fix(cli): fixed support for devices as cli input

tests/unit_tests/test_client_utils.py

@@ -0,0 +1,29 @@
+from unittest import mock
+
+import pytest
+
+from bec_widgets.cli.client import BECFigure
+
+from .client_mocks import FakeDevice
+
+
+@pytest.fixture
+def cli_figure():
+    fig = BECFigure(gui_id="test")
+    with mock.patch.object(fig, "_run_rpc") as mock_rpc_call:
+        with mock.patch.object(fig, "gui_is_alive", return_value=True):
+            yield fig, mock_rpc_call
+
+
+def test_rpc_call_plot(cli_figure):
+    fig, mock_rpc_call = cli_figure
+    fig.plot("samx", "bpm4i")
+    mock_rpc_call.assert_called_with("plot", "samx", "bpm4i")
+
+
+def test_rpc_call_accepts_device_as_input(cli_figure):
+    dev1 = FakeDevice("samx")
+    dev2 = FakeDevice("bpm4i")
+    fig, mock_rpc_call = cli_figure
+    fig.plot(dev1, dev2)
+    mock_rpc_call.assert_called_with("plot", "samx", "bpm4i")