Exemple #1
0
class LoadRunWidgetIncrementDecrementMultipleFileModeTest(GuiTest):
    def run_test_with_and_without_threading(test_function):
        def run_twice(self):
            test_function(self)
            self.setUp()
            self.presenter._use_threading = False
            test_function(self)

        return run_twice

    def wait_for_thread(self, thread_model):
        if thread_model:
            thread_model._thread.wait()
            QApplication.instance().processEvents()

    def setUp(self):
        # Store an empty widget to parent all the views, and ensure they are deleted correctly
        self.obj = QWidget()

        setup_context_for_tests(self)

        self.data_context.instrument = 'EMU'

        self.view = LoadRunWidgetView(self.obj)
        self.model = LoadRunWidgetModel(self.loaded_data, self.context)
        self.presenter = LoadRunWidgetPresenter(self.view, self.model)

        self.view.warning_popup = mock.Mock()

        self.presenter.set_current_instrument("EMU")

        patcher = mock.patch('Muon.GUI.Common.load_run_widget.load_run_model.load_utils')
        self.addCleanup(patcher.stop)
        self.load_utils_patcher = patcher.start()
        self.load_utils_patcher.exception_message_for_failed_files.return_value = ''

    def tearDown(self):
        self.obj = None

    def load_runs(self, runs, filenames, workspaces):
        self.load_utils_patcher.load_workspace_from_filename = mock.Mock(
            side_effect=iter(zip(workspaces, runs, filenames, [False] * len(filenames))))
        run_string = ",".join([str(run) for run in runs])
        self.view.set_run_edit_text(run_string)
        self.presenter.handle_run_changed_by_user()
        self.wait_for_thread(self.presenter._load_thread)

    def assert_model_empty(self):
        self.assertEqual(self.model.loaded_filenames, [])
        self.assertEqual(self.model.loaded_workspaces, [])
        self.assertEqual(self.model.loaded_runs, [])

    def assert_view_empty(self):
        self.assertEqual(self.view.get_run_edit_text(), "")

    def load_failure(self):
        raise ValueError("Error text")

    # ------------------------------------------------------------------------------------------------------------------
    # TESTS : Test the increment/decrement run buttons in "multiple file" mode
    # ------------------------------------------------------------------------------------------------------------------

    @run_test_with_and_without_threading
    def test_that_providing_no_runs_leaves_model_and_view_empty(self):
        self.view.set_run_edit_text("")
        self.presenter.handle_run_changed_by_user()
        self.wait_for_thread(self.presenter._load_thread)

        self.assert_view_empty()
        self.assert_model_empty()

    @run_test_with_and_without_threading
    def test_that_increment_run_does_nothing_if_no_runs_loaded(self):
        self.presenter.handle_increment_run()
        self.wait_for_thread(self.presenter._load_thread)

        self.assert_view_empty()
        self.assert_model_empty()

    @run_test_with_and_without_threading
    def test_that_decrement_run_does_nothing_if_no_runs_loaded(self):
        self.presenter.handle_decrement_run()
        self.wait_for_thread(self.presenter._load_thread)

        self.assert_view_empty()
        self.assert_model_empty()

    @run_test_with_and_without_threading
    def test_that_decrement_run_decrements_the_upper_end_of_the_range_of_loaded_runs(self):
        self.load_runs([2, 3, 4], ["file2.nxs", "file3.nxs", "file4.nxs"], [[2], [3], [4]])
        self.load_utils_patcher.load_workspace_from_filename = mock.Mock(return_value=([1], 1, "file1.nxs", False))

        self.presenter.handle_decrement_run()
        self.wait_for_thread(self.presenter._load_thread)

        six.assertCountEqual(self, self.model.loaded_filenames, ["file1.nxs", "file2.nxs", "file3.nxs", "file4.nxs"])
        six.assertCountEqual(self, self.model.loaded_workspaces, [[1], [2], [3], [4]])
        six.assertCountEqual(self, self.model.loaded_runs, [[1], [2], [3], [4]])

        self.assertEqual(self.view.get_run_edit_text(), "1")

