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-- Test suite for testing interactions with API bindings
local helpers = require('test.functional.helpers')(after_each)
local command = helpers.command
local meths = helpers.meths
local clear = helpers.clear
local eq = helpers.eq
local exec_lua = helpers.exec_lua
local feed = helpers.feed
local origlines = {"original line 1",
"original line 2",
"original line 3",
"original line 4",
"original line 5",
"original line 6"}
describe('lua: buffer event callbacks', function()
before_each(function()
clear()
exec_lua([[
local events = {}
function test_register(bufnr, id, changedtick)
local function callback(...)
table.insert(events, {id, ...})
if test_unreg == id then
return true
end
end
local opts = {on_lines=callback, on_detach=callback}
if changedtick then
opts.on_changedtick = callback
end
vim.api.nvim_buf_attach(bufnr, false, opts)
end
function get_events()
local ret_events = events
events = {}
return ret_events
end
]])
end)
-- verifying the sizes with nvim_buf_get_offset is nice (checks we cannot
-- assert the wrong thing), but masks errors with unflushed lines (as
-- nvim_buf_get_offset forces a flush of the memline). To be safe run the
-- test both ways.
local function check(verify)
local lastsize
meths.buf_set_lines(0, 0, -1, true, origlines)
if verify then
lastsize = meths.buf_get_offset(0, meths.buf_line_count(0))
end
exec_lua("return test_register(...)", 0, "test1")
local tick = meths.buf_get_changedtick(0)
local verify_name = "test1"
local function check_events(expected)
local events = exec_lua("return get_events(...)" )
eq(expected, events)
if verify then
for _, event in ipairs(events) do
if event[1] == verify_name and event[2] == "lines" then
local startline, endline = event[5], event[7]
local newrange = meths.buf_get_offset(0, endline) - meths.buf_get_offset(0, startline)
local newsize = meths.buf_get_offset(0, meths.buf_line_count(0))
local oldrange = newrange + lastsize - newsize
eq(oldrange, event[8])
lastsize = newsize
end
end
end
end
command('normal! GyyggP')
tick = tick + 1
check_events({{ "test1", "lines", 1, tick, 0, 0, 1, 0}})
meths.buf_set_lines(0, 3, 5, true, {"changed line"})
tick = tick + 1
check_events({{ "test1", "lines", 1, tick, 3, 5, 4, 32 }})
exec_lua("return test_register(...)", 0, "test2", true)
tick = tick + 1
command('undo')
-- plugins can opt in to receive changedtick events, or choose
-- to only recieve actual changes.
check_events({{ "test1", "lines", 1, tick, 3, 4, 5, 13 },
{ "test2", "lines", 1, tick, 3, 4, 5, 13 },
{ "test2", "changedtick", 1, tick+1 } })
tick = tick + 1
-- simulate next callback returning true
exec_lua("test_unreg = 'test1'")
meths.buf_set_lines(0, 6, 7, true, {"x1","x2","x3"})
tick = tick + 1
-- plugins can opt in to receive changedtick events, or choose
-- to only recieve actual changes.
check_events({{ "test1", "lines", 1, tick, 6, 7, 9, 16 },
{ "test2", "lines", 1, tick, 6, 7, 9, 16 }})
verify_name = "test2"
meths.buf_set_lines(0, 1, 1, true, {"added"})
tick = tick + 1
check_events({{ "test2", "lines", 1, tick, 1, 1, 2, 0 }})
feed('wix')
tick = tick + 1
check_events({{ "test2", "lines", 1, tick, 4, 5, 5, 16 }})
-- check hot path for multiple insert
feed('yz')
tick = tick + 1
check_events({{ "test2", "lines", 1, tick, 4, 5, 5, 17 }})
feed('<bs>')
tick = tick + 1
check_events({{ "test2", "lines", 1, tick, 4, 5, 5, 19 }})
feed('<esc>')
command('bwipe!')
check_events({{ "test2", "detach", 1 }})
end
it('works', function()
check(false)
end)
it('works with verify', function()
check(true)
end)
end)
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