public function testBasicOffsetUnset()
{
$key = 'test';
$value = uniqid($key . ':');
$a = [$key => $value];
$o = new ArrayModel($a);
$this->assertEquals($value, $o[$key]);
$o->offsetUnset($key);
$this->assertNull($o[$key]);
}
public function testOffsetExistsWithAndWithoutCorrectKey()
{
$key = 'test';
$value = uniqid($key . ':');
$a = [$key => $value];
$o = new ArrayModel($a);
$this->assertTrue($o->offsetExists($key));
$this->assertFalse($o->offsetExists(uniqid()));
$o->offsetUnset($key);
$this->assertFalse($o->offsetExists($key));
}