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lua: vim.wait allows control of fast events (#13053)

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* lua: vim.wait allows control of fast events

* fixup: remove requirement of function for easier waiting

* fixup: lint

* fixup: bfredl comments
This commit is contained in:
TJ DeVries
2020-10-06 12:58:05 -04:00
committed by GitHub
parent 07fde6c394
commit 7b89353985
3 changed files with 86 additions and 25 deletions
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51
test/functional/lua/vim_spec.lua
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@@ -1214,6 +1214,23 @@ describe('lua stdlib', function()
]])
end)
it('should not process non-fast events when commanded', function()
eq({wait_result = false}, exec_lua[[
start_time = get_time()
vim.g.timer_result = false
timer = vim.loop.new_timer()
timer:start(100, 0, vim.schedule_wrap(function()
vim.g.timer_result = true
end))
wait_result = vim.wait(300, function() return vim.g.timer_result end, nil, true)
return {
wait_result = wait_result,
}
]])
end)
it('should work with vim.defer_fn', function()
eq({time = true, wait_result = true}, exec_lua[[
start_time = get_time()
@@ -1228,15 +1245,6 @@ describe('lua stdlib', function()
]])
end)
it('should require functions to be passed', function()
local pcall_result = exec_lua [[
return {pcall(function() vim.wait(1000, 13) end)}
]]
eq(pcall_result[1], false)
matches('condition must be a function', pcall_result[2])
end)
it('should not crash when callback errors', function()
local pcall_result = exec_lua [[
return {pcall(function() vim.wait(1000, function() error("As Expected") end) end)}
@@ -1246,6 +1254,31 @@ describe('lua stdlib', function()
matches('As Expected', pcall_result[2])
end)
it('if callback is passed, it must be a function', function()
local pcall_result = exec_lua [[
return {pcall(function() vim.wait(1000, 13) end)}
]]
eq(pcall_result[1], false)
matches('if passed, condition must be a function', pcall_result[2])
end)
it('should allow waiting with no callback, explicit', function()
eq(true, exec_lua [[
local start_time = vim.loop.hrtime()
vim.wait(50, nil)
return vim.loop.hrtime() - start_time > 25000
]])
end)
it('should allow waiting with no callback, implicit', function()
eq(true, exec_lua [[
local start_time = vim.loop.hrtime()
vim.wait(50)
return vim.loop.hrtime() - start_time > 25000
]])
end)
it('should call callbacks exactly once if they return true immediately', function()
eq(true, exec_lua [[
vim.g.wait_count = 0