test: add tests for routes

src/routes/http-types.ts

@@ -13,33 +13,15 @@
  * You should have received a copy of the GNU Affero General Public License
  * along with this program.  If not, see <https://www.gnu.org/licenses/>.
  */
+// the list provides option to easily implement "isHttpMethod" guard
+const httpVerbs = ['get', 'post', 'put', 'delete', 'patch', 'options',
+  'head', 'checkout', 'copy', 'lock', 'merge', 'mkactivity', 'mkcol',
+  'move', 'm-search', 'notify', 'purge', 'report', 'search', 'subscribe',
+  'trace', 'unlock','unsubscribe'] as const;
 /**
- * Strings that can be used as HTTP verbs (e.g. in requests)
+ * Strings that can be used as HTTP verbs (e.g. in requests): 'get' | 'post' | 'put' | 'delete' etc.
  */
-export type HTTPVerb = 'all' |
-  'get' |
-  'post' |
-  'put' |
-  'delete' |
-  'patch' |
-  'options' |
-  'head' |
-  'checkout' |
-  'copy' |
-  'lock' |
-  'merge' |
-  'mkactivity' |
-  'mkcol' |
-  'move' |
-  'm-search' |
-  'notify' |
-  'purge' |
-  'report' |
-  'search' |
-  'subscribe' |
-  'trace' |
-  'unlock' |
-  'unsubscribe';
+export type HTTPVerb = typeof httpVerbs[number];
 
 /**
  * Provides information if a text (representing a method) is an HTTP verb
@@ -47,5 +29,5 @@ export type HTTPVerb = 'all' |
  * @param method A text (representing a method) to check
  */
 export function isHttpMethod(method: string): method is HTTPVerb {
-  return ['get', 'post', 'put'].indexOf(method) > -1;
+  return (httpVerbs as unknown as string[]).indexOf(method) > -1;
 }