test: unit tests moved to separate folder; scope of autouse bec_dispatcher fixture reduced only for unit tests; ci adjusted

tests/unit_tests/test_eiger_plot.py

@@ -0,0 +1,115 @@
+# pylint: disable = no-name-in-module,missing-class-docstring, missing-module-docstring
+import json
+from unittest.mock import MagicMock, patch
+
+import numpy as np
+import pyqtgraph as pg
+import pytest
+import zmq
+
+from bec_widgets.examples.eiger_plot.eiger_plot import EigerPlot
+
+
+# Common fixture for all tests
+@pytest.fixture
+def eiger_plot_instance(qtbot):
+    widget = EigerPlot()
+    qtbot.addWidget(widget)
+    qtbot.waitExposed(widget)
+    yield widget
+    widget.close()
+
+
+@pytest.mark.parametrize(
+    "fft_checked, rotation_index, transpose_checked, log_checked, expected_image",
+    [
+        (False, 0, False, False, np.array([[2, 1], [1, 5]], dtype=float)),  # just mask
+        (False, 1, False, False, np.array([[1, 5], [2, 1]], dtype=float)),  # 90 deg rotation
+        (False, 2, False, False, np.array([[5, 1], [1, 2]], dtype=float)),  # 180 deg rotation
+        (False, 0, True, False, np.array([[2, 1], [1, 5]], dtype=float)),  # transposed
+        (False, 0, False, True, np.array([[0.30103, 0.0], [0.0, 0.69897]], dtype=float)),  # log
+        (True, 0, False, False, np.array([[5.0, 3.0], [3.0, 9.0]], dtype=float)),  # FFT
+    ],
+)
+def test_on_image_update(
+    qtbot,
+    eiger_plot_instance,
+    fft_checked,
+    rotation_index,
+    transpose_checked,
+    log_checked,
+    expected_image,
+):
+    # Initialize image and mask
+    eiger_plot_instance.image = np.array([[1, 2], [3, 4]], dtype=float)
+    eiger_plot_instance.mask = np.array([[0, 1], [1, 0]], dtype=float)
+
+    # Mock UI elements
+    eiger_plot_instance.checkBox_FFT = MagicMock()
+    eiger_plot_instance.checkBox_FFT.isChecked.return_value = fft_checked
+    eiger_plot_instance.comboBox_rotation = MagicMock()
+    eiger_plot_instance.comboBox_rotation.currentIndex.return_value = rotation_index
+    eiger_plot_instance.checkBox_transpose = MagicMock()
+    eiger_plot_instance.checkBox_transpose.isChecked.return_value = transpose_checked
+    eiger_plot_instance.checkBox_log = MagicMock()
+    eiger_plot_instance.checkBox_log.isChecked.return_value = log_checked
+    eiger_plot_instance.imageItem = MagicMock()
+
+    # Call the method
+    eiger_plot_instance.on_image_update()
+
+    # Validate the transformations
+    np.testing.assert_array_almost_equal(eiger_plot_instance.image, expected_image, decimal=5)
+
+    # Validate that setImage was called
+    eiger_plot_instance.imageItem.setImage.assert_called_with(
+        eiger_plot_instance.image, autoLevels=False
+    )
+
+
+def test_init_ui(eiger_plot_instance):
+    assert isinstance(eiger_plot_instance.plot_item, pg.PlotItem)
+    assert isinstance(eiger_plot_instance.imageItem, pg.ImageItem)
+    assert isinstance(eiger_plot_instance.hist, pg.HistogramLUTItem)
+
+
+def test_start_zmq_consumer(eiger_plot_instance):
+    with patch("threading.Thread") as MockThread:
+        eiger_plot_instance.start_zmq_consumer()
+        MockThread.assert_called_once()
+        MockThread.return_value.start.assert_called_once()
+
+
+def test_zmq_consumer(eiger_plot_instance, qtbot):
+    fake_meta = json.dumps({"type": "int32", "shape": (2, 2)}).encode("utf-8")
+    fake_data = np.array([[1, 2], [3, 4]], dtype="int32").tobytes()
+
+    with patch("zmq.Context", autospec=True) as MockContext:
+        mock_socket = MagicMock()
+        mock_socket.recv_multipart.side_effect = ((fake_meta, fake_data),)
+        MockContext.return_value.socket.return_value = mock_socket
+
+        # Mocking the update_signal to check if it gets emitted
+        eiger_plot_instance.update_signal = MagicMock()
+
+        with patch("zmq.Poller"):
+            # will do only 1 iteration of the loop in the thread
+            eiger_plot_instance._zmq_consumer_exit_event.set()
+            # Run the method under test
+            consumer_thread = eiger_plot_instance.start_zmq_consumer()
+            consumer_thread.join()
+
+        # Check if zmq methods are called
+        # MockContext.assert_called_once()
+        assert MockContext.call_count == 1
+        mock_socket.connect.assert_called_with("tcp://129.129.95.38:20000")
+        mock_socket.setsockopt_string.assert_called_with(zmq.SUBSCRIBE, "")
+        mock_socket.recv_multipart.assert_called()
+
+        # Check if update_signal was emitted
+        eiger_plot_instance.update_signal.emit.assert_called_once()
+
+        # Validate the image data
+        np.testing.assert_array_equal(
+            eiger_plot_instance.image, np.array([[1, 2], [3, 4]], dtype="int32")
+        )