Coding & Debugging
PromptBeginner5 minmarkdown
- **Missing assertions**: Tests that execute code but never assert on outcomes
giving false confidence.
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Coding & Debugging
PromptBeginner5 minmarkdown
- **Hardcoded test data**: Using magic strings and numbers without factories
builders
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Coding & Debugging
PromptBeginner5 minmarkdown
- **Slow test suites**: Not optimizing execution time
leading to developers skipping tests or ignoring CI results.
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Coding & Debugging
PromptBeginner5 minmarkdown
- **Over-mocking**: Mocking so many dependencies that the test validates the mocks
not the actual code.
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General
PromptBeginner5 minmarkdown
- **No edge case coverage**: Only testing the happy path and ignoring boundaries
nulls
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General
PromptBeginner5 minmarkdown
- **Testing implementation details**: Asserting on internal state
private methods
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General
PromptBeginner5 minmarkdown
- Apply markers to categorize tests (slow
integration
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General
PromptBeginner5 minmarkdown
- Use AssertJ for fluent
readable assertions.
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General
PromptBeginner5 minmarkdown
- Query elements by accessible roles and text
not implementation selectors.
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General
PromptBeginner5 minmarkdown
- Use fixtures with appropriate scopes (function
class
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General
PromptBeginner5 minmarkdown
- Handle flaky tests with proper waits and retries
never `cy.wait(ms)`.
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General
PromptBeginner5 minmarkdown
- Configure test environments (jsdom
node) appropriately per test suite.
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General
PromptBeginner5 minmarkdown
- Mock external services at the boundary
not internal implementation details.
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General
PromptBeginner5 minmarkdown
- Follow the test pyramid: many unit tests
fewer integration tests
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Data
PromptBeginner5 minmarkdown
- Log relevant context (input data
state) on failure for faster diagnosis.
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General
PromptBeginner5 minmarkdown
- [ ] All tests follow AAA pattern with clear arrange
act
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Coding & Debugging
PromptBeginner5 minmarkdown
- [ ] Test data is generated via factories or builders
not hardcoded.
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General
PromptBeginner5 minmarkdown
- [ ] Edge cases
boundary values
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General
PromptBeginner5 minmarkdown
- Replace non-deterministic elements (time
randomness) with controlled values.
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General
PromptBeginner5 minmarkdown
- Track line
branch
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General
PromptBeginner5 minmarkdown
After writing or updating tests
verify:
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General
PromptBeginner5 minmarkdown
- Handle asynchronous operations with proper waits and retries
not arbitrary sleeps.
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Data
PromptBeginner5 minmarkdown
- Manage test data lifecycle to ensure isolated
repeatable scenarios.
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General
PromptBeginner5 minmarkdown
- Monitor resource consumption (CPU
memory
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