fish-shell/tests/invocation.sh
Fabian Homborg 2614deb138 tests/invocation: Use ggrep if available
We use grep -o here to filter output, but that's not available on
OpenIndiana.

It does offer "ggrep" though, which is GNU grep.
2019-02-13 13:49:53 +01:00

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#!/bin/sh
##
# Test that the invocation of the fish executable works as we hope.
#
# We try to run the 'fish' binary with different command line switches.
# Each time we check against an output that we expect.
#
# We are testing fish's invocation itself, so this is not written in
# fish itself - if the invocation wasn't working, we'd never even
# be able to use this test to check that the invocation wasn't working.
#
# What we test...
#
# * The environment is cleaned so that (hopefully) differences in
# the host terminal, language or user settings do not affect the
# tests.
#
# * The files 'tests/invocation/*.invoke' contain the arguments that
# will be passed to the 'fish' command under test. The arguments
# may be split over multiple lines for clarity.
#
# * Before execution, if the file 'tests/invocation/<name>.config'
# exists, it will be copied as the 'config.fish' file in the
# configuration directory.
#
# * The stdout and stderr are captured into files and will be
# processed before comparison with the
# 'tests/invocation/<name>.(out|err)' files. A missing file is
# considered to be no output.
# Either file may be given a further suffix of '.<system name>'
# which will be used in preference to the default. This allows
# the expected output to change depending on the system being
# used - to allow for differences in behaviour.
# The '<system name>' can be found with 'uname -s'.
# This facility should be used sparingly as system differences
# will confuse users.
#
# * The file 'tests/invocation/<name>.grep' is used to select the
# sections of the file we are interested in within the stdout.
# Only the parts that match will be compared to the '*.out' file.
# This can be used to filter out changeable parts of the output
# leaving just the parts we are interested in.
#
# * The stderr output will have the 'RC: <return code>' appended
# if the command returned a non-zero value.
# The stderr output will have the 'XDG_CONFIG_HOME' location
# substituted, to allow error reports to be compared consistently.
#
# * If the processed output differs from the supplied output,
# the test will fail, and the differences will be shown on the
# console.
#
# * If anything fails, the return code for this script will be
# non-zero.
#
# With this, errors would be fatal.
# However, a return value of non-zero doesn't signal something that necessarily should be fatal.
# For instance, `tput` returns 1 if an attribute isn't defined.
# But we don't want it to kill our script, especially not without any indication.
#
# set -e
# The directory this script is in (as everything is relative to here)
here="$(cd "$(dirname "$0")" && pwd -P)"
cd "$here"
# The temporary directory to use
temp_dir="$here/../test"
# The fish binary we are testing - for manual testing, may be overridden
fish_exe="${fish_exe:-../test/root/bin/fish}"
fish_dir="$(dirname "${fish_exe}")"
fish_leaf="$(basename "${fish_exe}")"
# Which system are we on.
# fish has slightly different behaviour depending on the system it is
# running on (and the libraries that it is linked with), so for special
# cases, we'll use a suffixed file.
system_name="$(uname -s)"
# Check whether we have the 'colordiff' tool - if not, we'll revert to
# boring regular 'diff'.
if command -v colordiff >/dev/null 2>&1; then
difftool='colordiff'
else
difftool='diff'
fi
##
# Set variables to known values so that they will not affect the
# execution of the test.
clean_environment() {
# Reset the terminal variables to a known type.
export TERM=xterm
unset ITERM_PROFILE
# And the language as well, so that we do not see differences in
# output dur to the user's locale
export LANGUAGE=en_US:en
# Ensure that the fish environment we use is in a clean state
rm -rf "${temp_dir}/data" "${temp_dir}/home"
mkdir -p "${temp_dir}/data" "${temp_dir}/home" "${temp_dir}/home/fish"
export XDG_DATA_HOME="${temp_dir}/data"
export XDG_CONFIG_HOME="${temp_dir}/home"
}
##
# Fail completely :-(
fail() {
say "$term_red" "FAIL: $*" >&2
exit 1
}
##
# Coloured output
#
# Use like `say "$term_green" "message".
say() {
echo "$1$2$term_reset"
