test: reorg #15698

Problem:
Subdirectories like "visual", "insert", "normal" encourage people to
separate *related* tests for no good reason.  Typically the _mode_ is
not the relevant topic of a test (and when it is, _then_ create
an appropriate describe() or it()).

Solution:
- Delete the various `test/functional/<mode>/` subdirectories, move
  their tests to more meaningful topics.
- Rename `…/normal/` to `…/editor/`.
  - Move or merge `…/visual/*` and `…/insert/*` tests into here where
    appropriate.
- Rename `…/eval/` to `…/vimscript/`.
  - Move `…/viml/*` into here also.

* test(reorg): insert/* => editor/mode_insert_spec.lua
* test(reorg): cmdline/* => editor/mode_cmdline_spec.lua
* test(reorg): eval core tests => eval_spec.lua

1 files changed, 755 insertions, 0 deletions

diff --git a/test/functional/vimscript/msgpack_functions_spec.lua b/test/functional/vimscript/msgpack_functions_spec.lua
new file mode 100644
index 0000000000..837b629858
--- /dev/null
+++ b/test/functional/vimscript/msgpack_functions_spec.lua
@@ -0,0 +1,755 @@
+local helpers = require('test.functional.helpers')(after_each)
+local clear = helpers.clear
+local funcs = helpers.funcs
+local eval, eq = helpers.eval, helpers.eq
+local command = helpers.command
+local nvim = helpers.nvim
+local exc_exec = helpers.exc_exec
+
+describe('msgpack*() functions', function()
+  before_each(clear)
+
+  local obj_test = function(msg, obj)
+    it(msg, function()
+      nvim('set_var', 'obj', obj)
+      eq(obj, eval('msgpackparse(msgpackdump(g:obj))'))
+      eq(obj, eval('msgpackparse(msgpackdump(g:obj, "B"))'))
+    end)
+  end
+
+  -- Regression test: msgpack_list_write was failing to write buffer with zero
+  -- length.
+  obj_test('are able to dump and restore {"file": ""}', {{file=''}})
+  -- Regression test: msgpack_list_write was failing to write buffer with NL at
+  -- the end.
+  obj_test('are able to dump and restore {0, "echo mpack"}', {{0, 'echo mpack'}})
+  obj_test('are able to dump and restore "Test\\n"', {'Test\n'})
+  -- Regression test: msgpack_list_write was failing to write buffer with NL
+  -- inside.
+  obj_test('are able to dump and restore "Test\\nTest 2"', {'Test\nTest 2'})
+  -- Test that big objects (requirement: dump to something that is bigger then
+  -- IOSIZE) are also fine. This particular object is obtained by concatenating
+  -- 5 identical shada files.
+  local big_obj = {
+    1, 1436711454, 78, {
+      encoding="utf-8",
+      max_kbyte=10,
+      pid=19269,
+      version="NVIM 0.0.0-alpha+201507121634"
+    },
+    8, 1436711451, 40, { file="/home/zyx/.nvim/shada/main.shada" },
+    8, 1436711391, 8, { file="" },
+    4, 1436700940, 30, { 0, "call mkdir('/tmp/tty/tty')" },
+    4, 1436701355, 35, { 0, "call mkdir('/tmp/tty/tty', 'p')" },
+    4, 1436701368, 24, { 0, "call mkdir('/', 'p')" },
