in the `.age` element and the
`weight` key in the `.weight` element. You might have them reversed.');
}
$result->assertElementContains('.age', 7);
$result->assertElementContains('.weight', 10);
$result->assertElementContains('p', 'Sleepy white fluffy dog');
}
