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File: //home/ubuntu/neovim/test/functional/plugin/health_spec.lua
local t = require('test.testutil')
local n = require('test.functional.testnvim')()
local Screen = require('test.functional.ui.screen')

local clear = n.clear
local curbuf_contents = n.curbuf_contents
local command = n.command
local eq, matches = t.eq, t.matches
local getcompletion = n.fn.getcompletion
local insert = n.insert
local exec_lua = n.exec_lua
local source = n.source
local assert_alive = n.assert_alive
local fn = n.fn
local api = n.api

describe(':checkhealth', function()
  it('detects invalid $VIMRUNTIME', function()
    clear({
      env = { VIMRUNTIME = 'bogus' },
    })
    local status, err = pcall(command, 'checkhealth')
    eq(false, status)
    eq('Invalid $VIMRUNTIME: bogus', string.match(err, 'Invalid.*'))
  end)

  it("detects invalid 'runtimepath'", function()
    clear()
    command('set runtimepath=bogus')
    local status, err = pcall(command, 'checkhealth')
    eq(false, status)
    eq("Invalid 'runtimepath'", string.match(err, 'Invalid.*'))
  end)

  it('detects invalid $VIM', function()
    clear()
    -- Do this after startup, otherwise it just breaks $VIMRUNTIME.
    command("let $VIM='zub'")
    command('checkhealth vim.health')
    matches('ERROR $VIM .* zub', curbuf_contents())
  end)

  it('completions can be listed via getcompletion()', function()
    clear()
    eq('vim.deprecated', getcompletion('vim', 'checkhealth')[1])
    eq('vim.provider', getcompletion('vim.prov', 'checkhealth')[1])
    eq('vim.lsp', getcompletion('vim.ls', 'checkhealth')[1])
  end)

  it('completion checks for vim.health._complete() return type #28456', function()
    clear()
    exec_lua([[vim.health._complete = function() return 1 end]])
    eq({}, getcompletion('', 'checkhealth'))
    exec_lua([[vim.health._complete = function() return { 1 } end]])
    eq({}, getcompletion('', 'checkhealth'))
    assert_alive()
  end)
end)

describe('health.vim', function()
  before_each(function()
    clear { args = { '-u', 'NORC' } }
    -- Provides healthcheck functions
    command('set runtimepath+=test/functional/fixtures')
  end)

  describe(':checkhealth', function()
    it('functions report_*() render correctly', function()
      command('checkhealth full_render')
      n.expect([[

      ==============================================================================
      test_plug.full_render: require("test_plug.full_render.health").check()

      report 1 ~
      - OK life is fine
      - WARNING no what installed
        - ADVICE:
          - pip what
          - make what

      report 2 ~
      - stuff is stable
      - ERROR why no hardcopy
        - ADVICE:
          - :help |:hardcopy|
          - :help |:TOhtml|
      ]])
    end)

    it('concatenates multiple reports', function()
      command('checkhealth success1 success2 test_plug')
      n.expect([[

        ==============================================================================
        test_plug: require("test_plug.health").check()

        report 1 ~
        - OK everything is fine

        report 2 ~
        - OK nothing to see here

        ==============================================================================
        test_plug.success1: require("test_plug.success1.health").check()

        report 1 ~
        - OK everything is fine

        report 2 ~
        - OK nothing to see here

        ==============================================================================
        test_plug.success2: require("test_plug.success2.health").check()

        another 1 ~
        - OK ok
        ]])
    end)

    it('lua plugins submodules', function()
      command('checkhealth test_plug.submodule')
      n.expect([[

        ==============================================================================
        test_plug.submodule: require("test_plug.submodule.health").check()

        report 1 ~
        - OK everything is fine

        report 2 ~
        - OK nothing to see here
        ]])
    end)

    it('... including empty reports', function()
      command('checkhealth test_plug.submodule_empty')
      n.expect([[

      ==============================================================================
      test_plug.submodule_empty: require("test_plug.submodule_empty.health").check()

