Praspel Laravel Package

Product Decisions This Supports

• Test strategy: example-based vs. property-based. Praspel is a Design-by-Contract DSL for PHP (@requires, @ensures, @invariant, @throwable) paired with a generative data engine (Hoa\Realdom) that produces inputs satisfying the declared preconditions. It is the clearest prior art for "specify the contract, generate the cases" in the PHP ecosystem — useful evidence when deciding whether to fund property-based testing beyond hand-written unit tests.
• Build vs. buy for contract enforcement. Because the repo is archived (last release 2017), zero dependents, and effectively a one-off research artifact, the honest framing is buy → build: the realistic options are a thin internal contract layer, or standing on maintained tooling (Eris for generative tests, PHPStan/Psalm assertion types for static contracts, Symfony Validator for runtime input validation). Praspel contributes the design vocabulary, not the runtime.
• Where contracts pay off in the roadmap. Highest-value targets are small-surface, high-risk components: money/currency value objects, order and inventory state machines, pricing rule engines, and public SDK boundaries where callers pass untrusted data. Low value on thin CRUD controllers and glue code.
• Quality-gate design. Informs whether the org's quality gate should be "coverage %", "static analysis level", or "declared invariants hold under generated inputs" — three materially different investment profiles with different ongoing costs.
• Upgrade risk decisions. A concrete data point for the PHP 8/9 modernization argument: an unmaintained 2017-era package encoding parser-level assumptions is a liability, not an asset. Reinforces a standing "no abandoned dependencies" policy.

When to Consider This Package

Consider (narrowly) when:

• You are doing an internal research spike or architecture evaluation and want a working reference implementation of a contract DSL plus generative test data — reading the source is the value, not composer require.
• You own a legacy PHP 5.x/7.0-era codebase pinned to that runtime, with in-house engineers comfortable in parser/AST internals and willing to fork and maintain.
• You need to justify, with evidence, an investment in property-based testing — a short spike de-risks the "is this even useful for our domain?" question before committing engineering quarters.

Look elsewhere when:

• Target runtime is PHP 8.x+. The package predates it, is archived, has no maintainers, no dependents, and no compatibility path — treat it as incompatible until proven otherwise.
• You need vendor support, security patching, or an SLA (regulated, enterprise, or customer-facing surface).
• The team lacks deep PHP metaprogramming skills; the DSL's ergonomics assume fluency the language no longer rewards.
• Your actual need is input validation or type safety, not behavioral specification — Symfony Validator, PHPStan/Psalm, and native typed properties solve those with maintenance and community behind them.
• You want generative testing without the contract overhead: Eris is the maintained, community-backed choice.

How to Pitch It (Stakeholders)

For executives (one paragraph). Praspel is an abandoned 2017 research library that lets PHP developers declare formal contracts on their code and auto-generate test inputs from them. We are not recommending adoption — it is archived, has zero downstream users, and will not run on current PHP. Its value is as a cheap blueprint: a one-to-two day engineering spike tells us whether contract-driven and generative testing meaningfully reduce defects in our highest-risk domain logic, and lets us build that capability on maintained tooling instead of inheriting an unmaintained dependency. Cost: negligible. Downside risk: contained to the spike.

For engineering leadership. Recommendation is a time-boxed spike, not a platform bet. Success criteria: (1) a reproducible generative test catches at least one real edge case in a target module (pricing, money, or order state), and (2) a written go/no-go on a thin internal contract layer versus adopting Eris + static analysis. Explicit non-goal: adding hoa/praspel to composer.json.

For the engineering team. Steal the ideas, not the dependency. Read the contract grammar and the precondition-to-data-generation mapping; then implement the minimal subset that earns its keep — asserted invariants on value objects, plus generative tests for the two or three modules where a wrong answer is expensive. Everything else stays PHPUnit.