How can I test with Internet Explorer while on my Mac?
I have the perfect solution! In 2013, Microsoft released a free officially-supported solution to help Mac developers test with Internet Explorer versions 6, 7, 8, 9, 10, and 11 on Macs:


Go to https://developer.microsoft.com/en-us/microsoft-edge/tools/vms/
Select your desired testing OS ("Mac")
Pick a virtualization platform from among VMWare, Parallels, and VirtualBox. If in doubt, choose VirtualBox (which you can download from the VirtualBox site)
Follow the directions to download VMs for the version of IE + Windows you want


Hope this helps.