+    4, 1436701375, 26, { 0, "call mkdir('/tty/tty')" },
+    4, 1436701383, 30, { 0, "call mkdir('/tty/tty/tty')" },
+    4, 1436701407, 35, { 0, "call mkdir('/usr/tty/tty', 'p')" },
+    4, 1436701666, 35, { 0, "call mkdir('/tty/tty/tty', 'p')" },
+    4, 1436708101, 25, { 0, "echo msgpackdump([1])" },
+    4, 1436708966, 6, { 0, "cq" },
+    4, 1436709606, 25, { 0, "echo msgpackdump([5])" },
+    4, 1436709610, 26, { 0, "echo msgpackdump([10])" },
+    4, 1436709615, 31, { 0, "echo msgpackdump([5, 5, 5])" },
+    4, 1436709618, 35, { 0, "echo msgpackdump([5, 5, 5, 10])" },
+    4, 1436709634, 57, {
+      0,
+      "echo msgpackdump([5, 5, 5, 10, [10, 20, {\"abc\": 1}]])"
+    },
+    4, 1436709651, 67, {
+      0,
+      "echo msgpackdump([5, 5, 5, 10, [10, 20, {\"abc\": 1, \"def\": 0}]])"
+    },
+    4, 1436709660, 70, {
+      0,
+      "echo msgpackdump([5, 5, 5, 10, [10, 20, {\"abc\": 1, \"def\": 0}], 0])"
+    },
+    4, 1436710095, 29, { 0, "echo msgpackparse([\"\\n\"])" },
+    4, 1436710100, 28, { 0, "echo msgpackparse([\"j\"])" },
+    4, 1436710109, 31, { 0, "echo msgpackparse([\"\", \"\"])" },
+    4, 1436710424, 33, { 0, "echo msgpackparse([\"\", \"\\n\"])" },
+    4, 1436710428, 32, { 0, "echo msgpackparse([\"\", \"j\"])" },
+    4, 1436711142, 14, { 0, "echo mpack" },
+    4, 1436711196, 45, { 0, "let lengths = map(mpack[:], 'len(v:val)')" },
+    4, 1436711206, 16, { 0, "echo lengths" },
+    4, 1436711244, 92, {
+      0,
+      ("let sum = len(lengths) - 1 | call map(copy(lengths), "
+       .. "'extend(g:, {\"sum\": sum + v:val})')")
+    },
+    4, 1436711245, 12, { 0, "echo sum" },
+    4, 1436711398, 10, { 0, "echo s" },
+    4, 1436711404, 41, { 0, "let mpack = readfile('/tmp/foo', 'b')" },
+    4, 1436711408, 41, { 0, "let shada_objects=msgpackparse(mpack)" },
+    4, 1436711415, 22, { 0, "echo shada_objects" },
+    4, 1436711451, 30, { 0, "e ~/.nvim/shada/main.shada" },
+    4, 1436711454, 6, { 0, "qa" },
+    4, 1436711442, 9, { 1, "test", 47 },
+    4, 1436711443, 15, { 1, "aontsuesan", 47 },
+    2, 1436711443, 38, { hlsearch=1, pat="aontsuesan", smartcase=1 },
+    2, 0, 31, { islast=0, pat="", smartcase=1, sub=1 },
+    3, 0, 3, { "" },
+    10, 1436711451, 40, { file="/home/zyx/.nvim/shada/main.shada" },
+    1, 1436711454, 78, {
+      encoding="utf-8",
+      max_kbyte=10,
+      pid=19269,
+      version="NVIM 0.0.0-alpha+201507121634"
+    },
+    8, 1436711451, 40, { file="/home/zyx/.nvim/shada/main.shada" },
+    8, 1436711391, 8, { file="" },
+    4, 1436700940, 30, { 0, "call mkdir('/tmp/tty/tty')" },
+    4, 1436701355, 35, { 0, "call mkdir('/tmp/tty/tty', 'p')" },
+    4, 1436701368, 24, { 0, "call mkdir('/', 'p')" },
+    4, 1436701375, 26, { 0, "call mkdir('/tty/tty')" },
+    4, 1436701383, 30, { 0, "call mkdir('/tty/tty/tty')" },
+    4, 1436701407, 35, { 0, "call mkdir('/usr/tty/tty', 'p')" },
