diff --git a/tests/gui/test_actions.py b/tests/gui/test_actions.py
new file mode 100644
index 0000000..5bc7f21
--- /dev/null
+++ b/tests/gui/test_actions.py
@@ -0,0 +1,59 @@
+import time
+import tkinter as tk
+from typing import Iterable, Optional
+from unittest.mock import patch
+
+import pytest
+
+from countess.gui.main import MainWindow, make_root, PluginChooserFrame
+from countess.gui.config import PluginConfigurator
+from countess.gui.tabular import TabularDataFrame
+from countess.plugins.csv import LoadCsvPlugin
+
+def _find_buttons(frame: tk.Frame, label: str) -> Iterable[tk.Button]:
+
+    for w in frame.winfo_children():
+        if isinstance(w, tk.Button):
+            if w['text'] == label:
+                yield w
+        elif isinstance(w, (tk.Frame, tk.LabelFrame)):
+            yield from _find_buttons(w, label)
+
+def _find_button(frame: tk.Frame, label: str) -> Optional[tk.Button]:
+    try:
+        return next(iter(_find_buttons(frame, label)))
+    except StopIteration:
+        return None
+
+@pytest.mark.gui
+def test_open_new():
+    root = make_root()
+    mw = MainWindow(root)
+    root.update()
+
+    assert isinstance(mw.config_wrapper.config_subframe, PluginChooserFrame)
+
+    button = _find_button(mw.config_wrapper.config_subframe, 'CSV Load')
+    button.invoke()
+    root.update()
+
+    assert isinstance(mw.config_wrapper.configurator, PluginConfigurator)
+    plugin = mw.config_wrapper.configurator.plugin
+    assert isinstance(plugin, LoadCsvPlugin)
+
+    with patch('tkinter.filedialog.askopenfilenames', return_value=['tests/input1.csv']):
+        button = _find_button(mw.config_wrapper.config_subframe, "")
+        button.invoke()
+        root.update()
+        time.sleep(1)
+
+    root.update()
+    time.sleep(1)
+    root.update()
+
+    preview_frame = mw.config_wrapper.preview_subframe
+    assert isinstance(preview_frame, TabularDataFrame)
+    dataframe = preview_frame.dataframe
+
+    assert len(dataframe) == 4
+    assert len(dataframe.columns) == 2