Grading environment with specific Java version in path.

This image extends grading-base. In addition, following convenience scripts are provided in path.

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

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

  You can control classpath via CLASSPATH environment variable. You can define options for javac using JAVACFLAGS environment variable. Default options are -encoding utf-8 -deprecation.

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

• move-to-package-dirs [-v] [-d delim] [-f filter] [files/dirs..]

  Reads package and package object (scala) directives from files and moves files to correct locations. For example, a file 'example.javacontainingpackage foo.bar;is moved tofoo/bar/example.java. All directories are recursively seached and all files that match filter` pattern are handled.

  If no files or directories are specified, then current tree is searched for files matching filters *.java and *.scala.

  The utility prints final paths of all processed files. By default, paths are separated by space, but you can change this with -d (e.g. newlines with -d '\n' or nulls with -d '\0'). This can be used to pass files for javac for example (e.g. javac $(move-to-package-dirs)).

  In case of readonly files (e.g. /exercise mount), files are copied instead.

  The argument -v ands verbose flag for mv and cp commands with output redirected to stderr.

• junit [-r runner] [files..]

  Executes java using runner as the class, files as arguments and filters output with filter-junit-stack. Default runner is org.junit.runner.JUnitCore. To run test stuite or custom main, use something like junit -r MyTests or filter-junit-stack java MyTests.

• filter-junit-stack CMD..

  Executes CMD and removes all lines starting with \tat from stdout and stderr. For example, junit prints stack traces in this format.

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

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

  First, script compiles all *.java 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*.java pattern from the current tree. Then, it runs all files that contain string org.junit.Test using testcase and junit. Testcase will give points_per_test_class many points per successful execution of junit.