File: partest

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#!/usr/bin/env bash
#
##############################################################################
# Scala test runner 2.10.0
##############################################################################
# (c) 2002-2013 LAMP/EPFL
#
# This is free software; see the distribution for copying conditions.
# There is NO warranty; not even for MERCHANTABILITY or FITNESS FOR A
# PARTICULAR PURPOSE.
##############################################################################

findScalaHome () {
  # see SI-2092 and SI-5792
  local source="${BASH_SOURCE[0]}"
  while [ -h "$source" ] ; do
    local linked="$(readlink "$source")"
    local dir="$( cd -P $(dirname "$source") && cd -P $(dirname "$linked") && pwd )"
    source="$dir/$(basename "$linked")"
  done
  ( ( cd -P "$(dirname "$source")/.." > /dev/null ) && pwd )
}

# Use tput to detect color-capable terminal.
# (note: I have found that on Cygwin, the script sometimes dies here.
# it doesn't happen from the Cygwin prompt when ssh'ing in to
# jenkins-worker-windows-publish, only when I make a Jenkins job
# that runs this script.  I don't know why.  it may have to do with
# which bash flags are set (-e? -x?) and with bash flags propagating
# from one script to another? not sure. anyway, normally in a CI
# context we run partest through ant, not through this script, so I'm
# not investigating further for now.)
term_colors=$(tput colors 2>/dev/null)
if [[ $? == 0 ]] && [[ $term_colors -gt 2 ]]; then
  git_diff_options="--color=always --word-diff"
  color_opts="-Dpartest.colors=$term_colors"
else
  unset color_opts
  git_diff_options="--nocolor"
fi

cygwin=false;
darwin=false;
case "`uname`" in
    CYGWIN*) cygwin=true ;;
    Darwin*) darwin=true ;;
esac

# Finding the root folder for this Scala distribution
SCALA_HOME="$(findScalaHome)"

if $cygwin; then
    SCALA_HOME=`cygpath --windows --short-name "$SCALA_HOME"`
    SCALA_HOME=`cygpath --unix "$SCALA_HOME"`
fi

# Let ant construct the classpath used to run partest (downloading partest from maven if necessary)
# PARTEST_CLASSPATH=""
if [ -z "$PARTEST_CLASSPATH" ] ; then
    if [ ! -f "$SCALA_HOME/build/pack/partest.properties" ] ; then
        (cd "$SCALA_HOME" && ant -q test.suite.init) # builds pack, downloads partest and writes classpath to build/pack/partest.properties
    fi

    PARTEST_CLASSPATH=$( cat "$SCALA_HOME/build/pack/partest.properties" | grep partest.classpath | sed -e 's/\\:/:/g' | cut -f2- -d= )

    # sanity check, disabled to save time
    # $( javap -classpath $PARTEST_CLASSPATH scala.tools.partest.nest.NestRunner &> /dev/null ) || unset PARTEST_CLASSPATH
fi

# if [ -z "$PARTEST_CLASSPATH" ] ; then
#     if [ -f "$SCALA_HOME/lib/scala-partest.jar" ] ; then
#         for ext in "$SCALA_HOME"/lib/* ; do
#             if [ -z "$PARTEST_CLASSPATH" ] ; then
#                 PARTEST_CLASSPATH="$ext"
#             else
#                 PARTEST_CLASSPATH="$PARTEST_CLASSPATH:$ext"
#             fi
#         done
#     elif [ -f "$SCALA_HOME/build/pack/lib/scala-partest.jar" ] ; then
#         for lib in `echo "scala-partest scala-library scala-parser-combinators scala-xml scala-reflect scala-compiler diffutils"`; do
#             ext="$SCALA_HOME/build/pack/lib/$lib.jar"
#             if [ -z "$PARTEST_CLASSPATH" ] ; then
#                 PARTEST_CLASSPATH="$ext"
#             else
#                 PARTEST_CLASSPATH="$PARTEST_CLASSPATH:$ext"
#             fi
#         done
#     fi
# fi

# Locate a javac command
# Try: JAVA_HOME, sibling to specific JAVACMD, or PATH
# Don't fail if there is no javac, since not all tests require it.
if [ -z "$JAVAC_CMD" ] ; then
    if [ -n "${JAVA_HOME}" ] && [ -f "${JAVA_HOME}/bin/javac" ] ; then
        JAVAC_CMD="${JAVA_HOME}/bin/javac"
    fi
    if [ -z "$JAVAC_CMD" ] && [ -n "$JAVACMD" ] ; then
        JDIR=`dirname "${JAVACMD}"`
        JAVAC_CMD="${JDIR}/javac"
    fi
    if [ -z "$JAVAC_CMD" ] ; then
        JAVAC_CMD=`type -p javac`
    fi
fi

if $cygwin; then
    if [ "$OS" = "Windows_NT" ] && cygpath -m .>/dev/null 2>/dev/null ; then
        format=mixed
    else
        format=windows
    fi
    if [ -n "${JAVA_HOME}" ] ; then
        JAVA_HOME=`cygpath --$format "$JAVA_HOME"`
    fi
    if [ -n "${JAVACMD}" ] ; then
        JAVACMD=`cygpath --$format "$JAVACMD"`
    fi
    if [ -n "${JAVAC_CMD}" ] ; then
        JAVAC_CMD=`cygpath --$format "$JAVAC_CMD"`
    fi
    SCALA_HOME=`cygpath --$format "$SCALA_HOME"`
fi

# last arg wins, so if JAVA_OPTS already contains -Xmx or -Xms the
# supplied argument will be used.
# At this writing it is reported test/partest --all requires 108m permgen.
JAVA_OPTS="-Xmx1024M -Xms64M -XX:MaxPermSize=128M $JAVA_OPTS"

# the ant task doesn't supply any options by default,
# so don't do that here either -- note that you may want to pass -optimise
# to mimic what happens during nightlies.
# [ -n "$SCALAC_OPTS" ] || SCALAC_OPTS="-deprecation"

partestDebugStr=""
if [ ! -z "${PARTEST_DEBUG}" ] ; then
  partestDebugStr="-Dpartest.debug=${PARTEST_DEBUG}"
fi

# note that variables which may intentionally be empty must not
# be quoted: otherwise an empty string will appear as a command line
# argument, and java will think that is the program to run.
"${JAVACMD:=java}" \
  $JAVA_OPTS -cp "$PARTEST_CLASSPATH" \
  ${partestDebugStr} \
  ${color_opts} \
  -Dfile.encoding=UTF-8 \
  -Dscala.home="${SCALA_HOME}" \
  -Dpartest.javacmd="${JAVACMD}" \
  -Dpartest.java_opts="${JAVA_OPTS}" \
  -Dpartest.scalac_opts="${SCALAC_OPTS}" \
  -Dpartest.javac_cmd="${JAVAC_CMD}" \
  scala.tools.partest.nest.ConsoleRunner "$@"