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#!/bin/sh
# Copyright 2009 The Go Authors. All rights reserved.
# Use of this source code is governed by a BSD-style
# license that can be found in the LICENSE file.

# Using all the *_test.go files in the current directory, write out a file
# _testmain.go that runs all its tests. Compile everything and run the
# tests.
# If files are named on the command line, use them instead of *_test.go.

# Makes egrep,grep work better in general if we put them
# in ordinary C mode instead of what the current language is.
unset LANG
export LC_ALL=C
export LC_CTYPE=C

GC=${GC:-gccgo}
GL=${GL:-${GC-gccgo}}
GOLIBS=
export GC GL GOLIBS

NM=${NM:-nm}

# srcdir is where the source files are found.  basedir is where the
# source file paths are relative to.
# gofiles are the test files.  pkgfiles are the source files.
srcdir=.
basedir=.
gofiles=""
pkgfiles=""
loop=true
keep=false
prefix=
dejagnu=no
while $loop; do
	case "x$1" in
        x--srcdir)
		srcdir=$2
		shift
		shift
		;;
	x--srcdir=*)
		srcdir=`echo $1 | sed -e 's/^--srcdir=//'`
		shift
		;;
        x--basedir)
		basedir=$2
		shift
		shift
		;;
	x--basedir=*)
		basedir=`echo $1 | sed -e 's/^--basedir=//'`
		shift
		;;
	x--prefix)
		prefix=$2
		shift
		shift
		;;
	x--prefix=*)
		prefix=`echo $1 | sed -e 's/^--prefix=//'`
		shift
		;;
	x--keep)
		keep=true
                shift
		;;
	x--pkgfiles)
		pkgfiles=$2
		shift
		shift
		;;
	x--pkgfiles=*)
		pkgfiles=`echo $1 | sed -e 's/^--pkgfiles=//'`
		shift
		;;
	x--dejagnu)
		dejagnu=$2
		shift
		shift
		;;
	x--dejagnu=*)
		dejagnu=`echo $1 | sed -e 's/^--dejagnu=//'`
		shift
		;;
	x-*)
		loop=false
		;;
	x)
		loop=false
		;;
	*)
		gofiles="$gofiles $1"
		shift
		;;
	esac
done

DIR=gotest$$
rm -rf $DIR
mkdir $DIR

cd $DIR

if test $keep = false; then
  trap "cd ..; rm -rf $DIR" 0 1 2 3 14 15
else
  trap "cd ..; echo Keeping $DIR" 0 1 2 3 14 15
fi

case "$srcdir" in
	/*)
		;;
	*)
		srcdir="../$srcdir"
                ;;
esac

SRCDIR=$srcdir
export SRCDIR

case "$basedir" in
	/*)
		;;
	*)
		basedir="../$basedir"
                ;;
esac

# Link all the files/directories in srcdir into our working directory,
# so that the tests do not have to refer to srcdir to find test data.
ln -s $srcdir/* .

# Copy the .go files because io/utils_test.go expects a regular file.
case "x$gofiles" in
x)
	case "x$pkgfiles" in
	x)
		for f in `cd $srcdir; ls *.go`; do
		    rm -f $f;
		    cp $srcdir/$f .
		done
		;;
	*)
		for f in $pkgfiles; do
		    if test -f $basedir/$f; then
			b=`basename $f`
			rm -f $b
			cp $basedir/$f $b
		    elif test -f ../$f; then
			b=`basename $f`
			rm -f $b
			cp ../$f $b
		    else
			echo "file $f not found" 1>&2
			exit 1
		    fi
		done
		for f in `cd $srcdir; ls *_test.go`; do
		    rm -f $f
		    cp $srcdir/$f .
		done
		;;
	esac
	;;
*)
	for f in $gofiles; do
	    b=`basename $f`
	    rm -f $b
	    cp $basedir/$f $b
	done
	case "x$pkgfiles" in
	x)
		for f in `cd $srcdir; ls *.go | grep -v *_test.go`; do
		    rm -f $f
		    cp $srcdir/$f .
		done
		;;
	*)
		for f in $pkgfiles; do
		    if test -f $basedir/$f; then
			b=`basename $f`
			rm -f $b
			cp $basedir/$f $b
		    elif test -f ../$f; then
			b=`basename $f`
			rm -f $b
			cp ../$f $b
		    else
			echo "file $f not found" 1>&2
			exit 1
		    fi
		done
		;;
	esac
	;;
esac