    @run_test_with_and_without_threading
    def test_that_increment_run_increments_the_lower_end_of_the_range_of_loaded_runs(self):
        self.load_runs([2, 3, 4], ["file2.nxs", "file3.nxs", "file4.nxs"], [[2], [3], [4]])
        self.load_utils_patcher.load_workspace_from_filename = mock.Mock(return_value=([5], 5, "file5.nxs", False))

        self.presenter.handle_increment_run()
        self.wait_for_thread(self.presenter._load_thread)

        six.assertCountEqual(self, self.model.loaded_filenames, ["file2.nxs", "file3.nxs", "file4.nxs", "file5.nxs"])
        six.assertCountEqual(self, self.model.loaded_workspaces, [[2], [3], [4], [5]])
        six.assertCountEqual(self, self.model.loaded_runs, [[2], [3], [4], [5]])

        self.assertEqual(self.view.get_run_edit_text(), "5")

    @run_test_with_and_without_threading
    def test_that_if_decrement_run_fails_the_data_are_returned_to_previous_state(self):

        self.load_runs([2, 3, 4], ["file2.nxs", "file3.nxs", "file4.nxs"], [[2], [3], [4]])
        self.load_utils_patcher.load_workspace_from_filename = mock.Mock(side_effect=self.load_failure)

        self.presenter.handle_decrement_run()
        self.wait_for_thread(self.presenter._load_thread)

        six.assertCountEqual(self, self.model.loaded_filenames, ["file2.nxs", "file3.nxs", "file4.nxs"])
        six.assertCountEqual(self, self.model.loaded_workspaces, [[2], [3], [4]])
        six.assertCountEqual(self, self.model.loaded_runs, [[2], [3], [4]])

        self.assertEqual(self.view.get_run_edit_text(), '2-4')

    @run_test_with_and_without_threading
    def test_that_if_increment_run_fails_the_data_are_returned_to_previous_state(self):

        self.load_runs([2, 3, 4], ["file2.nxs", "file3.nxs", "file4.nxs"], [[2], [3], [4]])
        self.load_utils_patcher.load_workspace_from_filename = mock.Mock(side_effect=self.load_failure)

        self.presenter.handle_increment_run()
        self.wait_for_thread(self.presenter._load_thread)

        six.assertCountEqual(self, self.model.loaded_filenames, ["file2.nxs", "file3.nxs", "file4.nxs"])
        six.assertCountEqual(self, self.model.loaded_workspaces, [[2], [3], [4]])
        six.assertCountEqual(self, self.model.loaded_runs, [[2], [3], [4]])

        self.assertEqual(self.view.get_run_edit_text(), '2-4')

    @run_test_with_and_without_threading
    def test_that_if_increment_run_fails_warning_message_is_displayed(self):
        self.load_runs([2, 3, 4], ["file2.nxs", "file3.nxs", "file4.nxs"], [[2], [3], [4]])
        self.load_utils_patcher.load_workspace_from_filename = mock.Mock(side_effect=self.load_failure)

        self.presenter.handle_increment_run()
        self.wait_for_thread(self.presenter._load_thread)

        self.assertEqual(self.view.warning_popup.call_count, 1)

    @run_test_with_and_without_threading
    def test_that_if_decrement_run_fails_warning_message_is_displayed(self):
        self.load_runs([2, 3, 4], ["file2.nxs", "file3.nxs", "file4.nxs"], [[2], [3], [4]])
        self.load_utils_patcher.load_workspace_from_filename = mock.Mock(side_effect=self.load_failure)

        self.presenter.handle_decrement_run()
        self.wait_for_thread(self.presenter._load_thread)

        self.assertEqual(self.view.warning_popup.call_count, 1)
class LoadRunWidgetIncrementDecrementMultipleFileModeTest(unittest.TestCase):
    def run_test_with_and_without_threading(test_function):
        def run_twice(self):
            test_function(self)
            self.setUp()
            self.presenter._use_threading = False
            test_function(self)

        return run_twice

    def wait_for_thread(self, thread_model):
        if thread_model:
            thread_model._thread.wait()
            self._qapp.processEvents()

    def setUp(self):
        self._qapp = mock_widget.mockQapp()
        # Store an empty widget to parent all the views, and ensure they are deleted correctly
        self.obj = QtGui.QWidget()

        setup_context_for_tests(self)

        self.data_context.instrument = 'EMU'

        self.view = LoadRunWidgetView(self.obj)
        self.model = LoadRunWidgetModel(self.loaded_data, self.context)
        self.presenter = LoadRunWidgetPresenter(self.view, self.model)

