public function testIsAssocArray()
{
$arr = array(1, 2, 3);
$this->assertEquals(false, PPArrayUtil::isAssocArray($arr));
$arr = array('name' => 'John Doe', 'City' => 'San Jose');
$this->assertEquals(true, PPArrayUtil::isAssocArray($arr));
$arr[] = 'CA';
$this->assertEquals(false, PPArrayUtil::isAssocArray($arr));
}
