diff --git a/pyxpad/mock_data.py b/pyxpad/mock_data.py
new file mode 100644
index 0000000..5472d88
--- /dev/null
+++ b/pyxpad/mock_data.py
@@ -0,0 +1,53 @@
+from collections import defaultdict
+from typing import Union
+import numpy as np
+from pyxpad.pyxpad_utils import XPadDataDim, XPadDataItem
+
+
+class MockSignalData:
+    pass
+
+
+MOCK_SIGNALS = [
+    ["signal_a", ""],
+    ["signal_b", "This one has something"],
+    ["signal_c", ""],
+    ["first_signal", ""],
+    ["second_signal", "a description"],
+]
+
+MOCK_DEFAULT_SHOT = [MOCK_SIGNALS[0], MOCK_SIGNALS[1], MOCK_SIGNALS[2], MOCK_SIGNALS[4]]
+
+MOCK_LAST_SHOT = "12354"
+
+MOCK_SHOTS = defaultdict(
+    lambda: MOCK_DEFAULT_SHOT,
+    (
+        (MOCK_LAST_SHOT, [MOCK_SIGNALS[1], MOCK_SIGNALS[2], MOCK_SIGNALS[3]]),
+        ("45321", [MOCK_SIGNALS[0], MOCK_SIGNALS[1], MOCK_SIGNALS[4]]),
+        ("1", MOCK_SIGNALS),
+    ),
+)
+
+
+class MockClient:
+    """Mock UDA Client"""
+
+    @staticmethod
+    def get(name: str, shot: Union[int, str]):
+        if name == "lastshot":
+            child = MockSignalData()
+            child.lastshot = int(MOCK_LAST_SHOT)
+            signal = MockSignalData()
+            signal.children = [child]
+            return signal
+        if name.startswith("meta::list"):
+            signal = MockSignalData()
+            shot_data = MOCK_SHOTS[str(shot).strip()]
+            signal.signal_name = [item[0] for item in shot_data]
+            signal.description = [item[1] for item in shot_data]
+            return {"data": signal}
+        x = np.linspace(0.0, 1.0)
+        dim = XPadDataDim({"name": "time", "data": x})
+        data = XPadDataItem({"name": name, "data": np.sin(x), "dim": [dim]})
+        return data
diff --git a/tests/conftest.py b/tests/conftest.py
index e15b97c..899cdfb 100644
--- a/tests/conftest.py
+++ b/tests/conftest.py
@@ -1,4 +1,3 @@
-from collections import defaultdict
 import numpy as np
 import pytest
 import shutil
@@ -7,6 +6,7 @@
 
 from pyxpad.pyxpad_utils import XPadDataDim, XPadDataItem
 from pyxpad import xpadsource, PyXPad
+from pyxpad.mock_data import MockClient
 
 
 @pytest.fixture
@@ -36,53 +36,6 @@ def copy_tree_data(tmp_path):
     return dest
 
 
-class MockSignalData:
-    pass
-
-
-MOCK_SIGNALS = [
-    ["signal_a", ""],
-    ["signal_b", "This one has something"],
-    ["signal_c", ""],
-    ["first_signal", ""],
-    ["second_signal", "a description"],
-]
-
-MOCK_DEFAULT_SHOT = [MOCK_SIGNALS[0], MOCK_SIGNALS[1], MOCK_SIGNALS[2], MOCK_SIGNALS[4]]
-
-MOCK_SHOTS = defaultdict(
-    lambda: MOCK_DEFAULT_SHOT,
-    (
-        ("12354", [MOCK_SIGNALS[1], MOCK_SIGNALS[2], MOCK_SIGNALS[3]]),
-        ("45321", [MOCK_SIGNALS[0], MOCK_SIGNALS[1], MOCK_SIGNALS[4]]),
-        ("1", MOCK_SIGNALS),
-    ),
-)
-
-
-class MockClient:
-    """Mock UDA Client"""
-
-    @staticmethod
-    def get(name: str, shot: Union[int, str]):
-        if name == "lastshot":
-            child = MockSignalData()
-            child.lastshot = 12354
-            signal = MockSignalData()
-            signal.children = [child]
-            return signal
-        if name.startswith("meta::list"):
-            signal = MockSignalData()
-            shot_data = MOCK_SHOTS[str(shot).strip()]
-            signal.signal_name = [item[0] for item in shot_data]
-            signal.description = [item[1] for item in shot_data]
-            return {"data": signal}
-        x = np.linspace(0.0, 1.0)
-        dim = XPadDataDim({"name": "time", "data": x})
-        data = XPadDataItem({"name": name, "data": np.sin(x), "dim": [dim]})
-        return data
-
-
 class MockIdamModule:
     """Mock UDA module"""
 
diff --git a/tests/test_pyxpad.py b/tests/test_pyxpad.py
index 5c2a01f..a1df5b6 100644
--- a/tests/test_pyxpad.py
+++ b/tests/test_pyxpad.py
@@ -1,6 +1,8 @@
 from pyxpad.xpadsource import XPadSource
 from Qt import QtCore
 
+from pyxpad.mock_data import MOCK_LAST_SHOT
+
 import pytest
 
 
@@ -24,7 +26,7 @@ def test_get_last_shot(mock_uda, copy_tree_data, pyxpadbot, qtbot):
     main.sources.updateDisplay()
     main.lastShotButton.setEnabled(True)
     qtbot.mouseClick(main.lastShotButton, QtCore.Qt.LeftButton)
-    assert str(main.shotInput.text()).strip() == "12354"
+    assert str(main.shotInput.text()).strip() == MOCK_LAST_SHOT
 
 
 def test_get_available_signals(mock_uda, pyxpadbot, qtbot):
diff --git a/tests/test_xpadsource.py b/tests/test_xpadsource.py
index ebec298..1865eb9 100644
--- a/tests/test_xpadsource.py
+++ b/tests/test_xpadsource.py
@@ -1,14 +1,9 @@
 from pyxpad.xpadsource import XPadSource
 from pyxpad.pyxpad_utils import XPadDataDim, XPadDataItem
+from pyxpad.mock_data import MOCK_LAST_SHOT, MOCK_SIGNALS
 
 
-EXPECTED_VARIABLE_NAMES = [
-    "signal_a",
-    "signal_b",
-    "signal_c",
-    "first_signal",
-    "second_signal",
-]
+EXPECTED_VARIABLE_NAMES = [signal[0] for signal in MOCK_SIGNALS]
 
 
 def test_init_with_tree(copy_tree_data):
@@ -27,7 +22,7 @@ def test_read(copy_tree_data, mock_uda):
 
 def test_latest_shot(mock_uda):
     source = XPadSource()
-    assert source.last_shot_number == 12354
+    assert source.last_shot_number == int(MOCK_LAST_SHOT)
 
 
 def test_from_signals(mock_uda):