#! /bin/sh
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## Copyright (c) International Business Machines  Corp., 2001                 ##
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################################################################################
#
# File :         unzip_tests.sh
#
# Description:   Test Basic functionality of unzip command. Pass in the zip
#		 file to test.
#
# Author:        Manoj Iyer, manjo@mail.utexas.edu
#
# History:       Mar 03 2003 - Created - Manoj Iyer.
#



# Function: 	chk_ifexists
#
# Description:  - Check if command required for this test exits.
#
# Input:        - $1 - calling test case.
#               - $2 - command that needs to be checked.
#
# Return:		- zero on success.
# 				- non-zero on failure.

chk_ifexists()
{
	RC=0
	which $2 > "$PWD/tst_unzip.err" || RC=$?
	if [ $? -ne 0 ]
	then
		tst_brkm TBROK NULL "$1: command $2 not found."
	fi
	return $RC
}


# Function: 	cleanup
#
# Description:  - remove temporaty files and directories.
#
# Return:		- zero on success.
# 				- non-zero on failure.
cleanup()
{
	cd /
	# remove all the temporary files created by this test.
	tst_resm TINFO "CLEAN: removing \"$LTPTMP\""
	rm -fr "$LTPTMP"
}


# Function: init
#
# Description:  - Check if command required for this test exits.
#               - Create temporary directories required for this test.
#               - Initialize global variables.
#
# Return:		- zero on success.
# 				- non-zero on failure.
init()
{
	# Initialize global variables.
	export RC=0
	export TST_TOTAL=1
	export TCID="unzip01"
	export TST_COUNT=0

	# Inititalize cleanup function.

	# create the temporary directory used by this testcase
	LTPTMP=`mktemp -d $$.XXXXXX` || tst_resm TBROK "Unable to create temporary directory with: mktemp -d $$.XXXXXX"
	trap "cleanup" 0
	cd "$LTPTMP"

	# check if commands tst_*, unzip, awk, etc exists.
	chk_ifexists INIT tst_resm  || return $RC
	chk_ifexists INIT unzip     || return $RC
	chk_ifexists INIT mkdir     || return $RC
	chk_ifexists INIT awk       || return $RC

	# create expected output files. tst_unzip.exp
	cat > $PWD/tst_unzip.out.exp <<-EOF
	Archive:  $1
    creating: tst_unzip.dir/
    creating: tst_unzip.dir/d.0/
    extracting: tst_unzip.dir/d.0/f.0
    extracting: tst_unzip.dir/d.0/f.1
    extracting: tst_unzip.dir/d.0/f.2
    creating: tst_unzip.dir/d.0/d.1/
    extracting: tst_unzip.dir/d.0/d.1/f.0
    extracting: tst_unzip.dir/d.0/d.1/f.1
    extracting: tst_unzip.dir/d.0/d.1/f.2
    creating: tst_unzip.dir/d.0/d.1/d.2/
    extracting: tst_unzip.dir/d.0/d.1/d.2/f.0
    extracting: tst_unzip.dir/d.0/d.1/d.2/f.1
    extracting: tst_unzip.dir/d.0/d.1/d.2/f.2
	EOF

	return $RC
}


# Function: 	test01
#
# Description:  - Test that unzip can uncompress .zip file correctly.
#               - Execute unzip command on a .zip file, save output to file.
#               - If unzip exits with a non-zero value or, the expected output
#                 is different from actual output, test fails.
#
# Return:		- zero on success.
# 				- non-zero on failure.
test01()
{
	count=0
	files=" "
	filesize=0
	zipfile="$1"

	TCID=unzip01
	TST_COUNT=1

	tst_resm TINFO "Test #1: unzip command un-compresses a .zip file."

	unzip "${zipfile}" > "$PWD/tst_unzip.out" || RC=$?
	if [ $RC -ne 0 ]
	then
		tst_res TFAIL "$PWD/tst_unzip.out" \
			"Test #1: unzip command failed. Return value = $RC. Details:"
		return $RC
	else
		sort -o "$PWD/tst_unzip.out" "$PWD/tst_unzip.out"
		sort -o "$PWD/tst_unzip.out.exp" "$PWD/tst_unzip.out.exp"

		diff -iwB "$PWD/tst_unzip.out" "$PWD/tst_unzip.out.exp" >\
    		          "$PWD/tst_unzip.out.err" || RC=$?

		if [ $RC -ne 0 ]
		then
			tst_res TFAIL "$PWD/tst_unzip.out.err" \
				"Test #1: unzip output differs from expected output. Details"
		else
			tst_resm TINFO "Test #1: check if \"$PWD/tst_unzip.dir\" exits."
			if ! [ -d $PWD/tst_unzip.dir ]
			then
				tst_resm TFAIL \
					"Test #1: unzip did not uncompress the .zip file"
				$((RC+1))
			else
				tst_resm TINFO \
					"Test #1: \"$PWD/tst_unzip.dir\" was created by unzip"
				tst_resm TPASS \
				   "Test #1: unzip can uncompress .zip file correctly."
			fi
		fi
	fi

	return $RC
}

# Function:	main
#
# Description:	- Execute all tests and report results.
#
# Exit:			- zero on success
#               - non-zero on failure.

RC=0
stat "$1" || exit $?
init "$1" || exit $?

test01 "$1" || RC=$?

exit $RC