Describe grouping

beforeEach setup

Dependency mocking

Success path test

Error path test

Empty/null handling

Boundary value test

Concurrent operations

AAA structure

Descriptive test names

Single behavior per test

Test data factory

Test independence

Coverage thresholds

Timing measurement

1000-item benchmark

100ms threshold

Heap memory capture

50MB memory threshold

SQL injection payload

Data integrity after injection

XSS payload

Script tag absence

JSDoc @test tag

JSDoc @description tag

JSDoc @steps tag

JSDoc @expected tag

beforeAll setup

afterAll teardown

POST status 201

GET retrieval test

Response body assertions

Statements coverage ≥80%

Branches coverage ≥75%

Functions coverage ≥80%

Lines coverage ≥80%

Test independence

Error response test