-- Tests for (protocol-driven) ui2, intended to replace the legacy message grid UI.

local n = require('test.functional.testnvim')()
local Screen = require('test.functional.ui.screen')

local clear, command, exec_lua, feed = n.clear, n.command, n.exec_lua, n.feed

describe('messages2', function()
  local screen
  describe('target=cmd', function()
    before_each(function()
      clear()
      screen = Screen.new()
      screen:add_extra_attr_ids({
        [100] = { foreground = Screen.colors.Magenta1, bold = true },
      })
      exec_lua(function()
        require('vim._extui').enable({})
      end)
    end)

    it('multiline messages and pager', function()
      command('echo "foo\nbar"')
      screen:expect([[
        ^                                                     |
        {1:~                                                    }|*12
        foo[+1]                                              |
      ]])
      command('set ruler showcmd noshowmode')
      feed('g<lt>')
      screen:expect([[
                                                             |
        {1:~                                                    }|*9
        ─{100:Pager}───────────────────────────────────────────────|
        {4:fo^o                                                  }|
        {4:bar                                                  }|
        foo[+1]                             1,3           All|
      ]])
      -- New message clears spill indicator.
      feed('Q')
      screen:expect([[
                                                             |
        {1:~                                                    }|*9
        ─{100:Pager}───────────────────────────────────────────────|
        {4:fo^o                                                  }|
        {4:bar                                                  }|
        {9:E354: Invalid register name: '^@'}   1,3           All|
      ]])
      -- Multiple messages in same event loop iteration are appended.
      feed([[q:echo "foo\nbar" | echo "baz"<CR>]])
      screen:expect([[
                                                             |
        {1:~                                                    }|*8
        ─{100:Pager}───────────────────────────────────────────────|
        {4:^foo                                                  }|
        {4:bar                                                  }|
        {4:baz                                                  }|
                                            1,1           All|
      ]])
      -- No error for ruler virt_text msg_row exceeding buffer length.
      command([[map Q <cmd>echo "foo\nbar" <bar> ls<CR>]])
      feed('qQ')
      screen:expect([[
                                                             |
        {1:~                                                    }|*7
        ─{100:Pager}───────────────────────────────────────────────|
        {4:^foo                                                  }|
        {4:bar                                                  }|
        {4:                                                     }|
        {4:  1 %a   "[No Name]"                    line 1       }|
                                            1,1           All|
      ]])
      -- edit_unputchar() does not clear already updated screen #34515.
      feed('qix<Esc>dwi<C-r>')
      screen:expect([[
        {18:^"}                                                    |
        {1:~                                                    }|*12
                                 ^R         1,1           All|
      ]])
      feed('-')
      screen:expect([[
        x^                                                    |
        {1:~                                                    }|*12
                                            1,2           All|
      ]])
    end)

    it('new buffer, window and options after closing a buffer', function()
      command('set nomodifiable | echom "foo" | messages')
      screen:expect([[
                                                             |
        {1:~                                                    }|*10
        ─{100:Pager}───────────────────────────────────────────────|
        {4:fo^o                                                  }|
        foo                                                  |
      ]])
      command('bdelete | messages')
      screen:expect_unchanged()
    end)
  end)
end)