diff --git a/meggie/actions/epochs_delete_from_all/tests/test_epochs_delete_from_all.py b/meggie/actions/epochs_delete_from_all/tests/test_epochs_delete_from_all.py
new file mode 100644
index 00000000..f1b677e8
--- /dev/null
+++ b/meggie/actions/epochs_delete_from_all/tests/test_epochs_delete_from_all.py
@@ -0,0 +1,15 @@
+from meggie.utilities.testing import BaseTestAction
+from meggie.actions.epochs_delete_from_all import DeleteEpochsFromAll
+
+
+class TestEpochsDeleteFromAll(BaseTestAction):
+    def test_epochs_delete_from_all(self):
+
+        data = {"outputs": {"epochs": ["Epochs"]}}
+
+        self.run_action(
+            action_name="epochs_delete_from_all",
+            handler=DeleteEpochsFromAll,
+            data=data,
+            patch_paths=["meggie.actions.epochs_delete_from_all"],
+        )
diff --git a/meggie/actions/epochs_info/tests/test_epochs_info.py b/meggie/actions/epochs_info/tests/test_epochs_info.py
new file mode 100644
index 00000000..f2dede89
--- /dev/null
+++ b/meggie/actions/epochs_info/tests/test_epochs_info.py
@@ -0,0 +1,16 @@
+from meggie.utilities.testing import BaseTestAction
+from meggie.actions.epochs_info import Info
+
+
+class TestEpochsInfo(BaseTestAction):
+    def test_epochs_info(self):
+
+        data = {"outputs": {"epochs": ["Epochs"]}}
+
+        content = self.run_action(
+            action_name="epochs_info",
+            handler=Info,
+            data=data,
+            patch_paths=["meggie.actions.epochs_info"],
+        )
+        assert content
diff --git a/meggie/actions/epochs_plot/tests/test_epochs_plot.py b/meggie/actions/epochs_plot/tests/test_epochs_plot.py
new file mode 100644
index 00000000..b8230b3c
--- /dev/null
+++ b/meggie/actions/epochs_plot/tests/test_epochs_plot.py
@@ -0,0 +1,15 @@
+from meggie.utilities.testing import BaseTestAction
+from meggie.actions.epochs_plot import PlotEpochs
+
+
+class TestPlotEpochs(BaseTestAction):
+    def test_epochs_plot(self):
+
+        data = {"outputs": {"epochs": ["Epochs"]}}
+
+        self.run_action(
+            action_name="epochs_plot",
+            handler=PlotEpochs,
+            data=data,
+            patch_paths=["meggie.actions.epochs_plot"],
+        )
diff --git a/meggie/actions/epochs_plot_image/tests/test_epochs_plot_image.py b/meggie/actions/epochs_plot_image/tests/test_epochs_plot_image.py
new file mode 100644
index 00000000..74c02646
--- /dev/null
+++ b/meggie/actions/epochs_plot_image/tests/test_epochs_plot_image.py
@@ -0,0 +1,15 @@
+from meggie.utilities.testing import BaseTestAction
+from meggie.actions.epochs_plot_image import PlotEpochsImage
+
+
+class TestPlotEpochsImage(BaseTestAction):
+    def test_epochs_plot_image(self):
+
+        data = {"outputs": {"epochs": ["Epochs"]}}
+
+        self.run_action(
+            action_name="epochs_plot_image",
+            handler=PlotEpochsImage,
+            data=data,
+            patch_paths=["meggie.actions.epochs_plot_image"],
+        )
diff --git a/meggie/utilities/generate_experiments.py b/meggie/utilities/generate_experiments.py
index 91f02080..ec1d70a9 100644
--- a/meggie/utilities/generate_experiments.py
+++ b/meggie/utilities/generate_experiments.py
@@ -155,10 +155,25 @@ def create_test_experiment(experiment_folder, experiment_name, n_subjects=2):
         stim_channel = find_stim_channel(raw)
         events = find_events(raw, stim_channel)
 
-        mne_epochs = mne.Epochs(raw, events, {"1": 1, "2": 2}, -0.1, 0.2)
+        params = {
+            "tmin": -0.1,
+            "tmax": 0.2,
+            "bstart": -0.1,
+            "bend": 0.2,
+        }
+        category = {"1": 1, "2": 2}
+
+        mne_epochs = mne.Epochs(
+            raw,
+            events,
+            category,
+            tmin=params["tmin"],
+            tmax=params["tmax"],
+            baseline=(params["bstart"], params["bend"]),
+        )
 
         epochs_directory = subject.epochs_directory
-        epochs = Epochs("Epochs", epochs_directory, {}, content=mne_epochs)
+        epochs = Epochs("Epochs", epochs_directory, params, content=mne_epochs)
         epochs.save_content()
         subject.add(epochs, "epochs")
 
diff --git a/meggie/utilities/testing.py b/meggie/utilities/testing.py
index 229b9dab..98a8fa16 100644
--- a/meggie/utilities/testing.py
+++ b/meggie/utilities/testing.py
@@ -1,4 +1,5 @@
 import tempfile
+import logging
 import importlib
 import pytest
 import json
@@ -40,6 +41,10 @@ def patched_exc_messagebox(parent, exc, exec_=False):
     raise exc
 
 
+def patched_logger_exception(msg):
+    raise Exception(msg)
+
+
 class BaseTestAction:
     @pytest.fixture(autouse=True)
     def setup_common(self, qtbot, monkeypatch):
@@ -58,6 +63,20 @@ def setup_experiment(self):
 
     def run_action(self, action_name, handler, data={}, patch_paths=[]):
 
+        # patch mne's plt_show to not show plots
+        utils = importlib.import_module("mne.viz.utils")
+        epochs = importlib.import_module("mne.viz.epochs")
+
+        def patched_plt_show(*args, **kwargs):
+            utils.plt_show(show=False, fig=None, **kwargs)
+
+        self.monkeypatch.setattr(epochs, "plt_show", patched_plt_show)
+
+        # patch logger to raise exceptions
+        logger = logging.getLogger("ui_logger")
+        self.monkeypatch.setattr(logger, "exception", patched_logger_exception)
+
+        # patch messageboxes to raise exceptions
         for patch_path in patch_paths:
             module = importlib.import_module(patch_path)
 
@@ -73,13 +92,14 @@ def run_action(self, action_name, handler, data={}, patch_paths=[]):
                     patched_messagebox,
                 )
 
+        # call the action handler
         merged_data = {"tab_id": "test_tab"}
         merged_data.update(data)
         action_spec = load_action_spec(action_name)
         self.action_instance = handler(
             self.experiment, merged_data, self.mock_main_window, action_spec
         )
-        self.action_instance.run()
+        return self.action_instance.run()
 
     def find_dialog(self, dialog_class):
         dialog = None