public function testLength()
{
$t = new StringMethods();
$this->assertSame(5, $t->getLength1());
$this->assertSame(5, $t->getLength2());
$this->assertSame(10, $t->getLength3());
$this->assertSame(3, $t->getLength4('foo'));
$this->assertSame(8, $t->getLength5('bar'));
}