        self.view.warning_popup = mock.Mock()

        self.presenter.set_current_instrument("EMU")

        patcher = mock.patch('Muon.GUI.Common.load_run_widget.load_run_model.load_utils')
        self.addCleanup(patcher.stop)
        self.load_utils_patcher = patcher.start()
        self.load_utils_patcher.exception_message_for_failed_files.return_value = ''

    def tearDown(self):
        self.obj = None

    def load_runs(self, runs, filenames, workspaces):
        self.load_utils_patcher.load_workspace_from_filename = mock.Mock(
            side_effect=iter(zip(workspaces, runs, filenames)))
        run_string = ",".join([str(run) for run in runs])
        self.view.set_run_edit_text(run_string)
        self.presenter.handle_run_changed_by_user()
        self.wait_for_thread(self.presenter._load_thread)

    def assert_model_empty(self):
        self.assertEqual(self.model.loaded_filenames, [])
        self.assertEqual(self.model.loaded_workspaces, [])
        self.assertEqual(self.model.loaded_runs, [])

    def assert_view_empty(self):
        self.assertEqual(self.view.get_run_edit_text(), "")

    def load_failure(self):
        raise ValueError("Error text")

    # ------------------------------------------------------------------------------------------------------------------
    # TESTS : Test the increment/decrement run buttons in "multiple file" mode
    # ------------------------------------------------------------------------------------------------------------------

    @run_test_with_and_without_threading
    def test_that_providing_no_runs_leaves_model_and_view_empty(self):
        self.view.set_run_edit_text("")
        self.presenter.handle_run_changed_by_user()
        self.wait_for_thread(self.presenter._load_thread)

        self.assert_view_empty()
        self.assert_model_empty()

    @run_test_with_and_without_threading
    def test_that_increment_run_does_nothing_if_no_runs_loaded(self):
        self.presenter.handle_increment_run()
        self.wait_for_thread(self.presenter._load_thread)

        self.assert_view_empty()
        self.assert_model_empty()

    @run_test_with_and_without_threading
    def test_that_decrement_run_does_nothing_if_no_runs_loaded(self):
        self.presenter.handle_decrement_run()
        self.wait_for_thread(self.presenter._load_thread)

        self.assert_view_empty()
        self.assert_model_empty()

    @run_test_with_and_without_threading
    def test_that_decrement_run_decrements_the_upper_end_of_the_range_of_loaded_runs(self):
        self.load_runs([2, 3, 4], ["file2.nxs", "file3.nxs", "file4.nxs"], [[2], [3], [4]])
        self.load_utils_patcher.load_workspace_from_filename = mock.Mock(return_value=([1], 1, "file1.nxs"))

        self.presenter.handle_decrement_run()
        self.wait_for_thread(self.presenter._load_thread)

        six.assertCountEqual(self, self.model.loaded_filenames, ["file1.nxs", "file2.nxs", "file3.nxs", "file4.nxs"])
        six.assertCountEqual(self, self.model.loaded_workspaces, [[1], [2], [3], [4]])
        six.assertCountEqual(self, self.model.loaded_runs, [[1], [2], [3], [4]])

        self.assertEqual(self.view.get_run_edit_text(), "1")

    @run_test_with_and_without_threading
    def test_that_increment_run_increments_the_lower_end_of_the_range_of_loaded_runs(self):
        self.load_runs([2, 3, 4], ["file2.nxs", "file3.nxs", "file4.nxs"], [[2], [3], [4]])
        self.load_utils_patcher.load_workspace_from_filename = mock.Mock(return_value=([5], 5, "file5.nxs"))

        self.presenter.handle_increment_run()
        self.wait_for_thread(self.presenter._load_thread)

        six.assertCountEqual(self, self.model.loaded_filenames, ["file2.nxs", "file3.nxs", "file4.nxs", "file5.nxs"])
        six.assertCountEqual(self, self.model.loaded_workspaces, [[2], [3], [4], [5]])
        six.assertCountEqual(self, self.model.loaded_runs, [[2], [3], [4], [5]])

        self.assertEqual(self.view.get_run_edit_text(), "5")

