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path: root/test/functional/ui/tabline_spec.lua
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local helpers = require('test.functional.helpers')(after_each)
local Screen = require('test.functional.ui.screen')
local clear, command, eq = helpers.clear, helpers.command, helpers.eq

describe('ui/ext_tabline', function()
  local screen
  local event_tabs, event_curtab, event_curbuf, event_buffers

  before_each(function()
    clear()
    screen = Screen.new(25, 5)
    screen:attach({rgb=true, ext_tabline=true})
    function screen:_handle_tabline_update(curtab, tabs, curbuf, buffers)
      event_curtab = curtab
      event_tabs = tabs
      event_curbuf = curbuf
      event_buffers = buffers
    end
  end)

  it('publishes UI events', function()
    command("tabedit another-tab")

    local expected_tabs = {
      {tab = { id = 1 }, name = '[No Name]'},
      {tab = { id = 2 }, name = 'another-tab'},
    }
    screen:expect{grid=[[
      ^                         |
      ~                        |
      ~                        |
      ~                        |
                               |
    ]], condition=function()
      eq({ id = 2 }, event_curtab)
      eq(expected_tabs, event_tabs)
    end}

    command("tabNext")
    screen:expect{grid=[[
      ^                         |
      ~                        |
      ~                        |
      ~                        |
                               |
    ]], condition=function()
      eq({ id = 1 }, event_curtab)
      eq(expected_tabs, event_tabs)
    end}
  end)

  it('buffer UI events', function()
    local expected_buffers_initial= {
      {buffer = { id = 1 }, name = '[No Name]'},
    }

    screen:expect{grid=[[
      ^                         |
      ~                        |
      ~                        |
      ~                        |
                               |
    ]], condition=function()
      eq({ id = 1}, event_curbuf)
      eq(expected_buffers_initial, event_buffers)
    end}

    command("badd another-buffer")
    command("bnext")

    local expected_buffers = {
      {buffer = { id = 1 }, name = '[No Name]'},
      {buffer = { id = 2 }, name = 'another-buffer'},
    }
    screen:expect{grid=[[
      ^                         |
      ~                        |
      ~                        |
      ~                        |
                               |
    ]], condition=function()
      eq({ id = 2 }, event_curbuf)
      eq(expected_buffers, event_buffers)
    end}
  end)
end)