sidebar: Create a BaseRow widget

This is intended to be used as a base class for our playlist Row
widgets, and sets up some common variables needed by both.

Signed-off-by: Anna Schumaker <Anna@NoWheyCreamery.com>

emmental/sidebar/row.py

@@ -0,0 +1,13 @@
+# Copyright 2022 (c) Anna Schumaker.
+"""Widgets for sidebar rows."""
+from gi.repository import GObject
+from gi.repository import Gtk
+from .. import db
+
+
+class BaseRow(Gtk.Box):
+    """Base class for Row widgets."""
+
+    playlist = GObject.Property(type=db.playlist.Playlist)
+    name = GObject.Property(type=str)
+    count = GObject.Property(type=int)

tests/sidebar/test_row.py

@@ -0,0 +1,40 @@
+# Copyright 2022 (c) Anna Schumaker.
+"""Tests our sidebar row widgets."""
+import unittest
+import emmental.sidebar.row
+from gi.repository import Gio
+from gi.repository import Gtk
+
+
+class TestBaseRow(unittest.TestCase):
+    """Test our BaseRow class."""
+
+    def setUp(self):
+        """Set up common variables."""
+        self.row = emmental.sidebar.row.BaseRow()
+
+    def test_init(self):
+        """Test that the BaseRow is configured correctly."""
+        self.assertIsInstance(self.row, Gtk.Box)
+        self.assertEqual(self.row.get_orientation(),
+                         Gtk.Orientation.HORIZONTAL)
+
+    def test_name(self):
+        """Test the name property."""
+        self.assertEqual(self.row.name, "")
+        row2 = emmental.sidebar.row.BaseRow(name="Test Playlist")
+        self.assertEqual(row2.name, "Test Playlist")
+
+    def test_count(self):
+        """Test the count property."""
+        self.assertEqual(self.row.count, 0)
+        row2 = emmental.sidebar.row.BaseRow(count=42)
+        self.assertEqual(row2.count, 42)
+
+    def test_playlist(self):
+        """Test the playlist property."""
+        plist = emmental.db.playlist.Playlist(Gio.ListStore(),
+                                              0, "Playlist Name")
+        self.assertIsNone(self.row.playlist)
+        row2 = emmental.sidebar.row.BaseRow(playlist=plist)
+        self.assertEqual(row2.playlist, plist)