use next available port for testing

Author: JoshMcCullough

scripts.sh

@@ -47,8 +47,10 @@ clean_module() {
 }
 
 start_nginx() {
-	printf "${BLUE}Starting NGINX container (${IMAGE_NAME})...${NC}\n"
-	docker run --rm --name "${IMAGE_NAME}" -d -p 8000:80 ${FULL_IMAGE_NAME} >/dev/null
+	local port=$(get_port)
+
+	printf "${BLUE}Starting NGINX container (${IMAGE_NAME}) on port ${port}...${NC}\n"
+	docker run --rm --name "${IMAGE_NAME}" -d -p ${PORT}:80 ${FULL_IMAGE_NAME} >/dev/null
 }
 
 stop_nginx() {
@@ -82,11 +84,13 @@ build_test_runner() {
 	local dockerArgs=${1:-}
 	local configHash=$(get_hash $(find test -type f -not -name 'test.sh' -not -name '*.yml' -not -name 'Dockerfile*'))
 	local sourceHash=$(get_hash test/test.sh)
-
-	printf "${BLUE}Building test runner...${NC}\n"
+	local port=$(get_port)
+	
+	printf "${BLUE}Building test runner using port ${port}...${NC}\n"
 	docker compose -f ./test/docker-compose-test.yml build ${dockerArgs} \
 		--build-arg CONFIG_HASH=${configHash}\
-		--build-arg SOURCE_HASH=${sourceHash}
+		--build-arg SOURCE_HASH=${sourceHash} \
+		--build-arg PORT=${port}
 }
 
 rebuild_test_runner() {
@@ -105,7 +109,7 @@ test() {
 		docker logs ${CONTAINER_NAME_PREFIX}
 		printf "${NC}\n"
 	else
-		docker start -a ${CONTAINER_NAME_PREFIX}-runner
+		test_now
 	fi
 
 	docker compose -f ./test/docker-compose-test.yml down
@@ -119,6 +123,15 @@ get_hash() {
 	sha1sum $@ | sed -E 's|\s+|:|' | tr '\n' ' ' | sha1sum | head -c 40
 }
 
+get_port() {
+	for p in $(seq 8000 8100); do
+		if ! ss -ln | grep -q ":${p} "; then
+			echo ${p}
+			break
+		fi
+	done
+}
+
 if [ $# -eq 0 ]; then
 	all
 else

test/Dockerfile-test-nginx

@@ -1,9 +1,12 @@
 ARG BASE_IMAGE
 ARG CONFIG_HASH
+ARG PORT
 
 FROM ${BASE_IMAGE} as NGINX
 ARG CONFIG_HASH
+ARG PORT
 RUN echo "Config Hash: ${CONFIG_HASH}"
 COPY /docker-entrypoint.d/* /docker-entrypoint.d/
 COPY /etc/nginx/conf.d/test.conf /etc/nginx/conf.d/test.conf
 COPY /etc/nginx/rsa_key_2048-pub.pem /etc/nginx/rsa-key.conf
+RUN sed -i "s|%{PORT}|${PORT}|" /etc/nginx/conf.d/test.conf

test/Dockerfile-test-runner

@@ -1,10 +1,13 @@
 ARG SOURCE_HASH
+ARG PORT
 
 FROM alpine:3.7 AS test-base
 RUN apk add curl bash
 
 FROM test-base AS test
 ARG SOURCE_HASH
+ARG PORT
+ENV PORT=${PORT}
 RUN echo "Source Hash: ${SOURCE_HASH}"
 COPY test.sh .
-CMD ["./test.sh"]
+CMD ./test.sh ${PORT}

test/etc/nginx/conf.d/test.conf

@@ -2,7 +2,7 @@ error_log /var/log/nginx/debug.log debug;
 access_log /var/log/nginx/access.log;
 
 server {
-    listen 8000;
+    listen %{PORT};
     server_name localhost;
 
     auth_jwt_key "00112233445566778899AABBCCDDEEFF00112233445566778899AABBCCDDEEFF";

test/test.sh

@@ -1,6 +1,7 @@
-#!/bin/bash
+#!/bin/bash -u
 
 # set a test # here to execute only that test and output additional info
+PORT=${1:-8000}
 DEBUG=
 
 RED='\e[31m'
@@ -45,7 +46,7 @@ run_test () {
       esac
     done
 
-    curlCommand="curl -s -v http://nginx:8000${path} -H 'Cache-Control: no-cache' ${extraCurlOpts} 2>&1"
+    curlCommand="curl -s -v http://nginx:${PORT}${path} -H 'Cache-Control: no-cache' ${extraCurlOpts} 2>&1"
     response=$(eval "${curlCommand}")
     exitCode=$?
 
@@ -224,4 +225,5 @@ if [ "${DEBUG}" != '' ]; then
  printf "\n${RED}Some tests will be skipped since DEBUG is set.${NC}\n"
 fi
 
+printf "\n${GRAY}Starting tests using port ${PORT}...${NC}\n"
 main