PromptVaultLearn to place mocks at real system boundaries
For developers learning why mocking the wrong call makes tests brittle or misleading.
Works with
- Codex
- GitHub Copilot
The prompt148 words · 2 blanks
What you fill in
- Code and current test
[code_and_test]ExampleOrder service, payment client interface, and a test that mocks three internal helpers - Testing familiarity
[learning_level]ExampleComfortable with assertions, new to mocks
How to use it
- 1Open it in PromptVault. Find it in Coding, or search for “Learn to place mocks at real system boundaries”.
- 2Fill in the 2 blanks. code and current test and testing familiarity — the only things the prompt cannot know.
- 3Copy and paste it into GitHub Copilot. It also works with Codex.
About this prompt
“Learn to place mocks at real system boundaries” is a beginner coding prompt. For developers learning why mocking the wrong call makes tests brittle or misleading. It is 148 words long and written to get a usable answer on the first message, in Codex and GitHub Copilot or any other chat assistant. Good for: testing, beginner friendly, explainer and deep dive. Like every prompt in PromptVault, it was written and edited in-house, and it works offline once the app is installed.
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