can we emulate print mode (media query print) for unit testing?

问题

can we emulate print mode (media query print) for unit testing? (Ract, enzyme, jest) i try:

window.matchMedia('print')

but it does not work for me, style media print not applied;

回答1:

I use iframe for printing and added some param to url for that. We can test printing using thit param:

window.location.hash = '?printMode=true'; // my variant

after that run component and lets try to write tests.

来源：https://stackoverflow.com/questions/47219643/can-we-emulate-print-mode-media-query-print-for-unit-testing