public function testDependencyHeavenExercise()
{
$e = new DependencyHeaven($this->faker);
$this->assertEquals('Dependency Heaven', $e->getName());
$this->assertEquals('An introduction to Composer dependency management', $e->getDescription());
$this->assertEquals(ExerciseType::CGI, $e->getType());
$this->assertInstanceOf(SolutionInterface::class, $e->getSolution());
$this->assertFileExists(realpath($e->getSolution()->getEntryPoint()));
$this->assertFileExists(realpath($e->getProblem()));
$this->assertNull($e->tearDown());
}