getFakeRule example

$discount = new PromotionDiscountEntity();
        $discount->setId('D5');
        $discount->setType(PromotionDiscountEntity::TYPE_ABSOLUTE);
        $discount->setValue(50);
        $discount->setConsiderAdvancedRules(true);
        $discount->setScope(PromotionDiscountEntity::SCOPE_CART);

        $amount = 100;
        $operator = '=';

        $discountFilter = $this->getFakeRule($amount, $operator);

        $discountRuleEntity = new RuleEntity();
        $discountRuleEntity->setId('foo');
        $discountRuleEntity->setPayload($discountFilter);

        $ruleCollection = new RuleCollection();
        $ruleCollection->add($discountRuleEntity);
        $discount->setDiscountRules($ruleCollection);

        $expectedRule = new OrRule();
        $expectedRule->addRule($discountFilter);