mageekguy\atoum\asserters\adapter\call::atLeastOnce PHP Method

    public function atLeastOnce($failMessage = null)
    {
        $this->removeFromManager();
        if ($this->countBeforeAndAfterCalls() >= 1) {
            $this->pass();
        } else {
            $this->fail($failMessage ?: $this->_('%s is called 0 time', $this->call) . $this->getCallsAsString());
        }
        return $this;
    }