#!/bin/sh
#
# Given a list of files on stdin, translates them into a set
# of tests covering those files. That means paths which aren't
# part of a test are dropped and the rest are rewritten to the
# primary test path, with duplicates dropped.

cd "$(dirname "$0")/.."

# We have to enumerate good test dirs since partest chokes and fails
# on continuations, bench, etc. tests
pathRegex="test/files/(pos|neg|jvm|run|scalap|presentation)/[^/.]+([.]scala)?\$"

# Echo the argument only if it matches our idea of a test and exists.
isPath () { [[ "$1" =~ $pathRegex ]] && [[ -e "$1" ]]; }

# Filter stdin down to actual test paths.
asTestPaths() {
  while read -r p; do
    # Matched file at the standard test depth
    p1="${p%.*}" && isPath "$p1.scala" && echo "$p1.scala" && continue
    # Or, matched file may be in a test subdirectory, so strip the last path segment and check
    p2="${p1%/*}" && isPath "$p2" && echo "$p2" && continue
  done
}

asTestPaths | sort -u