Andreas Svanberg asvanberg
runarorama
/ gist:a8fab38e473fafa0921d
Last active
April 13, 2021 22:28
Compositional application architecture with reasonably priced monads
This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| sealed trait Interact[A] | |
| case class Ask(prompt: String) | |
| extends Interact[String] | |
| case class Tell(msg: String) | |
| extends Interact[Unit] | |
| trait Monad[M[_]] { | |
| def pure[A](a: A): M[A] |
anonymous
/ scala_validation.scala
Created
June 19, 2015 21:19
This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| import scalaz._, Scalaz._ | |
| object ErrorHandlingExample { | |
| type PartNumber = String | |
| sealed trait CpuType | |
| case object Intel extends CpuType | |
| case object Qualcomm extends CpuType | |
| case class PhoneSpec( |
asvanberg
/ SomeTest.java
Created
September 7, 2024 21:44
Solving the problem of emptying the database between each test when using Spring Boot and Testcontainers
This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| /* | |
| This showcases how to use a Testcontainers provided database to test a Spring | |
| Boot application while isolating every test so that changes to the database | |
| does not interfere with other tests. | |
| It accomplishes this without any reliance on implementation details to empty | |
| out specific tables or anything else. There is no global "rollback only" | |
| transaction semantics. You can run assertions against the actual data in the | |
| database if desired, including any schema changes. |