Test that leaving wakes up /sync

tests/31sync/08polling.pl

@@ -46,3 +46,50 @@
          Future->done(1)
       })
    };
+
+test "Sync is woken up for leaves",
+   requires => [ local_user_fixture( with_events => 0 ),
+                 qw( can_sync ) ],
+
+   check => sub {
+      my ( $user ) = @_;
+
+      my ( $filter_id, $room_id, $next );
+
+      matrix_create_filter( $user, {} )->then( sub {
+         ( $filter_id ) = @_;
+
+         matrix_create_room( $user );
+      })->then( sub {
+         ( $room_id ) = @_;
+
+         matrix_sync( $user, filter => $filter_id );
+      })->then( sub {
+         my ( $body ) = @_;
+
+         $next = $body->{next_batch};
+         Future->needs_all(
+            matrix_sync( $user,
+               filter => $filter_id, since => $next, timeout => 10000
+            ),
+
+            delay( 0.1 )->then( sub {
+               matrix_leave_room(
+                  $user, $room_id
+               )
+            }),
+         )
+      })->then( sub {
+         my ( $body, $response, $event_id ) = @_;
+
+         my $room = $body->{rooms}{leave}{$room_id};
+
+         my $events = $room->{timeline}{events} or
+            die "Expected an event timeline";
+         @$events == 1 or
+            die "Expected one timeline event";
+
+         Future->done(1)
+      })
+   };
+