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Pairing Induction Exercise

Quick Start

Tests can be executed in the terminal, from the root folder of the project:

sbt test

You can also run the tests automatically every time there are changes in the filesystem:

  1. Go into an sbt terminal
sbt
  1. Inside the sbt terminal
~test

Or you can use your IDE to run the tests

Requirements

  • Java JDK 8+

With SDKMAN (Recommended - see below how to install SDKMAN):

sdk install java

Or with Homebrew:

brew tap caskroom/versions
brew cask install java8
  • SBT (Scala Build Tool)

With SDKMAN (Recommended):

sdk install sbt

Or with Homebrew:

brew install sbt@1

Optional

  • SDKMAN

This is a tool that helps managing the installation and management of different versions of the binaries for different languages, build tools, etc. around the JVM.

The installation instructions can be found at https://sdkman.io/install

With this tool, you can install java, scala and sbt, also with multiple versions at the same time, and activate different versions easily. For example:

Java Examples:

sdk list java
sdk install java
sdk install java 8.0.201-zulu
sdk install java 11.0.2-zulu
sdk use java 8.0.201-zulu
sdk use java 11.0.2-zulu

Scala Examples:

sdk list scala
sdk install scala
sdk install scala 2.12.8
sdk install scala 2.11.10
sdk use scala 2.12.8
sdk use scala 2.11.10

For a full list of all the tools that can be managed with SDKMAN:

sdk list
  • Scala

SBT already manages Scala libraries for you, but in case you want to install in your computer the libraries anyways, which allows you to invoke a REPL to fool around with scala, you can install it:

With SDKMAN:

sdk install scala

Or with Homebrew:

brew install scala
  • IntelliJ Scala plugin

If you are using IntelliJ as IDE, there is a Scala plugin available which provides Scala and SBT integration within the IDE and it is strongly recommended to install to work with Scala based projects.

Open the Preferences (Cmd + ,), go to the Plugins pane, search for Scala, install it and restart the IDE.