Change nmap parser to return an empty array if there are no hosts

Author: nigthknight

integrations/nmap/parser/parser.js

@@ -64,7 +64,8 @@ function parseResultFile(fileContent) {
       } else {
         let tempHostList = [];
         if (!xmlInput.nmaprun.host) {
-          reject(new Error("Nmap result file didn't contain a valid host. This probably means that the target was specified incorrectly."));
+          resolve([]);
+          return;
         }
 
         xmlInput = xmlInput.nmaprun.host;

integrations/nmap/parser/parser.test.js

@@ -150,5 +150,5 @@ test("should properly parse a nmap xml without any host", async () => {
     encoding: "utf8"
   });
 
-  expect(parse(xmlContent)).rejects.toThrow("Nmap result file didn't contain a valid host. This probably means that the target was specified incorrectly.")
+  expect(await parse(xmlContent)).toMatchInlineSnapshot(`Array []`);
 });