Merge pull request #15 from praqma-training/wrapper_kata

add gradle-wrapper-basics kata

README.md

@@ -46,6 +46,9 @@ Feel free to use these exercises, that's why they're public!
 
 ## Suggested Learning Path
 
+Setup
+ - [gradle-wrapper-basics](./gradle-wrapper-basics/README.md) - Use the gradle wrapper to ensure that the correct gradle version is used.
+
 Task creation
  - [task-creation](./task-creation/README.md) - Add a simple task and execute it
  - [build-phases](./build-phases/README.md) - Creating dependent tasks and ordered execution

gradle-wrapper-basics/README.md

@@ -0,0 +1,28 @@
+# Gradle Kata: Gradle Wrapper
+
+While you can use Gradle directly to run your build, the setup process is toilsome and having all your developers use the same version is a pain. The Gradle Wrapper script deals with these problems for you, and is the recommended way to use Gradle.
+
+## Setup
+
+Run `. setup.sh`
+
+Then enter the `exercises` directory.
+
+## The task
+The `exercises` directory is the root of your new project, where you want to use Gradle to build it.
+
+1. Run `gradlew wrapper`
+1. Examine the generated files. The following files and folders have been created:
+   * .gradle/
+   * gradle/
+   * gradlew
+   * gradlew.bat
+1. Run `gradlew --version` and verify that the version is the same as when running  `gradle --version`
+1. Run `./gradlew wrapper --gradle-version 5.6.4` to update the version used by the gradle wrapper
+1. Run `gradlew --version` again
+1. Run `gradle --version` again
+
+## Useful commands
+* `gradle wrapper`
+* `gradle wrapper --gradle-version x.y.z`
+* `gradle --version` and `gradlew --version`

gradle-wrapper-basics/setup.sh

@@ -0,0 +1,12 @@
+echo "[KATA] Setting up the kata"
+echo "[KATA] ------"
+echo "[KATA] "
+
+echo "[KATA] Cleaning up old exercise"
+rm -rf exercise/
+
+echo "[KATA] Initializing new exercise"
+mkdir exercise
+cd exercise
+
+echo "[KATA] Done!"