neovim/test/functional/api/proc_spec.lua

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local helpers = require('test.functional.helpers')(after_each)
local clear, eq = helpers.clear, helpers.eq
local funcs = helpers.funcs
local nvim_argv = helpers.nvim_argv
local request = helpers.request
local retry = helpers.retry
describe('api', function()
before_each(clear)
describe('nvim_get_proc_children', function()
it('returns child process ids', function()
local this_pid = funcs.getpid()
local job1 = funcs.jobstart(nvim_argv)
retry(nil, nil, function()
eq(1, #request('nvim_get_proc_children', this_pid))
end)
local job2 = funcs.jobstart(nvim_argv)
retry(nil, nil, function()
eq(2, #request('nvim_get_proc_children', this_pid))
end)
funcs.jobstop(job1)
retry(nil, nil, function()
eq(1, #request('nvim_get_proc_children', this_pid))
end)
funcs.jobstop(job2)
retry(nil, nil, function()
eq(0, #request('nvim_get_proc_children', this_pid))
end)
end)
it('validates input', function()
local status, rv = pcall(request, "nvim_get_proc_children", -1)
eq(false, status)
eq("Invalid pid: -1", string.match(rv, "Invalid.*"))
status, rv = pcall(request, "nvim_get_proc_children", 0)
eq(false, status)
eq("Invalid pid: 0", string.match(rv, "Invalid.*"))
-- Assume PID 99999999 does not exist.
status, rv = pcall(request, "nvim_get_proc_children", 99999999)
eq(true, status)
eq({}, rv)
end)
end)
end)