    @run_test_with_and_without_threading
    def test_that_if_decrement_run_fails_the_data_are_returned_to_previous_state(self):

        self.load_runs([2, 3, 4], ["file2.nxs", "file3.nxs", "file4.nxs"], [[2], [3], [4]])
        self.load_utils_patcher.load_workspace_from_filename = mock.Mock(side_effect=self.load_failure)

        self.presenter.handle_decrement_run()
        self.wait_for_thread(self.presenter._load_thread)

        six.assertCountEqual(self, self.model.loaded_filenames, ["file2.nxs", "file3.nxs", "file4.nxs"])
        six.assertCountEqual(self, self.model.loaded_workspaces, [[2], [3], [4]])
        six.assertCountEqual(self, self.model.loaded_runs, [[2], [3], [4]])

        self.assertEqual(self.view.get_run_edit_text(), "")

    @run_test_with_and_without_threading
    def test_that_if_increment_run_fails_the_data_are_returned_to_previous_state(self):

        self.load_runs([2, 3, 4], ["file2.nxs", "file3.nxs", "file4.nxs"], [[2], [3], [4]])
        self.load_utils_patcher.load_workspace_from_filename = mock.Mock(side_effect=self.load_failure)

        self.presenter.handle_increment_run()
        self.wait_for_thread(self.presenter._load_thread)

        six.assertCountEqual(self, self.model.loaded_filenames, ["file2.nxs", "file3.nxs", "file4.nxs"])
        six.assertCountEqual(self, self.model.loaded_workspaces, [[2], [3], [4]])
        six.assertCountEqual(self, self.model.loaded_runs, [[2], [3], [4]])

        self.assertEqual(self.view.get_run_edit_text(), "")

    @run_test_with_and_without_threading
    def test_that_if_increment_run_fails_warning_message_is_displayed(self):
        self.load_runs([2, 3, 4], ["file2.nxs", "file3.nxs", "file4.nxs"], [[2], [3], [4]])
        self.load_utils_patcher.load_workspace_from_filename = mock.Mock(side_effect=self.load_failure)

        self.presenter.handle_increment_run()
        self.wait_for_thread(self.presenter._load_thread)

        self.assertEqual(self.view.warning_popup.call_count, 1)

    @run_test_with_and_without_threading
    def test_that_if_decrement_run_fails_warning_message_is_displayed(self):
        self.load_runs([2, 3, 4], ["file2.nxs", "file3.nxs", "file4.nxs"], [[2], [3], [4]])
        self.load_utils_patcher.load_workspace_from_filename = mock.Mock(side_effect=self.load_failure)

        self.presenter.handle_decrement_run()
        self.wait_for_thread(self.presenter._load_thread)

        self.assertEqual(self.view.warning_popup.call_count, 1)
class LoadRunWidgetIncrementDecrementSingleFileModeTest(unittest.TestCase):
    def run_test_with_and_without_threading(test_function):
        def run_twice(self):
            test_function(self)
            self.setUp()
            self.presenter._use_threading = False
            test_function(self)

        return run_twice

    def wait_for_thread(self, thread_model):
        if thread_model:
            thread_model._thread.wait()
            QApplication.instance().processEvents()

    def setUp(self):
        # Store an empty widget to parent all the views, and ensure they are deleted correctly
        self.obj = QWidget()

        setup_context_for_tests(self)

        self.view = LoadRunWidgetView(parent=self.obj)
        self.model = LoadRunWidgetModel(self.loaded_data, self.context)
        self.presenter = LoadRunWidgetPresenter(self.view, self.model)

        self.view.warning_popup = mock.Mock()
        self.presenter.set_current_instrument("EMU")

        patcher = mock.patch(
            'Muon.GUI.Common.load_run_widget.load_run_model.load_utils')
        self.addCleanup(patcher.stop)
        self.load_utils_patcher = patcher.start()
        self.load_utils_patcher.exception_message_for_failed_files.return_value = ''

        file_finder_patcher = mock.patch(
            'Muon.GUI.Common.load_run_widget.load_run_presenter.FileFinder')
        self.addCleanup(file_finder_patcher.stop)
        file_finder_patcher.start()

        self.load_single_run()

    def tearDown(self):
        self.obj = None

    def load_single_run(self):
        self._loaded_run = 1234
        self._loaded_filename = "EMU00001234.nxs"
        self._loaded_workspace = {'MainFieldDirection': 'transverse'}

