1 files changed, 17 insertions, 0 deletions
diff --git a/lua/clever_f/testing/memory_host.lua b/lua/clever_f/testing/memory_host.lua
index 42dab71..459c9a8 100644
--- a/lua/clever_f/testing/memory_host.lua
+++ b/lua/clever_f/testing/memory_host.lua
@@ -163,6 +163,7 @@ function MemoryHost.new(options)
     _prompts = {},
     _redraws = {},
     _diagnostics = {},
+    _highlight_groups = copy(options.highlight_groups or {}),
     _highlights = {},
     _timers = {},
     _event_registrations = {},
@@ -646,6 +647,22 @@ function MemoryHost:diagnostics()
   return copy(self._diagnostics)
 end
 
+function MemoryHost:read_highlight_group(name)
+  if type(name) ~= "string" or name == "" then
+    error("highlight group name must be a nonempty string", 2)
+  end
+  local definition = self._highlight_groups[name]
+  self:_record("read_highlight_group", {
+    name = name,
+    defined = definition ~= nil,
+  })
+  return copy(definition)
+end
+
+function MemoryHost:highlight_groups()
+  return copy(self._highlight_groups)
+end
+
 function MemoryHost:create_highlight(specification)
   if type(specification) ~= "table" then
     error("highlight specification must be a table", 2)