mageekguy\atoum\asserters\phpArray::offsetGet PHP Method

    public function offsetGet($key)
    {
        if ($this->innerAsserter === null) {
            if ($this->analyzer->isArray($this->hasKey($key)->value[$key]) === true) {
                parent::setWith($this->value[$key]);
            } else {
                $this->fail($this->_('Value %s at key %s is not an array', $this->getTypeOf($this->value[$key]), $key));
            }
        } else {
            if (array_key_exists($key, $this->innerValue) === false) {
                $this->fail($this->_('%s has no key %s', $this->getTypeOf($this->innerValue), $this->getTypeOf($key)));
            } else {
                $this->innerValue = $this->innerValue[$key];
                $this->innerValueIsSet = true;
            }
        }
        return $this;
    }