Structuring Tests
Jest offers describe function to help structure your tests. Use describe to group together all tests that belong to one functionality. Describes can be nested, if you need that. Other functions you'll commonly use are beforeEach or beforeAll that you can use for setting up the objects you're testing.
If your test has many steps or many expectations, you probably want to split it into multiple smaller ones. Also, ensure that your tests are completely independent of one another. Each test in your suite must be executable on its own without first running some other test.
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