1 files changed, 26 insertions, 0 deletions
diff --git a/tests/run.lua b/tests/run.lua
index 6a8fc64..08771db 100644
--- a/tests/run.lua
+++ b/tests/run.lua
@@ -7832,6 +7832,32 @@ test("Initiating action methods supply their fixed descriptors", function()
   end
 end)
 
+test("Free-form action adapter accepts every valid descriptor", function()
+  local origins = { f = 1, F = 3, t = 1, T = 3 }
+  for _, descriptor in ipairs({ "f", "F", "t", "T" }) do
+    local state = fresh_sequence_state()
+    local host = MemoryHost.new({
+      buffer_lines = { "aaa" },
+      cursor = { line = 1, byte_column = origins[descriptor] },
+      input_packets = { { kind = "text", text = "a" } },
+      configuration = {
+        mark_cursor = false,
+        mark_char = false,
+      },
+      emit_movement_events = false,
+    })
+    local root = composition_root.new({ host = host })
+    local outcome = root:invoke_descriptor(descriptor)
+
+    same(domain.ActionKind.MOVEMENT, outcome.kind, descriptor)
+    same(
+      domain.Descriptor.from_string(descriptor),
+      state:get_previous_descriptor("n"),
+      descriptor
+    )
+  end
+end)
+
 test("ActionFacade returns typed primary action outcomes", function()
   fresh_sequence_state()
   local host = MemoryHost.new({