# Some tests expect the _obj directory created by the gc Makefiles.
mkdir _obj

# Some tests expect the _test directory created by the gc Makefiles.
mkdir _test

case "x$gofiles" in
x)
	gofiles=$(echo -n $(ls *_test.go 2>/dev/null))
esac

case "x$gofiles" in
x)
	echo 'no test files found' 1>&2
	exit 1
esac

# Run any commands given in sources, like
#   // gotest: $GC foo.go
# to build any test-only dependencies.
holdGC="$GC"
GC="$GC -g -c -I ."
sed -n 's/^\/\/ gotest: //p' $gofiles | sh
GC="$holdGC"

case "x$pkgfiles" in
x)
	pkgbasefiles=$(echo -n $(ls *.go | grep -v _test.go 2>/dev/null))
	;;
*)
	for f in $pkgfiles; do
	    pkgbasefiles="$pkgbasefiles `basename $f`"
	done
	;;
esac

case "x$pkgfiles" in
x)
	echo 'no source files found' 1>&2
	exit 1
	;;
esac

# Split $gofiles into external gofiles (those in *_test packages)
# and internal ones (those in the main package).
xgofiles=$(echo $(grep '^package[ 	]' $gofiles /dev/null | grep ':.*_test' | sed 's/:.*//'))
gofiles=$(echo $(grep '^package[ 	]' $gofiles /dev/null | grep -v ':.*_test' | sed 's/:.*//'))

# External $O file
xofile=""
havex=false
if [ "x$xgofiles" != "x" ]; then
	xofile="_xtest_.o"
	havex=true
fi

set -e

package=`echo ${srcdir} | sed -e 's|^.*libgo/go/||'`

prefixarg=
if test -n "$prefix"; then
	prefixarg="-fgo-prefix=$prefix"
fi

$GC -g $prefixarg -c -I . -o _gotest_.o $gofiles $pkgbasefiles
if $havex; then
	mkdir -p `dirname $package`
	cp _gotest_.o `dirname $package`/lib`basename $package`.a
	$GC -g -c -I . -o $xofile $xgofiles
fi

# They all compile; now generate the code to call them.
{
	# test functions are named TestFoo
	# the grep -v eliminates methods and other special names
	# that have multiple dots.
	pattern='Test([^a-z].*)?'
	# The -p option tells GNU nm not to sort.
	# The -v option tells Solaris nm to sort by value.
	tests=$($NM -p -v _gotest_.o $xofile | egrep ' T .*\.'$pattern'$' | grep -v '\..*\..*\.' | sed 's/.* //' | sed 's/.*\.\(.*\.\)/\1/')
	if [ "x$tests" = x ]; then
		echo 'gotest: warning: no tests matching '$pattern in _gotest_.o $xofile 1>&2
		exit 2
	fi

	# package spec
	echo 'package main'
	echo
	# imports
	if echo "$tests" | egrep -v '_test\.' >/dev/null; then
		echo 'import "./_gotest_"'
	fi
	if $havex; then
		echo 'import "./_xtest_"'
	fi
	if [ $package != "testing" ]; then
		echo 'import "testing"'
		echo 'import __regexp__ "regexp"' # rename in case tested package is called regexp
	fi
	# test array
	echo
	echo 'var tests = []testing.InternalTest {'
	for i in $tests
	do
		echo '	{ "'$i'", '$i' },'
	done
	echo '}'
	# body
	echo
	echo 'func main() {'
	echo '	testing.Main(__regexp__.MatchString, tests)'
	echo '}'
}>_testmain.go

case "x$dejagnu" in
xno)
	${GC} -g -c _testmain.go
	${GL} *.o ${GOLIBS}
	./a.out "$@"
	;;
xyes)
	rm -rf ../testsuite/*.o
	files=`echo *`
	for f in $files; do
		if test "$f" = "_obj" || test "$f" = "_test"; then
			continue
		fi
		rm -rf ../testsuite/$f
		if test -f $f; then
			cp $f ../testsuite/
		else
			ln -s ../$DIR/$f ../testsuite/
		fi
	done
	cd ../testsuite
	rm -rf _obj _test
	mkdir _obj _test
	$MAKE check RUNTESTFLAGS="$RUNTESTFLAGS GOTEST_TMPDIR=$DIR"
	# Useful when using make check-target-libgo
	cat libgo.log >> libgo-all.log
	cat libgo.sum >> libgo-all.sum
	rm -rf $files
	;;
esac