1 files changed, 54 insertions, 0 deletions
diff --git a/test/functional/ui/tabline_spec.lua b/test/functional/ui/tabline_spec.lua
new file mode 100644
index 0000000000..e8271de0bf
--- /dev/null
+++ b/test/functional/ui/tabline_spec.lua
@@ -0,0 +1,54 @@
+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
+
+  before_each(function()
+    clear()
+    screen = Screen.new(25, 5)
+    screen:attach({rgb=true, ext_tabline=true})
+    screen:set_on_event_handler(function(name, data)
+      if name == "tabline_update" then
+        event_curtab, event_tabs = unpack(data)
+      end
+    end)
+  end)
+
+  after_each(function()
+    screen:detach()
+  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([[
+      ^                         |
+      ~                        |
+      ~                        |
+      ~                        |
+                               |
+    ]], nil, nil, function()
+      eq({ id = 2 }, event_curtab)
+      eq(expected_tabs, event_tabs)
+    end)
+
+    command("tabNext")
+    screen:expect([[
+      ^                         |
+      ~                        |
+      ~                        |
+      ~                        |
+                               |
+    ]], nil, nil, function()
+      eq({ id = 1 }, event_curtab)
+      eq(expected_tabs, event_tabs)
+    end)
+  end)
+end)