Comparisons

Unit vs Integration vs E2E: The Testing Pyramid

Venn Diagrams · made in Skemio

Venn diagram comparing Unit Tests, Integration Tests, and E2E Tests, showing overlaps such as Component Testing, API Contract Tests, and Full Coverage.
Venn diagram comparing Unit Tests, Integration Tests, and E2E Tests, showing overlaps such as Component Testing, API Contract Tests, and Full Coverage.
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What it shows

  • Unit tests isolate deterministic logic with millisecond execution times.
  • Integration tests verify database connections, queues, and API contracts.
  • E2E tests validate complete user journeys across real browser environments.

The takeaway

Balance your suite: unit tests give speed, integration tests protect boundaries, E2E proves user flow.

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