Use GameTest framework to test for regressions on several scenarios that are easy but time consuming to test:

• Umbrella slow falling
• Umbrella blocks wet status from rain
• Umbrella blocks sunlight for Origins and Haema
• Crystal Heart awards extra hearts (equip/unequip)
• Antidote Vessel shortens bad effect duration
• Universal Attractor attracts far away items
• Kitty Slippers scare creepers away

The following items are easy to test but are simple enough to not need a test (for now):

• Steadfast spikes
• Bunny Hoppers
• Feral Claws
• Power Glove
• Night Vision Goggles
• Snorkel
• Scarf of Invisibility

The following items are hard to test, most require complicated player input:

• Helium Flamingo
• Cloud in a Bottle
• Aqua Dashers
• Running Shoes
• Digging Claws
• Charm of Sinking