        self.load_utils_patcher.load_workspace_from_filename = mock.Mock(
            return_value=(self._loaded_workspace, self._loaded_run,
                          self._loaded_filename, False))
        self.view.set_run_edit_text(str(self._loaded_run))
        self.presenter.handle_run_changed_by_user()
        self.wait_for_thread(self.presenter._load_thread)

    def assert_model_has_not_changed(self):
        self.assertEqual(self.model.loaded_workspaces,
                         [self._loaded_workspace])
        self.assertEqual(self.model.loaded_runs, [[self._loaded_run]])
        self.assertEqual(self.model.loaded_filenames, [self._loaded_filename])

    def assert_view_has_not_changed(self):
        self.assertEqual(self.view.get_run_edit_text(), str(self._loaded_run))

    def load_failure(self):
        raise ValueError("Error text")

    def mock_model_to_throw(self):
        self.model.load_workspace_from_filename = mock.Mock(
            side_effect=self.load_failure)

    # ------------------------------------------------------------------------------------------------------------------
    # TESTS : Test the increment/decrement buttons in single file mode (can only load one run at a time)
    # ------------------------------------------------------------------------------------------------------------------

    @run_test_with_and_without_threading
    def test_that_decrement_run_attempts_to_load_the_correct_run(self):
        new_filename = "EMU00001233.nxs"
        load_call_count = self.load_utils_patcher.load_workspace_from_filename.call_count

        self.presenter.handle_decrement_run()
        self.wait_for_thread(self.presenter._load_thread)

        self.assertEqual(
            self.load_utils_patcher.load_workspace_from_filename.call_count,
            load_call_count + 1)
        filename = self.load_utils_patcher.load_workspace_from_filename.call_args[
            0][0]
        self.assertEqual(os.path.basename(filename), new_filename)

    @run_test_with_and_without_threading
    def test_that_increment_run_attempts_to_load_the_correct_run(self):
        new_filename = "EMU00001235.nxs"
        load_call_count = self.load_utils_patcher.load_workspace_from_filename.call_count

        self.presenter.handle_increment_run()
        self.wait_for_thread(self.presenter._load_thread)

        self.assertEqual(
            self.load_utils_patcher.load_workspace_from_filename.call_count,
            load_call_count + 1)
        filename = self.load_utils_patcher.load_workspace_from_filename.call_args[
            0][0]
        self.assertEqual(os.path.basename(filename), new_filename)

    @run_test_with_and_without_threading
    def test_that_decrement_run_loads_the_data_correctly(self):
        new_run = self._loaded_run - 1
        new_filename = "EMU00001233.nxs"
        self.load_utils_patcher.load_workspace_from_filename = mock.Mock(
            return_value=({
                'MainFieldDirection': 'transverse'
            }, new_run, new_filename, False))

        self.presenter.handle_decrement_run()
        self.wait_for_thread(self.presenter._load_thread)

        self.assertEqual(self.presenter.filenames,
                         [self._loaded_filename, new_filename])
        self.assertEqual(self.presenter.runs, [[self._loaded_run], [new_run]])
        self.assertEqual(
            self.presenter.workspaces,
            [self._loaded_workspace, {
                'MainFieldDirection': 'transverse'
            }])

        self.assertEqual(self.view.get_run_edit_text(), '1233')

    @run_test_with_and_without_threading
    def test_that_increment_run_loads_the_data_correctly(self):
        new_run = self._loaded_run + 1
        new_filename = "EMU00001235.nxs"
        self.load_utils_patcher.load_workspace_from_filename = mock.Mock(
            return_value=({
                'MainFieldDirection': 'transverse'
            }, new_run, new_filename, False))

        self.presenter.handle_increment_run()
        self.wait_for_thread(self.presenter._load_thread)

        self.assertEqual(self.presenter.filenames,
                         [self._loaded_filename, new_filename])
        self.assertEqual(self.presenter.runs, [[self._loaded_run], [new_run]])
        self.assertEqual(
            self.presenter.workspaces,
            [self._loaded_workspace, {
                'MainFieldDirection': 'transverse'
            }])

        self.assertEqual(self.view.get_run_edit_text(), '1235')

    @run_test_with_and_without_threading
    def test_that_if_decrement_run_fails_the_data_are_returned_to_previous_state(
            self):
        self.load_utils_patcher.load_workspace_from_filename = mock.Mock(
            side_effect=self.load_failure)

        self.presenter.handle_decrement_run()
        self.wait_for_thread(self.presenter._load_thread)

        self.assert_model_has_not_changed()
        self.assertEqual(self.view.get_run_edit_text(), '1234')

