standardize use of displayElement
in tests
#3486
Merged
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this PR moves any notable use of
document.querySelector(...)
todisplayElement.querySelector(...)
. this is done in order to rollback the setup file for clearing the DOM after each step, which is necessary as Jest doesn't automatically do that between individual tests in a testing file. now instead of having to potentially deal with multiple jsPsych elements with unintended side effects, each tests will for sure act in their owndisplayElement
. (closes #3434)