}
run_rc() {
# Write the return code on to the end of the stderr, so that it can be
# checked like anything else.
eval "$*" || echo "RC: $?" >&2
}
filter() {
# In some cases we want to check only a part of the output.
# For those we filter the output through grep'd matches.
if [ -f "$1" ] ; then
# grep '-o', '-E' and '-f' are supported by the tools in modern GNU
# environments, and on OS X.
#
# But not on OpenIndiana/Illumos, so we use ggrep if available.
if command -v ggrep >/dev/null 2>&1; then
ggrep -oE -f "$1"
else
grep -oE -f "$1"
fi
else
cat
fi
}
##
# Actual testing of a .invoke file.
test_file() (
file="$1"
dir="$(dirname "$file")"
base="$(basename "$file" .invoke)"
test_config="${dir}/${base}.config"
test_stdout="${dir}/${base}.tmp.out"
test_stderr="${dir}/${base}.tmp.err"
want_stdout="${dir}/${base}.out"
grep_stdout="${dir}/${base}.grep"
want_stderr="${dir}/${base}.err"
empty="${dir}/${base}.empty"
rc=0
test_args_literal=
test_args=
out_status=0
err_status=0
# Literal arguments, for printing
test_args_literal="$(cat "$file")"
# Read the test arguments, escaping things that might be processed by us
test_args="$(sed 's/\$/\$/' "$file" | tr '\n' ' ')"
# Select system-specific files if they are present.
system_specific=
if [ -f "${test_config}.${system_name}" ] ; then
test_config="${test_config}.${system_name}"
system_specific=true
fi
if [ -f "${want_stdout}.${system_name}" ] ; then
want_stdout="${want_stdout}.${system_name}"
system_specific=true
fi
if [ -f "${want_stderr}.${system_name}" ] ; then
want_stderr="${want_stderr}.${system_name}"
system_specific=true
fi
if [ -f "${grep_stdout}.${system_name}" ] ; then
grep_stdout="${grep_stdout}.${system_name}"
system_specific=true
fi
# Create an empty file so that we can compare against it if needed
touch "${empty}"
# If they supplied a configuration file, we create it here
if [ -f "$test_config" ] ; then
cat "$test_config" > "${temp_dir}/home/fish/config.fish"
else
rm -f "${temp_dir}/home/fish/config.fish"
fi
printf '%s' "Testing file $file ${system_specific:+($system_name specific) }... "
# The hoops we are jumping through here, with changing directory are
# so that we always execute fish as './fish', which means that any
# error messages will appear the same, even if the tested binary
# is not one that we built here.
# We disable the exit-on-error here, so that we can catch the return
# code.
set +e
run_rc "cd \"$fish_dir\" && \"./$fish_leaf\" $test_args" \
2> "$test_stderr" \
< /dev/null \
| filter "$grep_stdout" \
> "$test_stdout"
set -e
# If the wanted output files are not present, they are assumed empty.
if [ ! -f "$want_stdout" ] ; then
want_stdout="$empty"
fi
if [ ! -f "$want_stderr" ] ; then
want_stderr="$empty"
fi
# The standard error that we get will report errors using non-relative
# filenames, so we try to replace these with the variable names.
#
# However, fish will also have helpfully translated the home directory
# into '~/' in the error report. Consequently, we need to perform a
# small fix-up so that we can replace the string sanely.
xdg_config_in_home="${XDG_CONFIG_HOME#$HOME}"
if [ "${#xdg_config_in_home}" -lt "${#XDG_CONFIG_HOME}" ]; then
xdg_config_in_home="~$xdg_config_in_home"
fi
# 'sed -i' (inplace) has different syntax on BSD and GNU versions of
# the tool, so cannot be used here, hence we write to a separate file,
# and then move back.
sed "s,$xdg_config_in_home,\$XDG_CONFIG_HOME,g" "${test_stderr}" > "${test_stderr}.new"
mv -f "${test_stderr}.new" "${test_stderr}"
# Check the results
if ! diff "${test_stdout}" "${want_stdout}" >/dev/null 2>/dev/null ; then
out_status=1
fi
if ! diff "${test_stderr}" "${want_stderr}" >/dev/null 2>/dev/null ; then
err_status=1
fi
if [ "$out_status" = '0' ] && \
[ "$err_status" = '0' ] ; then
say "$term_green" "ok"
# clean up tmp files
rm -f "${test_stdout}" "${test_stderr}" "${empty}"
rc=0
else
say "$term_red" "fail"
say "$term_blue" "$test_args_literal" | sed 's/^/ /'
if [ "$out_status" != '0' ] ; then
say "$term_yellow" "Output differs for file $file. Diff follows:"
"$difftool" -u "${test_stdout}" "${want_stdout}"
fi
if [ "$err_status" != '0' ] ; then
say "$term_yellow" "Error output differs for file $file. Diff follows:"
"$difftool" -u "${test_stderr}" "${want_stderr}"
fi
rc=1
fi
return $rc
)
########################################################################
# Main harness
if [ ! -x "${fish_exe}" ] ; then
fail "Fish executable not found at '${fish_exe}'"
fi
clean_environment
# Terminal colouring
# Only do this after setting up $TERM.
term_red=""
term_green=""
term_yellow=""
term_blue=""
term_magenta=""
term_cyan=""
term_white=""
term_reset=""
# Some systems don't have tput. Disable coloring.
if command -v tput >/dev/null 2>&1; then
term_red="$(tput setaf 1)"
term_green="$(tput setaf 2)"
term_yellow="$(tput setaf 3)"
term_blue="$(tput setaf 4)"
term_magenta="$(tput setaf 5)"
term_cyan="$(tput setaf 6)"
term_white="$(tput setaf 7)"
term_reset="$(tput sgr0)"
fi
say "$term_cyan" "Testing shell invocation functionality"
passed=0
failed=0
for file in invocation/*.invoke; do
if ! test_file "$file" ; then
failed=$(( failed + 1 ))
else
passed=$(( passed + 1 ))
fi
done
echo "Encountered $failed errors in the invocation tests (out of $(( failed + passed )))."
if [ "$failed" != 0 ] ; then
exit 1
fi
exit 0