    @run_test_with_and_without_threading
    def test_that_if_increment_run_fails_the_data_are_returned_to_previous_state(
            self):
        self.load_utils_patcher.load_workspace_from_filename = mock.Mock(
            side_effect=self.load_failure)

        self.presenter.handle_increment_run()
        self.wait_for_thread(self.presenter._load_thread)

        self.assert_model_has_not_changed()
        self.assertEqual(self.view.get_run_edit_text(), '1234')

    @run_test_with_and_without_threading
    def test_that_if_decrement_run_fails_warning_message_is_displayed(self):
        self.load_utils_patcher.load_workspace_from_filename = mock.Mock(
            side_effect=self.load_failure)

        self.presenter.handle_decrement_run()
        self.wait_for_thread(self.presenter._load_thread)

        self.assertEqual(self.view.warning_popup.call_count, 1)

    @run_test_with_and_without_threading
    def test_that_if_increment_run_fails_warning_message_is_displayed(self):
        self.load_utils_patcher.load_workspace_from_filename = mock.Mock(
            side_effect=self.load_failure)

        self.presenter.handle_increment_run()
        self.wait_for_thread(self.presenter._load_thread)

        self.assertEqual(self.view.warning_popup.call_count, 1)
class LoadRunWidgetIncrementDecrementSingleFileModeTest(unittest.TestCase):
    def run_test_with_and_without_threading(test_function):
        def run_twice(self):
            test_function(self)
            self.setUp()
            self.presenter._use_threading = False
            test_function(self)

        return run_twice

    def wait_for_thread(self, thread_model):
        if thread_model:
            thread_model._thread.wait()
            self._qapp.processEvents()

    def setUp(self):
        self._qapp = mock_widget.mockQapp()
        # Store an empty widget to parent all the views, and ensure they are deleted correctly
        self.obj = QtGui.QWidget()

        setup_context_for_tests(self)

        self.view = LoadRunWidgetView(parent=self.obj)
        self.model = LoadRunWidgetModel(self.loaded_data, self.context)
        self.presenter = LoadRunWidgetPresenter(self.view, self.model)

        self.view.warning_popup = mock.Mock()
        self.presenter.set_current_instrument("EMU")

        patcher = mock.patch('Muon.GUI.Common.load_run_widget.load_run_model.load_utils')
        self.addCleanup(patcher.stop)
        self.load_utils_patcher = patcher.start()
        self.load_utils_patcher.exception_message_for_failed_files.return_value = ''

        self.load_single_run()

    def tearDown(self):
        self.obj = None

    def load_single_run(self):
        self._loaded_run = 1234
        self._loaded_filename = "EMU00001234.nxs"
        self._loaded_workspace = {'MainFieldDirection': 'transverse'}

        self.load_utils_patcher.load_workspace_from_filename = mock.Mock(
            return_value=(self._loaded_workspace, self._loaded_run, self._loaded_filename))
        self.view.set_run_edit_text(str(self._loaded_run))
        self.presenter.handle_run_changed_by_user()
        self.wait_for_thread(self.presenter._load_thread)

    def assert_model_has_not_changed(self):
        self.assertEqual(self.model.loaded_workspaces, [self._loaded_workspace])
        self.assertEqual(self.model.loaded_runs, [[self._loaded_run]])
        self.assertEqual(self.model.loaded_filenames, [self._loaded_filename])

    def assert_view_has_not_changed(self):
        self.assertEqual(self.view.get_run_edit_text(), str(self._loaded_run))

    def load_failure(self):
        raise ValueError("Error text")

    def mock_model_to_throw(self):
        self.model.load_workspace_from_filename = mock.Mock(side_effect=self.load_failure)

    # ------------------------------------------------------------------------------------------------------------------
    # TESTS : Test the increment/decrement buttons in single file mode (can only load one run at a time)
    # ------------------------------------------------------------------------------------------------------------------