      - ERROR The healthcheck report for "test_plug.submodule_empty" plugin is empty.
      ]])
    end)

    it('highlights OK, ERROR', function()
      local screen = Screen.new(50, 12)
      screen:attach()
      screen:set_default_attr_ids({
        Ok = { foreground = Screen.colors.LightGreen },
        Error = { foreground = Screen.colors.Red },
        Heading = { foreground = tonumber('0x6a0dad') },
        Bar = { foreground = Screen.colors.LightGrey, background = Screen.colors.DarkGrey },
      })
      command('checkhealth foo success1')
      command('set nofoldenable nowrap laststatus=0')
      screen:expect {
        grid = [[
        ^                                                  |
        {Bar:──────────────────────────────────────────────────}|
        {Heading:foo: }                                             |
                                                          |
        - {Error:ERROR} No healthcheck found for "foo" plugin.    |
                                                          |
        {Bar:──────────────────────────────────────────────────}|
        {Heading:test_plug.success1: require("test_plug.success1.he}|
                                                          |
        {Heading:report 1}                                          |
        - {Ok:OK} everything is fine                           |
                                                          |
      ]],
      }
    end)

    it('gracefully handles invalid healthcheck', function()
      command('checkhealth non_existent_healthcheck')
      -- luacheck: ignore 613
      n.expect([[

        ==============================================================================
        non_existent_healthcheck: 

        - ERROR No healthcheck found for "non_existent_healthcheck" plugin.
        ]])
    end)

    it('does not use vim.health as a healtcheck', function()
      -- vim.health is not a healthcheck
      command('checkhealth vim')
      n.expect([[
      ERROR: No healthchecks found.]])
    end)
  end)
end)

describe(':checkhealth provider', function()
  it("works correctly with a wrongly configured 'shell'", function()
    clear()
    command([[set shell=echo\ WRONG!!!]])
    command('let g:loaded_perl_provider = 0')
    command('let g:loaded_python3_provider = 0')
    command('checkhealth provider')
    eq(nil, string.match(curbuf_contents(), 'WRONG!!!'))
  end)
end)

describe(':checkhealth window', function()
  before_each(function()
    clear { args = { '-u', 'NORC' } }
    -- Provides healthcheck functions
    command('set runtimepath+=test/functional/fixtures')
    command('set nofoldenable nowrap laststatus=0')
  end)

  it('opens directly if no buffer created', function()
    local screen = Screen.new(50, 12)
    screen:set_default_attr_ids {
      [1] = { foreground = Screen.colors.Blue, bold = true },
      [14] = { foreground = Screen.colors.LightGrey, background = Screen.colors.DarkGray },
      [31] = { foreground = tonumber('0x6a0dad') },
      [32] = { foreground = Screen.colors.PaleGreen2 },
    }
    screen:attach({ ext_multigrid = true })
    command('checkhealth success1')
    screen:expect {
      grid = [[
    ## grid 1
      [2:--------------------------------------------------]|*11
      [3:--------------------------------------------------]|
    ## grid 2
      ^                                                  |
      {14:──────────────────────────────────────────────────}|
      {14:────────────────────────────}                      |
      {31:test_plug.success1: require("test_plug.success1.  }|
      {31:health").check()}                                  |
                                                        |
      {31:report 1}                                          |
      - {32:OK} everything is fine                           |
                                                        |
      {31:report 2}                                          |
      - {32:OK} nothing to see here                          |
    ## grid 3
                                                        |
    ]],
    }
  end)

  local function test_health_vsplit(left, emptybuf, mods)
    local screen = Screen.new(50, 20)
    screen:set_default_attr_ids {
      [1] = { foreground = Screen.colors.Blue, bold = true },
      [14] = { foreground = Screen.colors.LightGrey, background = Screen.colors.DarkGray },
      [31] = { foreground = tonumber('0x6a0dad') },
      [32] = { foreground = Screen.colors.PaleGreen2 },
    }
    screen:attach({ ext_multigrid = true })
    if not emptybuf then
      insert('hello')
    end
    command(mods .. ' checkhealth success1')
    screen:expect(
      ([[
    ## grid 1
      %s
      [3:--------------------------------------------------]|
    ## grid 2
      %s                   |
      {1:~                       }|*18
    ## grid 3
                                                        |
    ## grid 4
      ^                         |
      {14:─────────────────────────}|*3
      {14:───}                      |
      {31:test_plug.success1:      }|
      {31:require("test_plug.      }|
      {31:success1.health").check()}|
                               |
      {31:report 1}                 |
      - {32:OK} everything is fine  |
                               |
      {31:report 2}                 |
      - {32:OK} nothing to see here |
                               |
      {1:~                        }|*4
    ]]):format(
        left and '[4:-------------------------]│[2:------------------------]|*19'
          or '[2:------------------------]│[4:-------------------------]|*19',
        emptybuf and '     ' or 'hello'
      )
    )
  end

