Test Utilities Laravel Package

Product Decisions This Supports

• Accelerating CQRS/Event Sourcing Adoption: Enables rapid testing of event-driven architectures by reducing boilerplate for event/aggregate testing, lowering the barrier to entry for teams evaluating or migrating to EventSauce.
• Developer Productivity: Supports a "build vs. buy" decision by providing pre-built utilities (e.g., test doubles, event replay tools) to avoid reinventing testing infrastructure for event-sourced systems.
• Quality Assurance for Event-Driven Features: Critical for roadmap items involving complex domain events, sagas, or audit trails where testing edge cases (e.g., event replay, projection validation) is non-trivial.
• Onboarding New Teams: Reduces ramp-up time for engineers unfamiliar with EventSauce by standardizing test patterns (e.g., EventSauceTestCase, EventReplayer).
• Compliance/Regulatory Use Cases: Facilitates testing of immutable event histories (e.g., financial audits, healthcare compliance) where event integrity is paramount.

When to Consider This Package

• Adopt if:

  • Your team is using EventSauce v2/v3 and needs to test event-sourced aggregates, projections, or sagas.
  • You prioritize developer velocity over custom test solutions (e.g., avoiding manual event replay logic).
  • Your project requires reproducible event history testing (e.g., validating projections against known event sequences).
  • You’re evaluating EventSauce and need proof-of-concept test utilities to assess fit.

• Look elsewhere if:

  • Your stack uses non-EventSauce event stores (e.g., Axon, EventStoreDB native tools).
  • You need advanced mocking (e.g., for external services) beyond event replay—consider PHPUnit mocks or Mockery.
  • Your team prefers custom testing frameworks (e.g., Pest PHP) over EventSauce-specific utilities.
  • You’re not using PHPUnit (package requires v8.5+).
  • Your events are trivial (no need for replay/validation testing).

How to Pitch It (Stakeholders)

For Executives: "This package cuts testing time for our event-driven features by 30–50% by automating repetitive tasks like event replay and aggregate validation. For example, validating a complex order saga—previously requiring 2+ hours of manual test setup—now takes minutes. It’s a low-risk way to accelerate development of audit-compliant or high-reliability systems while keeping our PHP stack lean."

For Engineering: *"EventSauce’s test utilities give us:

• EventReplayer: Instantly replay events to test projections without manual setup.
• EventSauceTestCase: Pre-configured PHPUnit base class for aggregate/saga tests.
• Zero boilerplate: No need to write custom event replay logic or handle edge cases like event versioning. It’s MIT-licensed, actively maintained (by EventSauce’s core team), and integrates seamlessly with our existing PHPUnit workflow. Let’s use it to ship event-driven features faster and with fewer bugs."*

For Architects: *"This aligns with our CQRS/Event Sourcing strategy by providing standardized testing patterns. It’s particularly valuable for:

• Projection validation: Ensure read models stay in sync with event streams.
• Temporal testing: Verify sagas handle retries, failures, and out-of-order events.
• Compliance: Automate tests for immutable event histories (e.g., ‘prove this order event was never altered’). The package’s dependency on EventSauce v2/3 ensures we’re not locking into unstable tooling."*