    @run_test_with_and_without_threading
    def test_that_decrement_run_attempts_to_load_the_correct_run(self):
        new_filename = "EMU00001233.nxs"
        load_call_count = self.load_utils_patcher.load_workspace_from_filename.call_count

        self.presenter.handle_decrement_run()
        self.wait_for_thread(self.presenter._load_thread)

        self.assertEqual(self.load_utils_patcher.load_workspace_from_filename.call_count, load_call_count + 1)
        filename = self.load_utils_patcher.load_workspace_from_filename.call_args[0][0]
        self.assertEqual(os.path.basename(filename), new_filename)

    @run_test_with_and_without_threading
    def test_that_increment_run_attempts_to_load_the_correct_run(self):
        new_filename = "EMU00001235.nxs"
        load_call_count = self.load_utils_patcher.load_workspace_from_filename.call_count

        self.presenter.handle_increment_run()
        self.wait_for_thread(self.presenter._load_thread)

        self.assertEqual(self.load_utils_patcher.load_workspace_from_filename.call_count, load_call_count + 1)
        filename = self.load_utils_patcher.load_workspace_from_filename.call_args[0][0]
        self.assertEqual(os.path.basename(filename), new_filename)

    @run_test_with_and_without_threading
    def test_that_decrement_run_loads_the_data_correctly(self):
        new_run = self._loaded_run - 1
        new_filename = "EMU00001233.nxs"
        self.load_utils_patcher.load_workspace_from_filename = mock.Mock(return_value=({'MainFieldDirection': 'transverse'}, new_run, new_filename))

        self.presenter.handle_decrement_run()
        self.wait_for_thread(self.presenter._load_thread)

        self.assertEqual(self.presenter.filenames, [self._loaded_filename, new_filename])
        self.assertEqual(self.presenter.runs, [[self._loaded_run], [new_run]])
        self.assertEqual(self.presenter.workspaces, [self._loaded_workspace, {'MainFieldDirection': 'transverse'}])

        self.assertEqual(self.view.get_run_edit_text(), '1233')

    @run_test_with_and_without_threading
    def test_that_increment_run_loads_the_data_correctly(self):
        new_run = self._loaded_run + 1
        new_filename = "EMU00001235.nxs"
        self.load_utils_patcher.load_workspace_from_filename = mock.Mock(return_value=({'MainFieldDirection': 'transverse'}, new_run, new_filename))

        self.presenter.handle_increment_run()
        self.wait_for_thread(self.presenter._load_thread)

        self.assertEqual(self.presenter.filenames, [self._loaded_filename, new_filename])
        self.assertEqual(self.presenter.runs, [[self._loaded_run], [new_run]])
        self.assertEqual(self.presenter.workspaces, [self._loaded_workspace, {'MainFieldDirection': 'transverse'}])

        self.assertEqual(self.view.get_run_edit_text(), '1235')

    @run_test_with_and_without_threading
    def test_that_if_decrement_run_fails_the_data_are_returned_to_previous_state(self):
        self.load_utils_patcher.load_workspace_from_filename = mock.Mock(side_effect=self.load_failure)

        self.presenter.handle_decrement_run()
        self.wait_for_thread(self.presenter._load_thread)

        self.assert_model_has_not_changed()
        self.assertEqual(self.view.get_run_edit_text(), '')

    @run_test_with_and_without_threading
    def test_that_if_increment_run_fails_the_data_are_returned_to_previous_state(self):
        self.load_utils_patcher.load_workspace_from_filename = mock.Mock(side_effect=self.load_failure)

        self.presenter.handle_increment_run()
        self.wait_for_thread(self.presenter._load_thread)

        self.assert_model_has_not_changed()
        self.assertEqual(self.view.get_run_edit_text(), '')

    @run_test_with_and_without_threading
    def test_that_if_decrement_run_fails_warning_message_is_displayed(self):
        self.load_utils_patcher.load_workspace_from_filename = mock.Mock(side_effect=self.load_failure)

        self.presenter.handle_decrement_run()
        self.wait_for_thread(self.presenter._load_thread)

        self.assertEqual(self.view.warning_popup.call_count, 1)

    @run_test_with_and_without_threading
    def test_that_if_increment_run_fails_warning_message_is_displayed(self):
        self.load_utils_patcher.load_workspace_from_filename = mock.Mock(side_effect=self.load_failure)

        self.presenter.handle_increment_run()
        self.wait_for_thread(self.presenter._load_thread)

        self.assertEqual(self.view.warning_popup.call_count, 1)