diff --git a/tests/gtk/test_row.py b/tests/gtk/test_row.py
index 38a1af5..8b82e5c 100644
--- a/tests/gtk/test_row.py
+++ b/tests/gtk/test_row.py
@@ -1,5 +1,6 @@
 # Copyright 2023 (c) Anna Schumaker.
 """Tests our row widgets and factories."""
+import datetime
 import unittest
 import xfstestsdb.gtk.row
 import tests.xunit
@@ -375,3 +376,67 @@ class TestSummaryFactory(unittest.TestCase):
 
         self.factory.emit("unbind", self.listitem)
         self.assertFalse(self.listitem.get_child().has_css_class("accent"))
+
+
+class TestSidebarFactory(unittest.TestCase):
+    """Tests our Gtk.Factory to show Xfstsets runs in the sidebar."""
+
+    def setUp(self):
+        """Set up common variables."""
+        self.devlist = xfstestsdb.gtk.tree.DeviceRunsList("/dev/vda1")
+        self.treeitem = Gtk.TreeListRow()
+        self.treeitem.get_item = unittest.mock.Mock(return_value=self.devlist)
+        self.listitem = Gtk.ListItem()
+        self.listitem.get_item = unittest.mock.Mock(return_value=self.treeitem)
+
+        self.factory = xfstestsdb.gtk.row.SidebarFactory()
+
+    def test_init(self):
+        """Test that the factory was initialized correctly."""
+        self.assertIsInstance(self.factory, Gtk.SignalListItemFactory)
+
+    def test_setup(self):
+        """Test that thefactory implements the 'setup' signal."""
+        self.factory.emit("setup", self.listitem)
+        expander = self.listitem.get_child()
+        self.assertIsInstance(expander, Gtk.TreeExpander)
+        self.assertIsInstance(expander.get_child(), Gtk.Label)
+        self.assertEqual(expander.get_child().props.yalign, 0.75)
+        self.assertTrue(expander.get_child().has_css_class("numeric"))
+
+    def test_bind_device_list(self):
+        """Test binding to a DeviceRunsList object."""
+        self.factory.emit("setup", self.listitem)
+        self.factory.emit("bind", self.listitem)
+        self.assertEqual(self.listitem.get_child().get_child().get_text(),
+                         "/dev/vda1")
+        self.assertEqual(self.listitem.get_child().get_list_row(),
+                         self.treeitem)
+        self.assertFalse(self.listitem.props.selectable)
+
+    def test_bind_xfstests_run(self):
+        """Test binding to an XfstestsRun object."""
+        now = datetime.datetime.now()
+        self.devlist.add_run(1, now)
+        self.treeitem.get_item.return_value = self.devlist[0]
+
+        self.factory.emit("setup", self.listitem)
+        self.factory.emit("bind", self.listitem)
+        self.assertEqual(self.listitem.get_child().get_child().get_text(),
+                         f"#1: {now.strftime('%T')}")
+        self.assertEqual(self.listitem.get_child().get_list_row(),
+                         self.treeitem)
+        self.assertTrue(self.listitem.props.selectable)
+
+    def test_unbind(self):
+        """Test that the factory implements the 'unbind' signal."""
+        self.factory.emit("setup", self.listitem)
+        self.factory.emit("bind", self.listitem)
+        self.factory.emit("unbind", self.listitem)
+        self.assertEqual(self.listitem.get_child().get_child().get_text(), "")
+
+    def test_teardown(self):
+        """Test that the factory implements the 'teardown' signal."""
+        self.factory.emit("setup", self.listitem)
+        self.factory.emit("teardown", self.listitem)
+        self.assertIsNone(self.listitem.get_child())
diff --git a/xfstestsdb/gtk/row.py b/xfstestsdb/gtk/row.py
index a604294..c25b2f5 100644
--- a/xfstestsdb/gtk/row.py
+++ b/xfstestsdb/gtk/row.py
@@ -4,6 +4,7 @@ import typing
 from gi.repository import GObject
 from gi.repository import Gtk
 from . import model
+from . import tree
 
 
 STYLES = {"passed": "success", "failed": "error",
@@ -181,3 +182,40 @@ class SummaryFactory(XunitFactory):
     def do_unbind(self, row: model.TestCase, child: Gtk.Inscription) -> None:
         """Unbind a ListItem from the child widget."""
         child.remove_css_class(STYLES[row.name])
+
+
+class SidebarFactory(Gtk.SignalListItemFactory):
+    """Factory for making sidebar widgets."""
+
+    def __init__(self, *args, **kwargs):
+        """Initialize our InscriptionFactory."""
+        super().__init__(*args, **kwargs)
+        self.connect("setup", self.__setup)
+        self.connect("bind", self.__bind)
+        self.connect("unbind", self.__unbind)
+        self.connect("teardown", self.__teardown)
+
+    def __setup(self, factory: typing.Self, listitem: Gtk.ListItem) -> None:
+        """Set up a ListItem child widget."""
+        child = Gtk.Label(yalign=0.75)
+        child.add_css_class("numeric")
+        expander = Gtk.TreeExpander(child=child)
+        listitem.set_child(expander)
+
+    def __bind(self, factory: typing.Self, listitem: Gtk.ListItem) -> None:
+        """Bind a ListItem to the child widget."""
+        treeitem = listitem.get_item()
+        expander = listitem.get_child()
+        expander.set_list_row(treeitem)
+
+        row = treeitem.get_item()
+        child = expander.get_child()
+        child.set_text(str(row))
+        listitem.props.selectable = isinstance(row, tree.XfstestsRun)
+
+    def __unbind(self, factory: typing.Self, listitem: Gtk.ListItem) -> None:
+        """Unbind a ListItem from the child widget."""
+        listitem.get_child().get_child().set_text("")
+
+    def __teardown(self, factory: typing.Self, listitem: Gtk.ListItem) -> None:
+        listitem.set_child(None)