1 files changed, 81 insertions, 0 deletions
diff --git a/test/functional/api/proc_spec.lua b/test/functional/api/proc_spec.lua
new file mode 100644
index 0000000000..d99c26b6c2
--- /dev/null
+++ b/test/functional/api/proc_spec.lua
@@ -0,0 +1,81 @@
+local helpers = require('test.functional.helpers')(after_each)
+
+local clear = helpers.clear
+local eq = helpers.eq
+local funcs = helpers.funcs
+local iswin = helpers.iswin
+local nvim_argv = helpers.nvim_argv
+local ok = helpers.ok
+local request = helpers.request
+local retry = helpers.retry
+local NIL = helpers.NIL
+
+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 99999 does not exist.
+      status, rv = pcall(request, "nvim_get_proc_children", 99999)
+      eq(true, status)
+      eq({}, rv)
+    end)
+  end)
+
+  describe('nvim_get_proc', function()
+    it('returns process info', function()
+      local pid = funcs.getpid()
+      local pinfo = request('nvim_get_proc', pid)
+      eq((iswin() and 'nvim.exe' or 'nvim'), pinfo.name)
+      ok(pinfo.pid == pid)
+      ok(type(pinfo.ppid) == 'number' and pinfo.ppid ~= pid)
+    end)
+
+    it('validates input', function()
+      local status, rv = pcall(request, "nvim_get_proc", -1)
+      eq(false, status)
+      eq("Invalid pid: -1", string.match(rv, "Invalid.*"))
+
+      status, rv = pcall(request, "nvim_get_proc", 0)
+      eq(false, status)
+      eq("Invalid pid: 0", string.match(rv, "Invalid.*"))
+
+      -- Assume PID 99999 does not exist.
+      status, rv = pcall(request, "nvim_get_proc", 99999)
+      eq(true, status)
+      eq(NIL, rv)
+    end)
+  end)
+end)