tests added

docs/release_notes/next/featureE-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

@@ -56,3 +56,61 @@ 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_change_roi_color(self) -> None:
+        QTest.mouseClick(self.spectrum_window.addBtn, Qt.MouseButton.LeftButton)
+        QTest.qWait(SHORT_DELAY)
+
+        new_color = (255, 0, 0, 255)
+        self.spectrum_window.spectrum_widget.change_roi_colour('roi_1', new_color)
+
+        self.assertEqual(self.spectrum_window.spectrum_widget.roi_dict['roi_1'].colour, new_color)
+
+    def test_rename_roi(self) -> None:
+        QTest.mouseClick(self.spectrum_window.addBtn, Qt.MouseButton.LeftButton)
+        QTest.qWait(SHORT_DELAY)
+
+        old_name = 'roi_1'
+        new_name = 'roi_renamed'
+        self.spectrum_window.presenter.rename_roi(old_name, new_name)
+
+        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_name = self.spectrum_window.presenter.get_roi_names()[0]
+        roi = self.spectrum_window.presenter.model.get_roi(roi_name)
+        new_roi = roi.copy()
+        new_roi.left += 10
+        new_roi.top += 10
+        self.spectrum_window.presenter.model.set_roi(roi_name, new_roi)
+        self.spectrum_window.presenter.handle_roi_moved()
+        updated_roi = self.spectrum_window.presenter.model.get_roi(roi_name)
+        assert updated_roi.left == new_roi.left
+        assert updated_roi.top == new_roi.top
+
+    def test_reset_units_menu(self) -> None:
+        self.assertFalse(self.spectrum_window.tof_mode_select_group.isEnabled())
+
+        self.spectrum_window.presenter.handle_sample_change("sample_uuid")
+        self.assertTrue(self.spectrum_window.tof_mode_select_group.isEnabled())
+
+    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
+
+    def test_export_csv(self) -> None:
+        with mock.patch("mantidimaging.gui.windows.spectrum_viewer.view.QFileDialog.getSaveFileName",
+                        return_value=("test_output.csv", "CSV Files (*.csv)")):
+            self.spectrum_window.presenter.handle_export_csv()
+
+            with open("test_output.csv", "r") as file:
+                lines = file.readlines()
+                self.assertGreater(len(lines), 1)