scanner: Create a global Queue instance

And some convenience functions for using it

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

scanner/__init__.py

@@ -3,3 +3,14 @@ from . import metadata
 from . import queue
 from . import task
 from . import widgets
+
+Queue = queue.TaskQueue()
+
+def import_track(lib, track, playcount, lastplayed):
+    Queue.push(task.ImportTask(lib, track, playcount, lastplayed))
+
+def update_library(lib):
+    Queue.push(task.CheckSchedulerTask(lib))
+
+def remove_library(lib):
+    Queue.push(task.RemoveLibrarySchedulerTask(lib))

scanner/test_scanner.py

@@ -0,0 +1,33 @@
+# Copyright 2021 (c) Anna Schumaker.
+import datetime
+import db
+import pathlib
+import scanner
+import unittest
+
+test_album = pathlib.Path("./data/Test Album")
+test_track = test_album / "01 - Test Track.ogg"
+
+class TestScanner(unittest.TestCase):
+    def tearDown(self):
+        scanner.Queue.tasks_finished()
+
+    def test_scanner_init(self):
+        self.assertIsInstance(scanner.Queue, scanner.queue.TaskQueue)
+
+    def test_scanner_import_track(self):
+        lib = db.library.Table.find(test_album)
+        scanner.import_track(lib, test_track, 2, datetime.date.today())
+        self.assertIsInstance(scanner.Queue.tasks[0], scanner.task.ImportTask)
+
+    def test_scanner_update_library(self):
+        lib = db.library.Table.find(test_album)
+        scanner.update_library(lib)
+        self.assertIsInstance(scanner.Queue.tasks[0],
+                              scanner.task.CheckSchedulerTask)
+
+    def test_scanner_remove_library(self):
+        lib = db.library.Table.find(test_album)
+        scanner.remove_library(lib)
+        self.assertIsInstance(scanner.Queue.tasks[0],
+                              scanner.task.RemoveLibrarySchedulerTask)