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Pacto judges the contracts between consumers and providers of RESTful services. It can aid in designing realistic test doubles, by ensuring the double complies with the same contract as the real service. It can also aid with service evolution patterns, like Consumer-Driven Contracts or Documentation-Driven Contracts. Pacto ensures consumers meet their contractual obligations: Send the required HTTP request headers Send an appropriate request body (when required) Pacto also ensures providers meet their contractual obligations: Send an appropriate response code Send the required HTTP response headers Send an appropriate response body Pacto can also ensure the provider and consumer collaborate appropriately. It can ensure that for a given scenario: The consumer calls the expected service(s) with a valid request The provider sends a valid response No unexpected services were called

Consumers Pacto helps you test consumers by both validating and stubbing services. This helps you decouple tests to reduce test times and non-deterministic test failures without losing confidence in your test suite. You can also design compatibility tests for similar consumers. Providers You can use Consumer-Driven Contracts to ensure you're providers are well tested without losing agility. Pacto will test the provider implementation and make sure it complies with the same contract used to stub the service for consumers.

"Enables consumer driven contract testing, providing a mock service and DSL for the consumer project, and interaction playback and verification for the service provider project."

"Pacto settles disputes between JSON providers and consumers"

"Introduction In the modern era, software is commonly delivered as a service: called web apps, or software-as-a-service. The twelve-factor app is a methodology for building software-as-a-service apps that: Use declarative formats for setup automation, to minimize time and cost for new developers joining the project; Have a clean contract with the underlying operating system, offering maximum portability between execution environments; Are suitable for deployment on modern cloud platforms, obviating the need for servers and systems administration; Minimize divergence between development and production, enabling continuous deployment for maximum agility; And can scale up without significant changes to tooling, architecture, or development practices. The twelve-factor methodology can be applied to apps written in any programming language, and which use any combination of backing services (database, queue, memory cache, etc). Background The contributors to this document have been directly involved in the development and deployment of hundreds of apps, and indirectly witnessed the development, operation, and scaling of hundreds of thousands of apps via our work on the Heroku platform. This document synthesizes all of our experience and observations on a wide variety of software-as-a-service apps in the wild. It is a triangulation on ideal practices for app development, paying particular attention to the dynamics of the organic growth of an app over time, the dynamics of collaboration between developers working on the app's codebase, and avoiding the cost of software erosion. Our motivation is to raise awareness of some systemic problems we've seen in modern application development, to provide a shared vocabulary for discussing those problems, and to offer a set of broad conceptual solutions to those problems with accompanying terminology. The format is inspired by Martin Fowler's books Patterns of Enterprise Application Architecture and Refactoring. Who should

Bueno. Eso. Compartí el que me di cuenta que puso antes Pablo en vez del original por error, pero la idea entre ambos, si la obviedad es tolerable, es idéntica :) Está muy bien estructurado en cuanto que cada factor depende de los demás a la vez que los promueve. Permite un enfoque general que incluye prácticas de arquitectura - y de armado cotidiano de productos - que posibilitan llegar donde yo entiendo - según me voy enterando - que es el lugar a donde llegar. Sin embargo, creo que ni éste departamento en sus sistemas más nuevos cumple todos y cada uno de aquellos factores. Esto, lejos de ser una crítica, es una invitación para que revisemos si es el único método posible - cosa improbabilísima - o el mejor método - también bastante improblable - a seguir. Lo que sí sostengo como un absoluto - quien no lo haría - es que es un método practicable. Mi aporte mínimo es defenderlo como uno bueno.