+    4, 1436701666, 35, { 0, "call mkdir('/tty/tty/tty', 'p')" },
+    4, 1436708101, 25, { 0, "echo msgpackdump([1])" },
+    4, 1436708966, 6, { 0, "cq" },
+    4, 1436709606, 25, { 0, "echo msgpackdump([5])" },
+    4, 1436709610, 26, { 0, "echo msgpackdump([10])" },
+    4, 1436709615, 31, { 0, "echo msgpackdump([5, 5, 5])" },
+    4, 1436709618, 35, { 0, "echo msgpackdump([5, 5, 5, 10])" },
+    4, 1436709634, 57, {
+      0,
+      "echo msgpackdump([5, 5, 5, 10, [10, 20, {\"abc\": 1}]])"
+    },
+    4, 1436709651, 67, {
+      0,
+      "echo msgpackdump([5, 5, 5, 10, [10, 20, {\"abc\": 1, \"def\": 0}]])"
+    },
+    4, 1436709660, 70, {
+      0,
+      "echo msgpackdump([5, 5, 5, 10, [10, 20, {\"abc\": 1, \"def\": 0}], 0])"
+    },
+    4, 1436710095, 29, { 0, "echo msgpackparse([\"\\n\"])" },
+    4, 1436710100, 28, { 0, "echo msgpackparse([\"j\"])" },
+    4, 1436710109, 31, { 0, "echo msgpackparse([\"\", \"\"])" },
+    4, 1436710424, 33, { 0, "echo msgpackparse([\"\", \"\\n\"])" },
+    4, 1436710428, 32, { 0, "echo msgpackparse([\"\", \"j\"])" },
+    4, 1436711142, 14, { 0, "echo mpack" },
+    4, 1436711196, 45, { 0, "let lengths = map(mpack[:], 'len(v:val)')" },
+    4, 1436711206, 16, { 0, "echo lengths" },
+    4, 1436711244, 92, {
+      0,
+      ("let sum = len(lengths) - 1 | call map(copy(lengths), "
+       .. "'extend(g:, {\"sum\": sum + v:val})')")
+    },
+    4, 1436711245, 12, { 0, "echo sum" },
+    4, 1436711398, 10, { 0, "echo s" },
+    4, 1436711404, 41, { 0, "let mpack = readfile('/tmp/foo', 'b')" },
+    4, 1436711408, 41, { 0, "let shada_objects=msgpackparse(mpack)" },
+    4, 1436711415, 22, { 0, "echo shada_objects" },
+    4, 1436711451, 30, { 0, "e ~/.nvim/shada/main.shada" },
+    4, 1436711454, 6, { 0, "qa" },
+    4, 1436711442, 9, { 1, "test", 47 },
+    4, 1436711443, 15, { 1, "aontsuesan", 47 },
+    2, 1436711443, 38, { hlsearch=1, pat="aontsuesan", smartcase=1 },
+    2, 0, 31, { islast=0, pat="", smartcase=1, sub=1 },
+    3, 0, 3, { "" },
+    10, 1436711451, 40, { file="/home/zyx/.nvim/shada/main.shada" },
+    1, 1436711454, 78, {
+      encoding="utf-8",
+      max_kbyte=10,
+      pid=19269,
+      version="NVIM 0.0.0-alpha+201507121634"
+    },
+    8, 1436711451, 40, { file="/home/zyx/.nvim/shada/main.shada" },
+    8, 1436711391, 8, { file="" },
+    4, 1436700940, 30, { 0, "call mkdir('/tmp/tty/tty')" },
+    4, 1436701355, 35, { 0, "call mkdir('/tmp/tty/tty', 'p')" },
+    4, 1436701368, 24, { 0, "call mkdir('/', 'p')" },
+    4, 1436701375, 26, { 0, "call mkdir('/tty/tty')" },
+    4, 1436701383, 30, { 0, "call mkdir('/tty/tty/tty')" },
+    4, 1436701407, 35, { 0, "call mkdir('/usr/tty/tty', 'p')" },
+    4, 1436701666, 35, { 0, "call mkdir('/tty/tty/tty', 'p')" },
+    4, 1436708101, 25, { 0, "echo msgpackdump([1])" },
+    4, 1436708966, 6, { 0, "cq" },