  for _, mods in ipairs({ 'vertical', 'leftabove vertical', 'topleft vertical' }) do
    it(('opens in left vsplit window with :%s and no buffer created'):format(mods), function()
      test_health_vsplit(true, true, mods)
    end)
    it(('opens in left vsplit window with :%s and non-empty buffer'):format(mods), function()
      test_health_vsplit(true, false, mods)
    end)
  end

  for _, mods in ipairs({ 'rightbelow vertical', 'botright vertical' }) do
    it(('opens in right vsplit window with :%s and no buffer created'):format(mods), function()
      test_health_vsplit(false, true, mods)
    end)
    it(('opens in right vsplit window with :%s and non-empty buffer'):format(mods), function()
      test_health_vsplit(false, false, mods)
    end)
  end

  local function test_health_split(top, emptybuf, mods)
    local screen = Screen.new(50, 25)
    screen:attach({ ext_multigrid = true })
    screen._default_attr_ids = nil
    if not emptybuf then
      insert('hello')
    end
    command(mods .. ' checkhealth success1')
    screen:expect(
      ([[
    ## grid 1
%s
      [3:--------------------------------------------------]|
    ## grid 2
      %s                                             |
      ~                                                 |*10
    ## grid 3
                                                        |
    ## grid 4
      ^                                                  |
      ──────────────────────────────────────────────────|
      ────────────────────────────                      |
      test_plug.success1: require("test_plug.success1.  |
      health").check()                                  |
                                                        |
      report 1                                          |
      - OK everything is fine                           |
                                                        |
      report 2                                          |
      - OK nothing to see here                          |
                                                        |
    ]]):format(
        top
            and [[
      [4:--------------------------------------------------]|*12
      health://                                         |
      [2:--------------------------------------------------]|*11]]
          or ([[
      [2:--------------------------------------------------]|*11
      [No Name] %s                                     |
      [4:--------------------------------------------------]|*12]]):format(
            emptybuf and '   ' or '[+]'
          ),
        emptybuf and '     ' or 'hello'
      )
    )
  end

  for _, mods in ipairs({ 'horizontal', 'leftabove', 'topleft' }) do
    it(('opens in top split window with :%s and no buffer created'):format(mods), function()
      test_health_split(true, true, mods)
    end)
    it(('opens in top split window with :%s and non-empty buffer'):format(mods), function()
      test_health_split(true, false, mods)
    end)
  end

  for _, mods in ipairs({ 'rightbelow', 'botright' }) do
    it(('opens in bottom split window with :%s and no buffer created'):format(mods), function()
      test_health_split(false, true, mods)
    end)
    it(('opens in bottom split window with :%s and non-empty buffer'):format(mods), function()
      test_health_split(false, false, mods)
    end)
  end

  it('opens in tab', function()
    -- create an empty buffer called "my_buff"
    api.nvim_create_buf(false, true)
    command('file my_buff')
    command('checkhealth success1')
    -- define a function that collects all buffers in each tab
    -- returns a dictionary like {tab1 = ["buf1", "buf2"], tab2 = ["buf3"]}
    source([[
        function CollectBuffersPerTab()
                let buffs = {}
                for i in range(tabpagenr('$'))
                  let key = 'tab' . (i + 1)
                  let value = []
                  for j in tabpagebuflist(i + 1)
                    call add(value, bufname(j))
                  endfor
                  let buffs[key] = value
                endfor
                return buffs
        endfunction
    ]])
    local buffers_per_tab = fn.CollectBuffersPerTab()
    eq(buffers_per_tab, { tab1 = { 'my_buff' }, tab2 = { 'health://' } })
  end)
end)