Specmatic Updates – Page 3

JDBC stubbing with Redis and Specmatic contract testing.

Break the Chains of Database Dependencies: Leveraging Specmatic for JDBC Stubbing

Demonstration, Feature Spotlight, Updates / By Hari Krishnan / Contract Driven Development, Contract Testing, JDBC, Stubbing

With Specmatic JDBC stub, you can easily test APIs without the need for a complex database setup. By switching out the real database with a Specmatic JDBC stub, we can set expectations for the stub to respond to specific queries. These expectations can be recorded based on actual interactions. Once the expectations are set, we no longer need the database for our tests!

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JMS Mocking with AsyncAPI using Specmatic

Demonstration, Feature Spotlight, Updates / By Jaydeep Kulkarni / AsyncAPI, Contract Driven Development, Contract Testing, Database Stubbing, Demonstration, JMS

The JMS mock is wire compatible and can be controlled entirely from within the test. This means you can run the test locally or also as part of your continuous integration build to provide quick feedback early in the cycle.

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Kafka Mocking with AsyncAPI using Specmatic

Demonstration, Feature Spotlight, Updates / By Joel Rosario / AsyncAPI, Kafka

The Specmatic Kafka mock is wire compatible and entirely within the control of the test, the test can run locally and in CI and deliver quick feedback early in the cycle. So the application itself runs exactly as it would with a real Kafka.

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Redis stubing - specmatic contact development with contract testing.

Redis Stubbing with Specmatic Contract Testing

Demonstration, Feature Spotlight, Updates / By Joel Rosario / Redis, Stubbing

Instead of using an actual instance of Redis, we’ll stub it out and have the contract test set expectations so that the Redis stub knows what data to return for any query sent to it by the application. Now, when we run the contract tests and the service object does a look up in Redis, it’s actually hitting the Redis stub.

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Dave Farley pointing to the Specmatic tool for easy microservice testing, featured on Dave Farley's Continuous Delivery channel.

“Easy Microservice Testing” – Specmatic featured on Continuous Delivery channel

In the Media, Updates / By John / Continuous Delivery, Contract Testing, microservices

Dave Farley is a respected author and widely recognised proponent of Continuous Delivery. In this video on his Continuous Delivery YouTube channel he discusses why Contract Testing is important for microservices.

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Comparison of Specmatic and Spring Cloud Contract.

Comparison: Specmatic vs Spring Cloud Contract

Comparisons, Updates / By Hari Krishnan / Consumer Driven Contract, Contract Driven Development, Contract Testing, Integration Testing, microservices, OpenAPI, Provider Driven Contract, Specmatic, Spring Cloud Contract

With Spring Cloud Contract we can start by authoring the API contract in one of the supported DSLs, based on which the provider / producer is verified and in the process stubs are generated for consumers. This makes it possible to leverage it as both a “consumer driven” or “provider driven” contract testing tool. There are also some interesting points about how we share contracts and stubs (through artifact managers, source control, etc.) with Spring Cloud Contract. Let us look at the detailed comparison between Specmatic and Spring Cloud Contract. Please do leave a comment if there are other areas of comparison on which you would like to see additional details.

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Comparison: Specmatic vs WireMock

Comparisons, Updates / By Hari Krishnan / api mocking, Contract Driven Development, Contract Testing, OpenAPI, Specmatic, wiremock

API mocking is only effective if the mocks are truly representative of the provider / services they are emulating. Deviations between mocks and providers can lead to integration issues much later in the development cycle. In order to avoid such issues it is important to keep in mind that selecting an API mocking tool is not an isolated decision. It has to be in line with your overall microservices development, testing and deployment goals.

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Comparison: Specmatic vs Pact.io and Pactflow.io

Comparisons, Updates / By Hari Krishnan / BDCT, Bi-Directional Contract Testing, CDCT, CDD, Consumer Driven Contract Testing, Contract Driven Development, Contract Testing, Integration Testing, OpenAPI, pact, Pactflow, Specmatic

Specmatic and Contract Driven Development differ significantly from Pact. We built Specmatic out of our own necessity where Pact did not fit the bill for us. We have tried to cover as many areas of comparison as possible, however we would love to hear if you have any other criteria on which you would like to see additional details.

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