+    4, 1436709606, 25, { 0, "echo msgpackdump([5])" },
+    4, 1436709610, 26, { 0, "echo msgpackdump([10])" },
+    4, 1436709615, 31, { 0, "echo msgpackdump([5, 5, 5])" },
+    4, 1436709618, 35, { 0, "echo msgpackdump([5, 5, 5, 10])" },
+    4, 1436709634, 57, {
+      0,
+      "echo msgpackdump([5, 5, 5, 10, [10, 20, {\"abc\": 1}]])"
+    },
+    4, 1436709651, 67, {
+      0,
+      "echo msgpackdump([5, 5, 5, 10, [10, 20, {\"abc\": 1, \"def\": 0}]])"
+    },
+    4, 1436709660, 70, {
+      0,
+      "echo msgpackdump([5, 5, 5, 10, [10, 20, {\"abc\": 1, \"def\": 0}], 0])"
+    },
+    4, 1436710095, 29, { 0, "echo msgpackparse([\"\\n\"])" },
+    4, 1436710100, 28, { 0, "echo msgpackparse([\"j\"])" },
+    4, 1436710109, 31, { 0, "echo msgpackparse([\"\", \"\"])" },
+    4, 1436710424, 33, { 0, "echo msgpackparse([\"\", \"\\n\"])" },
+    4, 1436710428, 32, { 0, "echo msgpackparse([\"\", \"j\"])" },
+    4, 1436711142, 14, { 0, "echo mpack" },
+    4, 1436711196, 45, { 0, "let lengths = map(mpack[:], 'len(v:val)')" },
+    4, 1436711206, 16, { 0, "echo lengths" },
+    4, 1436711244, 92, {
+      0,
+      ("let sum = len(lengths) - 1 | call map(copy(lengths), "
+       .. "'extend(g:, {\"sum\": sum + v:val})')")
+    },
+    4, 1436711245, 12, { 0, "echo sum" },
+    4, 1436711398, 10, { 0, "echo s" },
+    4, 1436711404, 41, { 0, "let mpack = readfile('/tmp/foo', 'b')" },
+    4, 1436711408, 41, { 0, "let shada_objects=msgpackparse(mpack)" },
+    4, 1436711415, 22, { 0, "echo shada_objects" },
+    4, 1436711451, 30, { 0, "e ~/.nvim/shada/main.shada" },
+    4, 1436711454, 6, { 0, "qa" },
+    4, 1436711442, 9, { 1, "test", 47 },
+    4, 1436711443, 15, { 1, "aontsuesan", 47 },
+    2, 1436711443, 38, { hlsearch=1, pat="aontsuesan", smartcase=1 },
+    2, 0, 31, { islast=0, pat="", smartcase=1, sub=1 },
+    3, 0, 3, { "" },
+    10, 1436711451, 40, { file="/home/zyx/.nvim/shada/main.shada" },
+    1, 1436711454, 78, {
+      encoding="utf-8",
+      max_kbyte=10,
+      pid=19269,
+      version="NVIM 0.0.0-alpha+201507121634"
+    },
+    8, 1436711451, 40, { file="/home/zyx/.nvim/shada/main.shada" },
+    8, 1436711391, 8, { file="" },
+    4, 1436700940, 30, { 0, "call mkdir('/tmp/tty/tty')" },
+    4, 1436701355, 35, { 0, "call mkdir('/tmp/tty/tty', 'p')" },
+    4, 1436701368, 24, { 0, "call mkdir('/', 'p')" },
+    4, 1436701375, 26, { 0, "call mkdir('/tty/tty')" },
+    4, 1436701383, 30, { 0, "call mkdir('/tty/tty/tty')" },
+    4, 1436701407, 35, { 0, "call mkdir('/usr/tty/tty', 'p')" },
+    4, 1436701666, 35, { 0, "call mkdir('/tty/tty/tty', 'p')" },
+    4, 1436708101, 25, { 0, "echo msgpackdump([1])" },
+    4, 1436708966, 6, { 0, "cq" },
+    4, 1436709606, 25, { 0, "echo msgpackdump([5])" },
+    4, 1436709610, 26, { 0, "echo msgpackdump([10])" },
+    4, 1436709615, 31, { 0, "echo msgpackdump([5, 5, 5])" },
