Check 'Maximum Order Quantity' update on Cart (OCC-183)

[agriffard]

When I want to add a discounted product that has a 'Maximum Order Quantity' = 2 an set 3 items, I get the expected message:
The checkout quantity for Test Discounted Product is more than the maximum allowed.

But when I am on the cart page and change the number of items to a number > 3, there is no such message so I could order more than 'Maximum Order Quantity' limit that is set.

Jira issue

[sarahelsaig]

Sorry, I wasn't able to reproduce this. Can you send a step-by-step or screen recording?

[porgabi]

Not OP, but I could reproduce by simply adding 1 Test Discounted Product to cart and then, within the cart, updating its quantity to 5, which shouldn't be possible as the max order quantity is set to 2.

[sarahelsaig]

That won't actually allow you to order more than the maximum though.

[porgabi]

I haven't encountered any errors while checking out with these parameters, so it seems possible:

firefox_sA8Yo2bSF6.mp4

[porgabi]

Additionally, if you check out with a quantity higher than the available inventory's value with back ordering disabled, you get a big friendly exception.

I think it just needs inventory checking added for the method that handles cart updating.