Fix issue #368 and add tests (#369)

tests/test_autodiscover.py

@@ -0,0 +1,30 @@
+from django.urls import include, path
+
+# isort: off
+from .django_test_setup import *  # noqa
+from .testutils import Django30CompatibleSimpleTestCase as SimpleTestCase
+
+# isort: on
+
+
+from django_components import autodiscover, component
+
+urlpatterns = [
+    path("", include("tests.components.urls")),
+]
+
+
+class TestAutodiscover(SimpleTestCase):
+    def setUp(self):
+        settings.SETTINGS_MODULE = "tests.test_autodiscover"  # noqa
+
+    def tearDown(self) -> None:
+        del settings.SETTINGS_MODULE  # noqa
+
+    def test_autodiscover_with_components_as_views(self):
+        try:
+            autodiscover()
+        except component.AlreadyRegistered:
+            self.fail(
+                "Autodiscover should not raise AlreadyRegistered exception"
+            )