1 files changed, 51 insertions, 0 deletions
diff --git a/app/tests/test_backends_servers.py b/app/tests/test_backends_servers.py
index 02b65e6..987ff24 100644
--- a/app/tests/test_backends_servers.py
+++ b/app/tests/test_backends_servers.py
@@ -123,6 +123,57 @@ class StopTests(unittest.TestCase):
         self.assertFalse((self.dir / "test-server.pid").exists())
 
 
+class ManagesTests(unittest.TestCase):
+    """manages(): a live recorded pid marks a server as ours."""
+
+    def setUp(self):
+        self._tmp = tempfile.TemporaryDirectory()
+        self.dir = Path(self._tmp.name)
+        self.specs = [ServerSpec("test", "http://127.0.0.1:9999", [])]
+
+    def tearDown(self):
+        self._tmp.cleanup()
+
+    def _write_pid(self, name, pid):
+        (self.dir / f"{name}-server.pid").write_text(str(pid),
+                                                     encoding="utf-8")
+
+    def test_false_without_pid_file(self):
+        with patch.object(servers, "LOG_DIR", self.dir):
+            self.assertFalse(servers.manages(self.specs))
+
+    def test_true_with_live_recorded_pid(self):
+        self._write_pid("test", 4242)
+        with patch.object(servers, "LOG_DIR", self.dir), \
+                patch.object(servers, "_pid_alive", return_value=True):
+            self.assertTrue(servers.manages(self.specs))
+
+    def test_false_with_dead_recorded_pid(self):
+        self._write_pid("test", 4242)
+        with patch.object(servers, "LOG_DIR", self.dir), \
+                patch.object(servers, "_pid_alive", return_value=False):
+            self.assertFalse(servers.manages(self.specs))
+
+    def test_false_with_corrupt_pid_file(self):
+        (self.dir / "test-server.pid").write_text("junk",
+                                                  encoding="utf-8")
+        with patch.object(servers, "LOG_DIR", self.dir), \
+                patch.object(servers, "_pid_alive",
+                             return_value=True) as mk_alive:
+            self.assertFalse(servers.manages(self.specs))
+        mk_alive.assert_not_called()
+
+    def test_true_when_any_spec_is_ours(self):
+        other = ServerSpec("other", "http://127.0.0.1:9998", [])
+        with patch.object(servers, "LOG_DIR", self.dir), \
+                patch.object(servers, "_pid_alive", return_value=True):
+            self._write_pid("test", 4242)
+            self.assertTrue(servers.manages([other] + self.specs))
+        # The live pid belongs to 'test'; 'other' alone stays unmanaged.
+        with patch.object(servers, "LOG_DIR", self.dir):
+            self.assertFalse(servers.manages([other]))
+
+
 class PidForTests(unittest.TestCase):
     def setUp(self):
         self._tmp = tempfile.TemporaryDirectory()