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#!/usr/bin/env bash
# Copyright (c) 2022 Egor Tensin <Egor.Tensin@gmail.com>
# This file is part of the "void" project.
# For details, see https://github.com/egor-tensin/void.
# Distributed under the MIT License.
set -o errexit -o nounset -o pipefail
script_dir="$( dirname -- "${BASH_SOURCE[0]}" )"
script_dir="$( cd -- "$script_dir" && pwd )"
readonly script_dir
script_name="$( basename -- "${BASH_SOURCE[0]}" )"
readonly script_name
readonly server_port=23666
server_pid=
curl_header_file=
curl_output_file=
dump() {
local msg
for msg; do
echo "$script_name: $msg"
done
}
run_server() {
dump "Starting up server..."
"$script_dir/../server.py" --port "$server_port" &
server_pid="$!"
dump "Its PID is $server_pid"
sleep 5
}
kill_server() {
[ -z "$server_pid" ] && return
dump "Killing server with PID $server_pid..."
kill "$server_pid"
dump "Waiting for it to terminate..."
wait "$server_pid" || true
dump "Done"
}
create_files() {
curl_header_file="$( mktemp )"
curl_output_file="$( mktemp )"
dump "curl header file: $curl_header_file"
dump "curl output file: $curl_output_file"
}
cleanup_files() {
dump "Cleaning up curl files..."
[ -n "$curl_header_file" ] && rm -f -- "$curl_header_file"
[ -n "$curl_output_file" ] && rm -f -- "$curl_output_file"
}
prepare() {
run_server
create_files
}
cleanup() {
kill_server || true
cleanup_files || true
}
run_curl() {
if [ "$#" -ne 1 ]; then
echo "usage: ${FUNCNAME[0]} URL" >&2
return 1
fi
local url="$1"
curl \
--silent --show-error \
--dump-header "$curl_header_file" \
--output "$curl_output_file" \
--connect-timeout 3 \
-- "http://localhost:$server_port$url" || true
}
curl_check_status() {
if [ "$#" -ne 1 ]; then
echo "usage: ${FUNCNAME[0]} HTTP_STATUS" >&2
return 1
fi
local expected="$1"
expected="HTTP/1.0 $expected"$'\r'
local actual
actual="$( head -n 1 -- "$curl_header_file" )"
[ "$expected" == "$actual" ] && return 0
dump "Actual HTTP response: $actual" >&2
dump "Expected: $expected" >&2
dump 'HTTP headers:' >&2
cat -- "$curl_header_file" >&2
dump 'HTTP response:' >&2
cat -- "$curl_output_file" >&2
return 1
}
curl_check_keyword() {
local keyword
for keyword; do
if ! grep --fixed-strings --quiet -- "$keyword" "$curl_output_file"; then
dump "The following pattern hasn't been found:"
dump "$keyword"
dump "The output was:"
cat -- "$curl_output_file"
return 1
fi
done
}
run_curl_test() {
if [ "$#" -lt 1 ]; then
echo "usage: ${FUNCNAME[0]} URL [KEYWORD...]" >&2
return 1
fi
local url="$1"
shift
dump "Running test for URL: $url"
run_curl "$url"
curl_check_status '200 OK'
local keyword
for keyword; do
curl_check_keyword "$keyword"
done
}
run_curl_tests() {
# / and /index.html are identical:
run_curl_test / '<title>Орём!</title>' 'var screams_now'
run_curl_test /index.html '<title>Орём!</title>' 'var screams_now'
run_curl_test /screams 0
run_curl_test /scream 1
run_curl_test /scream 2
run_curl_test /scream 3
run_curl_test /screams 3
}
cgi_check_header() {
local expected='Content-Type: text/html; charset=utf-8'
local actual
actual="$( head -n 1 -- "$curl_output_file" )"
[ "$expected" == "$actual" ] && return 0
dump "Actual CGI header: $actual" >&2
dump "Expected: $expected" >&2
diff <( echo "$actual" ) <( echo "$expected" ) | cat -te
return 1
}
run_cgi_test() {
if [ "$#" -lt 1 ]; then
echo "usage: ${FUNCNAME[0]} WHAT [KEYWORD...]" >&2
return 1
fi
local what="$1"
shift
local query_string="what=$what"
dump "Running CGI test for query string: $query_string"
QUERY_STRING="$query_string" "$script_dir/../app.py" > "$curl_output_file"
cgi_check_header
local keyword
for keyword; do
curl_check_keyword "$keyword"
done
}
run_cgi_tests() {
# Check that app.py still works as a CGI script.
# app.py doesn't save state between invocations, obviously.
run_cgi_test screams 0
run_cgi_test scream 1
run_cgi_test scream 1
run_cgi_test scream 1
run_cgi_test screams 0
}
main() {
trap cleanup EXIT
prepare
run_curl_tests
run_cgi_tests
}
main "$@"
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