test: select with nil

lua/harpoon/test/list_spec.lua

@@ -30,4 +30,34 @@ describe("list", function()
             "baz---qux",
         })
     end)
+
+    it("select_with_nil", function()
+        local foo_selected = nil
+        local bar_selected = nil
+
+        local config = Config.merge_config({
+            foo = {
+                select_with_nil = true,
+                select = function (list_item, options)
+                    foo_selected = {list_item, options}
+                end
+            },
+            bar = {
+                select = function (list_item, options)
+                    bar_selected = {list_item, options}
+                end
+            }
+        })
+        local fooc = Config.get_config(config, "foo")
+        local barc = Config.get_config(config, "bar")
+
+        local foo = List.decode(fooc, "foo", {})
+        local bar = List.decode(fooc, "bar", {})
+
+        foo:select(4, {})
+        bar:select(4, {})
+
+        eq({nil, {}}, foo_selected)
+        eq(nil, bar_selected)
+    end)
 end)