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Before calling "attach" a screen object is just a dummy container for (row, col) values whose purpose is to be sent as part of the "attach" function call anyway. Just create the screen in an attached state directly. Keep the complete (row, col, options) config together. It is still completely valid to later detach and re-attach as needed, including to another session.
73 lines
2.0 KiB
Lua
73 lines
2.0 KiB
Lua
-- To run this test:
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-- TEST_FILE=test/functional/example_spec.lua make functionaltest
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local t = require('test.testutil')
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local n = require('test.functional.testnvim')()
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local Screen = require('test.functional.ui.screen')
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local clear = n.clear
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local command = n.command
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local eq = t.eq
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local feed = n.feed
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describe('example', function()
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local screen
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before_each(function()
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clear()
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screen = Screen.new(20, 5)
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screen:set_default_attr_ids({
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[0] = { bold = true, foreground = Screen.colors.Blue },
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[1] = { bold = true, foreground = Screen.colors.Brown },
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})
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end)
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it('screen test', function()
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-- Do some stuff.
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feed('iline1<cr>line2<esc>')
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-- For debugging only: prints the current screen.
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-- screen:snapshot_util()
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-- Assert the expected state.
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screen:expect([[
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line1 |
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line^2 |
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{0:~ }|
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{0:~ }|
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]])
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end)
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it('override UI event-handler', function()
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-- Example: override the "tabline_update" UI event handler.
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--
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-- screen.lua defines default handlers for UI events, but tests
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-- may sometimes want to override a handler.
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-- The UI must declare that it wants to handle the UI events.
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-- For this example, we enable `ext_tabline`:
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screen:detach()
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screen = Screen.new(25, 5, { rgb = true, ext_tabline = true })
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-- From ":help ui" we find that `tabline_update` receives `curtab` and
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-- `tabs` objects. So we declare the UI handler like this:
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local event_tabs, event_curtab
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function screen:_handle_tabline_update(curtab, tabs)
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event_curtab, event_tabs = curtab, tabs
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end
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-- Create a tabpage...
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command('tabedit foo')
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-- Use screen:expect{condition=…} to check the result.
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screen:expect {
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condition = function()
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eq(2, event_curtab)
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eq({
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{ tab = 1, name = '[No Name]' },
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{ tab = 2, name = 'foo' },
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}, event_tabs)
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end,
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}
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end)
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end)
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