Use spawn to see what server outputs

end2end/tests/express-mongodb.test.js

@@ -1,5 +1,5 @@
 const t = require("tap");
-const { exec } = require("node:child_process");
+const { spawn } = require("node:child_process");
 const { resolve } = require("node:path");
 
 const pathToApp = resolve(
@@ -9,12 +9,23 @@ const pathToApp = resolve(
 );
 
 t.test("it blocks in blocking mode", (t) => {
-  const server = exec(`node ${pathToApp}`, (err, stdout, stderr) => {
-    t.match(stdout, /Starting agent/);
-    t.match(stderr, /Aikido guard has blocked a NoSQL injection/);
-    t.end();
+  const server = spawn(`node`, [pathToApp]);
+
+  let stdout = "";
+  let stderr = "";
+
+  server.stdout.on("data", (data) => {
+    console.log("stdout", data);
+    stdout += data;
+  });
+
+  server.stderr.on("data", (data) => {
+    console.log("stderr", data);
+    stderr += data;
   });
 
+  server.unref();
+
   setTimeout(() => {
     Promise.all([
       fetch("http://localhost:4000/?search[$ne]=null", {
@@ -28,11 +39,13 @@ t.test("it blocks in blocking mode", (t) => {
         const [noSQLInjection, normalSearch] = results;
         t.equal(noSQLInjection.status, 500);
         t.equal(normalSearch.status, 200);
-        server.kill();
+        t.match(stdout, /Starting agent/);
+        t.match(stderr, /Aikido guard has blocked a NoSQL injection/);
+        t.end();
       })
       .catch((error) => {
         t.fail(error.message);
-        server.kill();
+        t.end();
       });
   }, 1000);
 });