diff options
| -rw-r--r-- | river/view_stack.zig | 41 |
1 files changed, 41 insertions, 0 deletions
diff --git a/river/view_stack.zig b/river/view_stack.zig index 80c3e4a..2bf695e 100644 --- a/river/view_stack.zig +++ b/river/view_stack.zig @@ -442,4 +442,45 @@ test "iteration (View)" { testing.expect(it.next() == &five_b.view); testing.expect(it.next() == null); } + + // Swap, then iterate + { + var view_a = views.first orelse unreachable; + var view_b = view_a.next orelse unreachable; + ViewStack(View).swap(&views, view_a, view_b); // {2, 5, 4, 1, 3} -> {5, 2, 4, 1, 3} + + view_a = views.last orelse unreachable; + view_b = view_a.prev orelse unreachable; + ViewStack(View).swap(&views, view_a, view_b); // {5, 2, 4, 1, 3} -> {5, 2, 4, 3, 1} + + view_a = views.last orelse unreachable; + view_b = views.first orelse unreachable; + ViewStack(View).swap(&views, view_a, view_b); // {5, 2, 4, 3, 1} -> {1, 2, 4, 3, 5} + + view_a = views.first orelse unreachable; + view_b = views.last orelse unreachable; + ViewStack(View).swap(&views, view_a, view_b); // {1, 2, 4, 3, 5} -> {5, 2, 4, 3, 1} + + view_a = views.first orelse unreachable; + view_a = view_a.next orelse unreachable; + view_b = view_a.next orelse unreachable; + view_b = view_b.next orelse unreachable; + ViewStack(View).swap(&views, view_a, view_b); // {5, 2, 4, 3, 1} -> {5, 3, 4, 2, 1} + + var it = ViewStack(View).iter(views.first, .forward, {}, filters.all); + testing.expect(it.next() == &five_b.view); + testing.expect(it.next() == &three_b_pa.view); + testing.expect(it.next() == &four_b.view); + testing.expect(it.next() == &two_a.view); + testing.expect(it.next() == &one_a_pb.view); + testing.expect(it.next() == null); + + it = ViewStack(View).iter(views.last, .reverse, {}, filters.all); + testing.expect(it.next() == &one_a_pb.view); + testing.expect(it.next() == &two_a.view); + testing.expect(it.next() == &four_b.view); + testing.expect(it.next() == &three_b_pa.view); + testing.expect(it.next() == &five_b.view); + testing.expect(it.next() == null); + } } |