diff --git a/tools/permission_prompt_test.py b/tools/permission_prompt_test.py
old mode 100644
new mode 100755
index 78053970c98664..2bc24d12cadeca
--- a/tools/permission_prompt_test.py
+++ b/tools/permission_prompt_test.py
@@ -1,3 +1,4 @@
+#!/usr/bin/env python
 import os
 import pty
 import select
@@ -63,82 +64,78 @@ def run(self,
 
     def warm_up(self):
         # ignore the ts compiling message
-        self.run('test_needs_write', b'', allow_write=True)
+        self.run('needsWrite', b'', allow_write=True)
 
     def test_write_yes(self):
-        code, stdout, stderr = self.run('test_needs_write', b'y\n')
+        code, stdout, stderr = self.run('needsWrite', b'y\n')
         assert code == 0
         assert stdout == b''
-        assert b'Deno requests write access to "make_temp". Grant? yN' in stderr
+        assert b'Deno requests write access' in stderr
 
     def test_write_arg(self):
-        code, stdout, stderr = self.run(
-            'test_needs_write', b'', allow_write=True)
+        code, stdout, stderr = self.run('needsWrite', b'', allow_write=True)
         assert code == 0
         assert stdout == b''
         assert stderr == b''
 
     def test_write_no(self):
-        code, stdout, stderr = self.run('test_needs_write', b'N\n')
+        code, stdout, stderr = self.run('needsWrite', b'N\n')
         assert code == 1
         # FIXME this error message should be in stderr
         assert b'PermissionDenied: permission denied' in stdout
-        assert b'Deno requests write access to "make_temp". Grant? yN' in stderr
+        assert b'Deno requests write access' in stderr
 
     def test_env_yes(self):
-        code, stdout, stderr = self.run('test_needs_env', b'y\n')
+        code, stdout, stderr = self.run('needsEnv', b'y\n')
         assert code == 0
         assert stdout == b''
-        assert b'Deno requests access to environment variables. Grant? yN' in stderr
+        assert b'Deno requests access to environment' in stderr
 
     def test_env_arg(self):
-        code, stdout, stderr = self.run('test_needs_env', b'', allow_env=True)
+        code, stdout, stderr = self.run('needsEnv', b'', allow_env=True)
         assert code == 0
         assert stdout == b''
         assert stderr == b''
 
     def test_env_no(self):
-        code, stdout, stderr = self.run('test_needs_env', b'N\n')
+        code, stdout, stderr = self.run('needsEnv', b'N\n')
         assert code == 1
         # FIXME this error message should be in stderr
         assert b'PermissionDenied: permission denied' in stdout
-        assert b'Deno requests access to environment variables. Grant? yN' in stderr
+        assert b'Deno requests access to environment' in stderr
 
     def test_net_yes(self):
-        code, stdout, stderr = self.run('test_needs_env', b'y\n')
+        code, stdout, stderr = self.run('needsEnv', b'y\n')
         assert code == 0
         assert stdout == b''
-        assert b'Deno requests access to environment variables. Grant? yN' in stderr
+        assert b'Deno requests access to environment' in stderr
 
     def test_net_arg(self):
-        code, stdout, stderr = self.run('test_needs_net', b'', allow_net=True)
+        code, stdout, stderr = self.run('needsNet', b'', allow_net=True)
         assert code == 0
         assert stdout == b''
         assert stderr == b''
 
     def test_net_no(self):
-        code, stdout, stderr = self.run('test_needs_net', b'N\n')
+        code, stdout, stderr = self.run('needsNet', b'N\n')
         assert code == 1
         # FIXME this error message should be in stderr
         assert b'PermissionDenied: permission denied' in stdout
-        assert b'Deno requests network access to "http://localhost:4545". Grant? yN' in stderr
-
-    def run_tests(self):
-        self.warm_up()
-        self.test_write_yes()
-        self.test_write_arg()
-        self.test_write_no()
-        self.test_env_yes()
-        self.test_env_arg()
-        self.test_env_no()
-        self.test_net_yes()
-        self.test_net_arg()
-        self.test_net_no()
+        assert b'Deno requests network access' in stderr
 
 
 def permission_prompt_test(deno_exe):
     p = Prompt(deno_exe)
-    p.run_tests()
+    p.warm_up()
+    p.test_write_yes()
+    p.test_write_arg()
+    p.test_write_no()
+    p.test_env_yes()
+    p.test_env_arg()
+    p.test_env_no()
+    p.test_net_yes()
+    p.test_net_arg()
+    p.test_net_no()
 
 
 if __name__ == "__main__":
diff --git a/tools/permission_prompt_test.ts b/tools/permission_prompt_test.ts
index 0a3ff9a98ebca1..cf8a09805cd7dd 100644
--- a/tools/permission_prompt_test.ts
+++ b/tools/permission_prompt_test.ts
@@ -1,21 +1,21 @@
-import { args, env, exit, makeTempDirSync } from "deno";
+import { args, listen, env, exit, makeTempDirSync } from "deno";
 
-const tests = {};
-tests["test_needs_write"] = function() {
-  const tempDir = makeTempDirSync();
-};
-tests["test_needs_env"] = function() {
-  const home = env().home;
-};
-tests["test_needs_net"] = function() {
-  fetch("http://localhost:4545");
-};
+const name = args[1];
+const test = {
+  needsWrite: () => {
+    makeTempDirSync();
+  },
+  needsEnv: () => {
+    env().home;
+  },
+  needsNet: () => {
+    listen("tcp", "127.0.0.1:4540");
+  }
+}[name];
 
-const test_name = args[1];
-
-if (test_name in tests) {
-  tests[test_name]();
-} else {
-  console.log("Unknown test:", test_name);
+if (!test) {
+  console.log("Unknown test:", name);
   exit(1);
 }
+
+test();