minishell/test.sh

#!/usr/bin/env bash

set -uo pipefail

declare -i FAILED=0
declare -i SUCCEDED=0
declare -i TODTODO=0
declare -i RAN=0
NAME=""
EXTRAENV=""
MINISHELL=$PWD/minishell

report_header()
{
	echo "++++++++++++++++++++++++++++++++++++++++++++++++++++"
	echo $NAME
	echo "++++++++++++++++++++++++++++++++++++++++++++++++++++"
	echo "++++ test input:"
}

failed_report()
{
	NAME="failed: $NAME"
	report_header
	cat /tmp/input.minishell
	echo "++++ Got output:"
	cat /tmp/got.minishell
	echo "++++ But expected:"
	cat /tmp/expected.minishell
	echo "++++ Diff:"
	echo "(red is got, green is expected)"
	diff --color=always /tmp/got.minishell /tmp/expected.minishell
	echo "++++ Run this to debug:"
	cat < /tmp/input.minishell > /tmp/input.failed.$FAILED.minishell
	echo "cat /tmp/input.failed.$FAILED.minishell | ./minishell"
}

todo_report()
{
	NAME="todo: $NAME"
	report_header
	cat /tmp/input.minishell
	echo "++++ Got output:"
	cat /tmp/got.minishell
	echo "++++ But test was marked as todo."
	echo "++++ Run this to debug:"
	cat < /tmp/input.minishell > /tmp/input.todo.$TODO.minishell
	echo "cat /tmp/input.todo.$TODO.minishell | ./minishell"
}

failed()
{
	echo -n "F"
	FAILED+=1
	failed_report >> report.txt
}

succeded()
{
	echo -n "."
	SUCCEDED+=1
}

assert()
{
	diff -q /tmp/got.minishell /tmp/expected.minishell > /dev/null && succeded || failed
}

when_run()
{
	cat > /tmp/input.minishell
	rm -rf /tmp/dir.minishell
	mkdir -p /tmp/dir.minishell
	pushd /tmp/dir.minishell > /dev/null
	env $EXTRAENV $MINISHELL &> /tmp/got.minishell < /tmp/input.minishell
	popd > /dev/null
	EXTRAENV=""
	RAN+=1
	NAME=$1
}

expecting()
{
	cat > /tmp/expected.minishell
	assert
}

todo()
{
	echo -n "t"
	TODO+=1
	todo_report >> report.txt
}

setup()
{
	rm -f report.txt
}

finalize()
{
	echo
	echo "$RAN tests ran. $SUCCEDED succeded, $FAILED failed, $TODO todo."
	if [ $SUCCEDED -eq $RAN ];
	then
		echo "All integration tests passed!"
	else
		echo "cat report.txt"
		echo "to see details of failed/todo tests"
	fi
	exit $FAILED
}

setup

when_run <<EOF "empty inputs returns nothing"

EOF
expecting <<EOF
EOF

when_run <<EOF "simple commands are run"
echo no files:
ls -a
touch t
echo single file:
ls -a
EOF
expecting <<EOF
no files:
.
..
single file:
.
..
t
EOF

when_run <<EOF "unknown commands"
qwertyuiop
poiuytrewq
EOF
expecting <<EOF
minishell: qwertyuiop: command not found
minishell: poiuytrewq: command not found
EOF

when_run <<EOF "pwd works"
pwd
pwd hello
pwd hello there
pwd -O
pwd -O hello
pwd there -O hello
EOF
expecting <<EOF
/tmp/dir.minishell
/tmp/dir.minishell
/tmp/dir.minishell
/tmp/dir.minishell
/tmp/dir.minishell
/tmp/dir.minishell
EOF

when_run <<EOF "pwd works in any directory, can cd to absolute paths"
mkdir test
cd /tmp/dir.minishell/test
pwd
mkdir hi
cd /tmp/dir.minishell/test/hi
pwd
cd /tmp/dir.minishell/test
pwd
EOF
expecting <<EOF
/tmp/dir.minishell/test
/tmp/dir.minishell/test/hi
/tmp/dir.minishell/test
EOF

when_run <<EOF "cd will print error when going into a directory with no access"
mkdir test
chmod -x test
cd test
pwd
chmod +x test
EOF
expecting <<EOF
minishell: cd: Permission denied
/tmp/dir.minishell
EOF

EXTRAENV="HOME=/tmp/dir.minishell/fakehome"
when_run <<EOF "cd with no arguments goes to \$HOME"
mkdir fakehome
cd
pwd
EOF
expecting <<EOF
/tmp/dir.minishell/fakehome
EOF

EXTRAENV="-u HOME"
when_run <<EOF "cd with no arguments, with HOME unset, prints error message and does nothing"
cd
pwd
EOF
expecting <<EOF
minishell: cd: HOME not set
/tmp/dir.minishell
EOF

when_run <<EOF "quoted parentheses are not operators"
echo unclosed '('
EOF
todo

finalize