playlist: Add a class for playlist controls

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

playlist/controls.py

@@ -0,0 +1,21 @@
+# Copyright 2021 (c) Anna Schumaker.
+from gi.repository import Gtk
+
+class Controls(Gtk.Box):
+    def __init__(self):
+        Gtk.Box.__init__(self)
+
+        self.search = Gtk.SearchEntry()
+        self.search.set_property("placeholder-text", "Type to filter tracks")
+        self.search.set_hexpand(True)
+        self.append(self.search)
+
+        self.random = Gtk.ToggleButton()
+        self.random.set_icon_name("media-playlist-shuffle")
+        self.append(self.random)
+
+        self.loop = Gtk.ToggleButton()
+        self.loop.set_icon_name("media-playlist-repeat")
+        self.append(self.loop)
+
+        self.add_css_class("linked")

playlist/test_controls.py

@@ -0,0 +1,26 @@
+# Copyright 2021 (c) Anna Schumaker.
+from . import controls
+from gi.repository import Gtk
+import trackdb
+import unittest
+
+class TestPlaylistControls(unittest.TestCase):
+    def test_playlist_controls_init(self):
+        ctrl = controls.Controls()
+
+        self.assertIsInstance(ctrl, Gtk.Box)
+        self.assertIsInstance(ctrl.search, Gtk.SearchEntry)
+        self.assertIsInstance(ctrl.random, Gtk.ToggleButton)
+        self.assertIsInstance(ctrl.loop, Gtk.ToggleButton)
+
+        self.assertEqual(ctrl.random.get_icon_name(), "media-playlist-shuffle")
+        self.assertEqual(ctrl.loop.get_icon_name(), "media-playlist-repeat")
+        self.assertEqual(ctrl.search.get_property("placeholder-text"),
+                                                  "Type to filter tracks")
+
+        self.assertTrue(ctrl.has_css_class("linked"))
+        self.assertTrue(ctrl.search.get_hexpand())
+
+        self.assertIn(ctrl.search, ctrl)
+        self.assertIn(ctrl.random, ctrl)
+        self.assertIn(ctrl.loop, ctrl)