Rebuild reversed TILL feedback

1 files changed, 39 insertions, 0 deletions

diff --git a/tests/run.lua b/tests/run.lua
index b770884..e569cbb 100644
--- a/tests/run.lua
+++ b/tests/run.lua
@@ -6472,6 +6472,45 @@ test("Repeated TILL migration compares movement directions", function()
   falsy(feedback_service.till_direction_changed(request))
 end)
 
+test("Direction-changing repeated TILL rebuilds feedback", function()
+  local state, transitions = fresh_sequence_state()
+  local host = MemoryHost.new({ buffer_lines = { "ababa" } })
+  local feedback = feedback_service.new({
+    host = host,
+    transitions = transitions,
+  })
+  local shared_target = target_plan.build(target("b"), matching_policy())
+  local forward = motion_plan.build(shared_target, "t")
+  local backward = motion_plan.build(shared_target, "T")
+  local first = feedback:request_persistent({
+    context = "n",
+    anchor = domain.Position.new(1, 1),
+    target_plan = shared_target,
+    motion_plan = forward,
+    window = "window-1",
+  })
+
+  local migration = feedback:migrate_command({
+    context = "n",
+    origin = domain.Position.new(1, 3),
+    destination = domain.Position.new(1, 1),
+    outcome = domain.SearchOutcome.complete(domain.Position.new(1, 1), 1),
+    resolved_motion_plan = backward,
+    first_move = false,
+    moved_forward = false,
+    previous_moved_forward = true,
+  })
+
+  truthy(migration.migrated)
+  same(
+    feedback_service.MigrationReason.TILL_DIRECTION_CHANGE,
+    migration.reason
+  )
+  falsy(first.identity == migration.overlay.identity)
+  same(nil, host:highlights()[first.identity])
+  same(1, #state.target_overlays)
+end)
+
 for _, item in ipairs(tests) do
   local ok, failure = xpcall(item.body, debug.traceback)
   if not ok then