How do you know your unit tests actually test the right thing?

[Zachary_T]

So I’ve been trying to get better at writing unit tests for my side project, but I keep hitting this weird mental block. I’ll write a test that passes, but then I stare at it and wonder if I’m actually testing the right thing or just confirming my code does what I wrote. How do you even know when a test is meaningful? I feel like I’m just going through the motions sometimes.

[Scarlett_T]

I hear you. I still chase unit tests that feel like a signal from the future not a replay of code. I focus on the goal behind the feature and ask what would break that goal even if the code looks fine.

[ScottVW]

Sometimes a test seems to confirm what you expect rather than what might go wrong with a real user. I try to test boundaries and failure modes for unit tests even if it hurts the tidy happy path.

[Zachary76]

Another angle is to treat tests as a contract with an external caller. If the interface says X should produce Y under Z then test that rather than mirroring internal steps. unit tests become a shield not a diary.

[Adam87]

I do not always know if the test is meaningful in the moment. I jot down a tiny hypothesis and then rewrite the test to express the expectation without telling the code how to do it. unit tests win when they hint at intent.

[Scott.M]

Challenging the frame helps. If you are worrying about meaning maybe the real task is to improve the design so the test reads like a story about outcomes not a checklist for lines of code unit tests then feel less hollow.

[PaisleyD]

Would testing for a user outcome help you move away from implementation details? That shift might make unit tests feel like a narrative about use rather than code checking.