Add System Tests for Spectrum Viewer Features

docs/release_notes/next/dev-2320-Enhance-System-Tests-for-Spectrum-Viewer

@@ -0,0 +1 @@
+2320: Enhance System Tests for Spectrum Viewer

mantidimaging/gui/test/gui_system_spectrum_test.py

@@ -6,8 +6,10 @@
 
 from PyQt5.QtCore import Qt
 from PyQt5.QtTest import QTest
+from PyQt5.QtGui import QColor
 
 from mantidimaging.gui.test.gui_system_base import GuiSystemBase, SHOW_DELAY, SHORT_DELAY
+from mantidimaging.gui.windows.spectrum_viewer.model import SpecType, SensibleROI
 from mantidimaging.test_helpers.qt_test_helpers import wait_until
 
 
@@ -56,3 +58,77 @@ def test_add_roi(self) -> None:
             self.assertEqual(final_roi_count, initial_roi_count + 1)
             self.assertIn(f'roi_{i}', self.spectrum_window.roi_table_model.roi_names())
             self.assertIn(f'roi_{i}', self.spectrum_window.spectrum_widget.roi_dict)
+
+    def test_remove_roi(self) -> None:
+        QTest.mouseClick(self.spectrum_window.addBtn, Qt.MouseButton.LeftButton)
+        QTest.qWait(SHORT_DELAY)
+        initial_roi_count = self.spectrum_window.roi_table_model.rowCount()
+
+        QTest.mouseClick(self.spectrum_window.removeBtn, Qt.MouseButton.LeftButton)
+        QTest.qWait(SHORT_DELAY)
+        final_roi_count = self.spectrum_window.roi_table_model.rowCount()
+
+        self.assertEqual(final_roi_count, initial_roi_count - 1)
+        self.assertNotIn(f'roi_{initial_roi_count - 1}', self.spectrum_window.roi_table_model.roi_names())
+        self.assertNotIn(f'roi_{initial_roi_count - 1}', self.spectrum_window.spectrum_widget.roi_dict)
+
+    def test_change_roi_color(self):
+        QTest.mouseClick(self.spectrum_window.addBtn, Qt.MouseButton.LeftButton)
+        QTest.qWait(SHORT_DELAY)
+
+        roi_name = 'roi_1'
+        new_color = (255, 0, 0, 255)
+
+        sensible_roi = SensibleROI(left=0, top=0, right=10, bottom=10)
+        self.spectrum_window.spectrum_widget.add_roi(sensible_roi, roi_name)
+
+        spec_roi = self.spectrum_window.spectrum_widget.roi_dict[roi_name]
+
+        with mock.patch.object(spec_roi, 'openColorDialog', return_value=QColor(*new_color)):
+            spec_roi.onChangeColor()
+
+        self.assertEqual(self.spectrum_window.spectrum_widget.roi_dict[roi_name].colour, new_color)
+
+    def test_rename_roi(self):
+        QTest.mouseClick(self.spectrum_window.addBtn, Qt.MouseButton.LeftButton)
+        QTest.qWait(SHORT_DELAY)
+
+        old_name = 'roi_1'
+        new_name = 'roi_renamed'
+
+        table_model = self.spectrum_window.roi_table_model
+        row = table_model.roi_names().index(old_name)
+
+        table_model.set_element(row, 0, new_name)
+        table_model.dataChanged.emit(table_model.index(row, 0), table_model.index(row, 0))
+
+        self.assertNotIn(old_name, self.spectrum_window.spectrum_widget.roi_dict)
+        self.assertIn(new_name, self.spectrum_window.spectrum_widget.roi_dict)
+
+    def test_adjust_roi(self):
+        QTest.mouseClick(self.spectrum_window.addBtn, Qt.MouseButton.LeftButton)
+        QTest.qWait(SHORT_DELAY)
+
+        roi_names = self.spectrum_window.presenter.get_roi_names()
+        roi_name = next(name for name in roi_names if name != 'all')
+        roi_widget = self.spectrum_window.spectrum_widget.roi_dict[roi_name]
+        handle_index = 0
+        new_position = (10, 20)
+
+        roi_widget.movePoint(handle_index, new_position)
+        QTest.qWait(SHORT_DELAY)
+
+        updated_roi = self.spectrum_window.presenter.model.get_roi(roi_name)
+        self.assertEqual(updated_roi.right, new_position[0])
+        self.assertEqual(updated_roi.bottom, new_position[1])
+        self.assertEqual(updated_roi.top, 0)
+        self.assertEqual(updated_roi.left, 0)
+
+    def test_normalisation_toggle(self):
+        self.spectrum_window.normaliseCheckBox.setCheckState(Qt.CheckState.Checked)
+        QTest.qWait(SHORT_DELAY)
+        assert self.spectrum_window.presenter.spectrum_mode == SpecType.SAMPLE_NORMED
+
+        self.spectrum_window.normaliseCheckBox.setCheckState(Qt.CheckState.Unchecked)
+        QTest.qWait(SHORT_DELAY)
+        assert self.spectrum_window.presenter.spectrum_mode == SpecType.SAMPLE