added integration test for internal hello method

Fixes: #798

Adding an integration test that verifies the internal API
method 'Hello' works as expected.

Signed-off-by: Michael Engel <[email protected]>

tests/tests/tier0/bluechi-internal-hello/main.fmf

@@ -0,0 +1,2 @@
+summary: Test internal peer dbus hello method on controller
+id: eafc86bc-e69c-47a4-9ca9-907f7a6201fa

tests/tests/tier0/bluechi-internal-hello/python/call_internal_hello.py

@@ -0,0 +1,31 @@
+# SPDX-License-Identifier: LGPL-2.1-or-later
+
+import unittest
+
+from dasbus.connection import AddressedMessageBus
+
+node = "node-foo"
+
+
+class TestListenerAddedAsPeer(unittest.TestCase):
+
+    def test_call_internal_hello(self):
+
+        port = ""
+        with open("/tmp/port", "r") as f:
+            port = f.read().strip()
+        assert port is not None
+
+        # connect to controller locally
+        peer_bus = AddressedMessageBus(f"tcp:host=127.0.0.1,port={port}")
+        peer_proxy = peer_bus.get_proxy(
+            service_name="org.eclipse.bluechi",
+            object_path="/org/freedesktop/DBus",
+            interface_name="org.freedesktop.DBus"
+        )
+        resp = peer_proxy.Hello()
+        assert resp == ":1.0"
+
+
+if __name__ == "__main__":
+    unittest.main()

tests/tests/tier0/bluechi-internal-hello/test_bluechi_internal_hello.py

@@ -0,0 +1,28 @@
+# SPDX-License-Identifier: LGPL-2.1-or-later
+
+import os
+
+from typing import Dict
+from bluechi_test.test import BluechiTest
+from bluechi_test.machine import BluechiControllerMachine, BluechiAgentMachine
+from bluechi_test.config import BluechiControllerConfig
+
+NODE_FOO = "node-foo"
+
+
+def exec(ctrl: BluechiControllerMachine, nodes: Dict[str, BluechiAgentMachine]):
+
+    # pass port information to machine
+    ctrl.create_file(os.path.join("/", "tmp"), "port", ctrl.config.port)
+
+    result, output = ctrl.run_python(os.path.join("python", "call_internal_hello.py"))
+    if result != 0:
+        raise Exception(output)
+
+
+def test_bluechi_internal_hello(bluechi_test: BluechiTest, bluechi_ctrl_default_config: BluechiControllerConfig):
+
+    bluechi_ctrl_default_config.allowed_node_names = [NODE_FOO]
+    bluechi_test.set_bluechi_controller_config(bluechi_ctrl_default_config)
+
+    bluechi_test.run(exec)