test: fix LSP diagnostic warnings

.luarc.json

@@ -2,7 +2,9 @@
     "$schema": "https://raw.githubusercontent.com/sumneko/vscode-lua/master/setting/schema.json",
     "workspace": {
         "library": [
-            "$VIMRUNTIME"
+            "$VIMRUNTIME",
+            "${3rd}/busted/library",
+            "${3rd}/luassert/library"
         ]
     },
     "runtime": {

tests/bar_spec.lua

@@ -183,14 +183,14 @@ describe('[bar]', function()
         return vim.fn.char2nr('a')
       end)
       winbar:pick()
-      vim.fn.getchar:revert()
-      assert.spy(agent).was_called()
+      vim.fn.getchar:revert() ---@diagnostic disable-line: undefined-field
+      assert.spy(agent).was.called(1)
     end)
     it('picks directly', function()
       local agent = spy.on(winbar.components[2], 'on_click')
       winbar.in_pick_mode = true
       winbar:pick(2)
-      assert.spy(agent).was_called()
+      assert.spy(agent).was.called(1)
     end)
     it('gets the component according to given position', function()
       -- sym1 has width 0 and is at the beginning of the bar
@@ -224,7 +224,7 @@ describe('[bar]', function()
       assert.is_nil(rawget(_G.dropbar.bars[winbar.buf], winbar.win))
       assert.is_nil(rawget(_G.dropbar.callbacks[winbar.buf], winbar.win))
       for _, agent in ipairs(agents) do
-        assert.spy(agent).was_called()
+        assert.spy(agent).was.called(1)
       end
     end)
   end)

tests/menu_spec.lua

@@ -403,9 +403,9 @@ describe('[menu]', function()
       local agent2 = spy.on(sub_menu_it, 'close')
       local agent3 = spy.on(sub_sub_menu_it, 'close')
       vim.api.nvim_win_close(menu_it.win, true)
-      assert.spy(agent1).was.called()
-      assert.spy(agent2).was.called()
-      assert.spy(agent3).was.called()
+      assert.spy(agent1).was.called(1)
+      assert.spy(agent2).was.called(1)
+      assert.spy(agent3).was.called(1)
     end)
     it('closing current menu will set cursor to parent menu', function()
       sub_sub_menu_it:close()
@@ -546,7 +546,7 @@ describe('[menu]', function()
 
       menu_it:fuzzy_find_close()
 
-      assert.spy(gc_metamethod).was.called()
+      assert.spy(gc_metamethod).was.called(1)
     end)
   end)
 end)