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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 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()
meths.execute_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)
it('works', function()
meths.buf_set_lines(0, 0, -1, true, origlines)
meths.execute_lua("return test_register(...)", {0, "test1"})
local tick = meths.buf_get_changedtick(0)
command('normal! GyyggP')
tick = tick + 1
eq({{ "test1", "lines", 1, tick, 0, 0, 1 }},
meths.execute_lua("return get_events(...)", {}))
meths.buf_set_lines(0, 3, 5, true, {"changed line"})
tick = tick + 1
eq({{ "test1", "lines", 1, tick, 3, 5, 4 }},
meths.execute_lua("return get_events(...)", {}))
meths.execute_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.
eq({{ "test1", "lines", 1, tick, 3, 4, 5 },
{ "test2", "lines", 1, tick, 3, 4, 5 },
{ "test2", "changedtick", 1, tick+1 } },
meths.execute_lua("return get_events(...)", {}))
tick = tick + 1
-- simulate next callback returning true
meths.execute_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.
eq({{ "test1", "lines", 1, tick, 6, 7, 9 },
{ "test2", "lines", 1, tick, 6, 7, 9 }},
meths.execute_lua("return get_events(...)", {}))
meths.buf_set_lines(0, 1, 1, true, {"added"})
tick = tick + 1
eq({{ "test2", "lines", 1, tick, 1, 1, 2 }},
meths.execute_lua("return get_events(...)", {}))
command('bwipe!')
eq({{ "test2", "detach", 1 }},
meths.execute_lua("return get_events(...)", {}))
end)
end)
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