Successfully pass the doxygen test

test/test_image.sh

@@ -2,6 +2,9 @@
 
 set -eu
 
+declare -g EXCEPTED_DOC_BASE_PATH='/usr/share/nginx/html/octocat/hello-world'
+declare -g VERBOSE='false'
+
 root_dir=$(readlink -f $(dirname $(realpath "$0"))/..)
 if ! [ -f "$root_dir"/id_rsa ]; then
   echo 'Generating SSH key'
@@ -34,10 +37,27 @@ run_image() {
     -c "sed -i 's/ssh/ssh -p 2222/g' /entrypoint.sh && sed -i 's/root@nginx/codefirst@nginx/g' /entrypoint.sh && $*"
   docker stop "$nginx_id"
   docker volume rm codefirst-docdeployer-drone codefirst-docdeployer-docs
-  docker run --rm -i -v codefirst-nginx:/usr/share/nginx busybox find /usr/share/nginx
+}
+
+assert_file_exists() {
+  # Assert that the given file exists in the codefirst-nginx volume.
+  if docker run --rm -i -v codefirst-nginx:/usr/share/nginx busybox test -f "$EXCEPTED_DOC_BASE_PATH/$1"; then
+    echo -e "$1 exists: \e[32mOK\e[0m"
+  else
+    echo -e "$1 does not exist: \e[31mFAILED\e[0m"
+    if [[ "$VERBOSE" = 'true' ]]; then
+      docker run --rm -i -v codefirst-nginx:/usr/share/nginx busybox find /usr/share/nginx
+    fi
+  fi
 }
 
 docker build -t codefirst-docdeployer "$root_dir"
 docker build -t codefirst-nginx "$root_dir/test/nginx"
 
-run_image main 'doxygen -g && /entrypoint.sh -b main -l . -t doxygen -d sourcecode_documentation'
+test_doxygen() {
+  run_image main 'doxygen -g > /dev/null && /entrypoint.sh -b main -l . -t doxygen -d sourcecode_documentation'
+  assert_file_exists sourcecode_documentation/doxygen/index.html
+  docker volume rm codefirst-nginx
+}
+
+test_doxygen