Grade-scala

Grading environment with specific Scala version in path.

This image extends grade-java.

The base layer has Scala 3.4 and Java 11 installed.

Images are tagged with Scala and grading-base versions in the format <scala>-<grading-base>. Version tag can also include uN meaning update N where N is an increasing number. The update part is used to indicate updates to the image, where software versions did not change. For an example, 3.1-4.2u1 includes Scala 3.1 on top of grading-base 4.2 and has one update after the first release.

There are additional versions of the image:

• python-* includes Python3

This image provides following convenience utilities.

• scala-compile [-M] [-m ok_message] [files/dirs..]

  Passes files/dirs to move-to-package-dirs and then executes scalac with all matched files. If files/dirs is empty (no argument), then all *.scala files in the working tree are moved and compiled.

  You can control classpath via CLASSPATH environment variable. You can define options for scalac using SCALACFLAGS environment variable. Default options are -encoding utf-8 -deprecation -feature -language:postfixOps.

  If compilation is successfull, then ok_message is printed. By default, it is ok, but it can be suppressed with -M.

• scalatest [-r runner] [files..]

  Executes scala using runner as the class and files as arguments. Default runner is org.scalatest.tools.Runner. For this runner, script passes arguments -R . -eW and for single argument -s argument. To search from module, use -- -m module.

• run-all-scalatests [-C] [-p points_per_test_class]

  Command to do it all. Can replace run.sh in trivial cases.

  First, script compiles all *.scala files from the current tree and /exercise, unless -C is provided. If compilation fails, then no tests are run. Second, script finds all files matching *Test*.scala pattern from the current tree. Then, it runs all files that contain string org.scalatest. using testcase and scalatest. Testcase will give points_per_test_class many points per successful execution of scalatest.