Restrict preview scans to strict side

1 files changed, 28 insertions, 6 deletions

diff --git a/tests/run.lua b/tests/run.lua
index e16f082..b7a4820 100644
--- a/tests/run.lua
+++ b/tests/run.lua
@@ -4548,14 +4548,36 @@ test("Direct preview scanning stays on the cursor line", function()
 
   local records = planner:scan_current_line(
     view,
-    domain.Position.new(2, 2),
+    domain.Position.new(2, 1),
     domain.Direction.FORWARD
   )
-  same(2, #records)
-  same(domain.Position.new(2, 1), records[1].position)
-  same("d", records[1].character)
-  same(domain.Position.new(2, 2), records[2].position)
-  same("e", records[2].character)
+  same(1, #records)
+  same(domain.Position.new(2, 2), records[1].position)
+  same("e", records[1].character)
+end)
+
+test("Direct preview scanning excludes the cursor and opposite side", function()
+  local view = text_topology.new({ "abcde" }, "utf-8")
+  local planner = direct_preview_planner.new()
+  local origin = domain.Position.new(1, 3)
+
+  local forward = planner:scan_current_line(
+    view,
+    origin,
+    domain.Direction.FORWARD
+  )
+  same(2, #forward)
+  same(domain.Position.new(1, 4), forward[1].position)
+  same(domain.Position.new(1, 5), forward[2].position)
+
+  local backward = planner:scan_current_line(
+    view,
+    origin,
+    domain.Direction.BACKWARD
+  )
+  same(2, #backward)
+  same(domain.Position.new(1, 2), backward[1].position)
+  same(domain.Position.new(1, 1), backward[2].position)
 end)
 
 for _, item in ipairs(tests) do