1 files changed, 124 insertions, 0 deletions
diff --git a/test/functional/ui/options_spec.lua b/test/functional/ui/options_spec.lua
new file mode 100644
index 0000000000..c26fa5e29b
--- /dev/null
+++ b/test/functional/ui/options_spec.lua
@@ -0,0 +1,124 @@
+local global_helpers = require('test.helpers')
+local helpers = require('test.functional.helpers')(after_each)
+local Screen = require('test.functional.ui.screen')
+local clear = helpers.clear
+local command = helpers.command
+local eq = helpers.eq
+local shallowcopy = global_helpers.shallowcopy
+
+describe('ui receives option updates', function()
+  local screen
+
+  local function reset(opts, ...)
+    local defaults = {
+      ambiwidth='single',
+      arabicshape=true,
+      emoji=true,
+      guifont='',
+      guifontset='',
+      guifontwide='',
+      linespace=0,
+      showtabline=1,
+      termguicolors=false,
+      ext_cmdline=false,
+      ext_popupmenu=false,
+      ext_tabline=false,
+      ext_wildmenu=false,
+      ext_linegrid=false,
+      ext_hlstate=false,
+      ext_multigrid=false,
+    }
+
+    clear(...)
+    screen = Screen.new(20,5)
+    screen:attach(opts)
+    -- NB: UI test suite can be run in both "linegrid" and legacy grid mode.
+    -- In both cases check that the received value is the one requested.
+    defaults.ext_linegrid = screen._options.ext_linegrid or false
+    return defaults
+  end
+
+  after_each(function()
+    screen:detach()
+  end)
+
+  it("for defaults", function()
+    local expected = reset()
+    screen:expect(function()
+      eq(expected, screen.options)
+    end)
+  end)
+
+  it("when setting options", function()
+    local expected = reset()
+    local defaults = shallowcopy(expected)
+
+    command("set termguicolors")
+    expected.termguicolors = true
+    screen:expect(function()
+      eq(expected, screen.options)
+    end)
+
+    command("set guifont=Comic\\ Sans")
+    expected.guifont = "Comic Sans"
+    screen:expect(function()
+      eq(expected, screen.options)
+    end)
+
+    command("set showtabline=0")
+    expected.showtabline = 0
+    screen:expect(function()
+      eq(expected, screen.options)
+    end)
+
+    command("set linespace=13")
+    expected.linespace = 13
+    screen:expect(function()
+      eq(expected, screen.options)
+    end)
+
+    command("set linespace=-11")
+    expected.linespace = -11
+    screen:expect(function()
+      eq(expected, screen.options)
+    end)
+
+    command("set all&")
+    screen:expect(function()
+      eq(defaults, screen.options)
+    end)
+  end)
+
+  it('with UI extensions', function()
+    local expected = reset({ext_cmdline=true, ext_wildmenu=true})
+
+    expected.ext_cmdline = true
+    expected.ext_wildmenu = true
+    screen:expect(function()
+      eq(expected, screen.options)
+    end)
+
+    screen:set_option('ext_popupmenu', true)
+    expected.ext_popupmenu = true
+    screen:expect(function()
+      eq(expected, screen.options)
+    end)
+
+    screen:set_option('ext_wildmenu', false)
+    expected.ext_wildmenu = false
+    screen:expect(function()
+      eq(expected, screen.options)
+    end)
+  end)
+
+  local function startup_test(headless)
+    local expected = reset(nil,{headless=headless,args={'--cmd', 'set guifont=Comic\\ Sans\\ 12'}})
+    expected.guifont = "Comic Sans 12"
+    screen:expect(function()
+      eq(expected, screen.options)
+    end)
+  end
+
+  it('from startup options with --headless', function() startup_test(true) end)
+  it('from startup options with --embed', function() startup_test(false) end)
+end)