Unit tests allow us to verify that individual parts of our codebase function as expected on their own, ensuring the reliability of our NestJS application.
NestJS is configured to handle tests using the Jest framework out of the box, allowing us to ensure that components work correctly by verifying test patterns.
We can avoid failures in our tests due to database issues by avoiding a real database connection, ensuring our unit tests are independent and reliable.
In testing, it's vital to adjust mocks appropriately to handle various scenarios effectively. This ensures that our tests comprehensively cover different outputs the method can yield.
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