Tests Are Sometimes Wrong

When investigating a test failure, look at both the code and the test.

• Sometimes the code is correct and the test is wrong.

• Remember, tests are just more code and subject to their own bugs.

• There are ways around this, though

There's a fine line of trusting your testing code.

• Too much trust, and you'll be chasing phantoms.

• Too little trust, and you'll be changing your tests to cover up bugs.

It's important to understand why a test failed

• Then you can determine if it's a real failure or a test bug

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