GetOptionKit\Option::getValue PHP Method

    public function getValue()
    {
        if (null !== $this->value) {
            return $this->value;
        }
        return $this->defaultValue;
    }

 public function testDefaultValue()
 {
     $opt = new Option('z');
     $opt->defaultValue(10);
     $this->assertEquals(10, $opt->getValue());
     $this->assertEquals('-z[=10]', $opt->renderReadableSpec(true));
 }