diff --git a/psutil/tests/__init__.py b/psutil/tests/__init__.py
index fe9b2fcc7..aaced046e 100644
--- a/psutil/tests/__init__.py
+++ b/psutil/tests/__init__.py
@@ -964,17 +964,41 @@ def assertProcessZombie(self, proc):
         self.assertEqual(proc.status(), psutil.STATUS_ZOMBIE)
         # It should be considered 'running'.
         assert proc.is_running()
+        assert psutil.pid_exists(proc.pid)
         # as_dict() shouldn't crash.
         proc.as_dict()
         # It should show up in pids() and process_iter().
         self.assertIn(proc.pid, psutil.pids())
         self.assertIn(proc.pid, [x.pid for x in psutil.process_iter()])
-        # It cannot be signaled or terminated.
+        psutil._pmap = {}
+        self.assertIn(proc.pid, [x.pid for x in psutil.process_iter()])
+        # Call all methods.
+        ns = process_namespace(proc)
+        for fun, name in ns.iter(ns.all):
+            with self.subTest(name):
+                try:
+                    fun()
+                except (psutil.ZombieProcess, psutil.AccessDenied):
+                    pass
+        # Make sure getters does not return 'null' values.
+        for fun, name in ns.iter(ns.getters):
+            with self.subTest(name):
+                try:
+                    retval = fun()
+                    self.assertNotIn(retval, ("", None, []))
+                except (psutil.ZombieProcess, psutil.AccessDenied):
+                    pass
+        # Zombie cannot be signaled or terminated.
         proc.suspend()
         proc.resume()
         proc.terminate()
         proc.kill()
         assert proc.is_running()
+        assert psutil.pid_exists(proc.pid)
+        self.assertIn(proc.pid, psutil.pids())
+        self.assertIn(proc.pid, [x.pid for x in psutil.process_iter()])
+        psutil._pmap = {}
+        self.assertIn(proc.pid, [x.pid for x in psutil.process_iter()])
 
         # Its parent should 'see' it (edit: not true on BSD and MACOS).
         # descendants = [x.pid for x in psutil.Process().children(
diff --git a/psutil/tests/test_process.py b/psutil/tests/test_process.py
index 5cc1f9291..3ab05ba0c 100755
--- a/psutil/tests/test_process.py
+++ b/psutil/tests/test_process.py
@@ -1322,27 +1322,6 @@ def assert_raises_nsp(fun, fun_name):
     def test_zombie_process(self):
         parent, zombie = self.spawn_zombie()
         self.assertProcessZombie(zombie)
-        ns = process_namespace(zombie)
-        for fun, name in ns.iter(ns.all):
-            with self.subTest(name):
-                try:
-                    fun()
-                except (psutil.ZombieProcess, psutil.AccessDenied):
-                    pass
-
-        for fun, name in ns.iter(ns.getters):
-            with self.subTest(name):
-                try:
-                    retval = fun()
-                    self.assertNotIn(retval, ("", None, []))
-                except (psutil.ZombieProcess, psutil.AccessDenied):
-                    pass
-
-        assert psutil.pid_exists(zombie.pid)
-        self.assertIn(zombie.pid, psutil.pids())
-        self.assertIn(zombie.pid, [x.pid for x in psutil.process_iter()])
-        psutil._pmap = {}
-        self.assertIn(zombie.pid, [x.pid for x in psutil.process_iter()])
 
     @unittest.skipIf(not POSIX, 'POSIX only')
     def test_zombie_process_is_running_w_exc(self):