/**
  * @covers WindowsAzure\Table\Models\Entity::isValid
  */
 public function testIsValidWithEmptyPartitionKey()
 {
     // Setup
     $entity = new Entity();
     $entity->addProperty('name', EdmType::STRING, 'string');
     // Assert
     $actual = $entity->isValid();
     // Assert
     $this->assertFalse($actual);
 }