Simple console version of a drawing program, with the following features:

• draw lines and rectangles
• fill them with colours

Assumptions:

• Bucket fill extends to adjacent "pixels" with the same colour horizontally and verticall, but not diagonally
• The "colour" x used for lines is treated exactly like all other colours, so a bucket fill with colour x followed by another with another colour will clear adjacent lines too

Main commands:

• run the build with gradlew build
• generate the binaries with gradlew assemble, you will find them in subdirectory commandline-app/build/distributions
• run the unit tests with gradlew test
• generate the test coverage reports with gradlew test jacoco
• for other build commands, check the gradle documentation

Known issues

• the application does not work when running from gradle directly via gradlew run because the Console object is null. See https://issues.gradle.org/browse/GRADLE-2386
• error handling is very poor, especially on the command line side. Needs refactoring
• unit tests only cover successful scenarios, and do not cover either failing scenarios, bad arguments or tricky scenarios. For a list of useful tests to cover, see the test classes
• javadoc coverage could be improved
• no command line integration tests have been configured
• no logging has been configured (although the required libraries have been included in the build)
• current release version of cglib does not support java 8, so the build includes a snapshot version instead