+    4, 1436709618, 35, { 0, "echo msgpackdump([5, 5, 5, 10])" },
+    4, 1436709634, 57, {
+      0,
+      "echo msgpackdump([5, 5, 5, 10, [10, 20, {\"abc\": 1}]])"
+    },
+    4, 1436709651, 67, {
+      0,
+      "echo msgpackdump([5, 5, 5, 10, [10, 20, {\"abc\": 1, \"def\": 0}]])"
+    },
+    4, 1436709660, 70, {
+      0,
+      "echo msgpackdump([5, 5, 5, 10, [10, 20, {\"abc\": 1, \"def\": 0}], 0])"
+    },
+    4, 1436710095, 29, { 0, "echo msgpackparse([\"\\n\"])" },
+    4, 1436710100, 28, { 0, "echo msgpackparse([\"j\"])" },
+    4, 1436710109, 31, { 0, "echo msgpackparse([\"\", \"\"])" },
+    4, 1436710424, 33, { 0, "echo msgpackparse([\"\", \"\\n\"])" },
+    4, 1436710428, 32, { 0, "echo msgpackparse([\"\", \"j\"])" },
+    4, 1436711142, 14, { 0, "echo mpack" },
+    4, 1436711196, 45, { 0, "let lengths = map(mpack[:], 'len(v:val)')" },
+    4, 1436711206, 16, { 0, "echo lengths" },
+    4, 1436711244, 92, {
+      0,
+      ("let sum = len(lengths) - 1 | call map(copy(lengths), "
+       .. "'extend(g:, {\"sum\": sum + v:val})')")
+    },
+    4, 1436711245, 12, { 0, "echo sum" },
+    4, 1436711398, 10, { 0, "echo s" },
+    4, 1436711404, 41, { 0, "let mpack = readfile('/tmp/foo', 'b')" },
+    4, 1436711408, 41, { 0, "let shada_objects=msgpackparse(mpack)" },
+    4, 1436711415, 22, { 0, "echo shada_objects" },
+    4, 1436711451, 30, { 0, "e ~/.nvim/shada/main.shada" },
+    4, 1436711454, 6, { 0, "qa" },
+    4, 1436711442, 9, { 1, "test", 47 },
+    4, 1436711443, 15, { 1, "aontsuesan", 47 },
+    2, 1436711443, 38, { hlsearch=1, pat="aontsuesan", smartcase=1 },
+    2, 0, 31, { islast=0, pat="", smartcase=1, sub=1 },
+    3, 0, 3, { "" },
+    10, 1436711451, 40, { file="/home/zyx/.nvim/shada/main.shada" },
+    1, 1436711454, 78, {
+      encoding="utf-8",
+      max_kbyte=10,
+      pid=19269,
+      version="NVIM 0.0.0-alpha+201507121634"
+    },
+    8, 1436711451, 40, { file="/home/zyx/.nvim/shada/main.shada" },
+    8, 1436711391, 8, { file="" },
+    4, 1436700940, 30, { 0, "call mkdir('/tmp/tty/tty')" },
+    4, 1436701355, 35, { 0, "call mkdir('/tmp/tty/tty', 'p')" },
+    4, 1436701368, 24, { 0, "call mkdir('/', 'p')" },
+    4, 1436701375, 26, { 0, "call mkdir('/tty/tty')" },
+    4, 1436701383, 30, { 0, "call mkdir('/tty/tty/tty')" },
+    4, 1436701407, 35, { 0, "call mkdir('/usr/tty/tty', 'p')" },
+    4, 1436701666, 35, { 0, "call mkdir('/tty/tty/tty', 'p')" },
+    4, 1436708101, 25, { 0, "echo msgpackdump([1])" },
+    4, 1436708966, 6, { 0, "cq" },
+    4, 1436709606, 25, { 0, "echo msgpackdump([5])" },
+    4, 1436709610, 26, { 0, "echo msgpackdump([10])" },
+    4, 1436709615, 31, { 0, "echo msgpackdump([5, 5, 5])" },
+    4, 1436709618, 35, { 0, "echo msgpackdump([5, 5, 5, 10])" },
+    4, 1436709634, 57, {
+      0,
+      "echo msgpackdump([5, 5, 5, 10, [10, 20, {\"abc\": 1}]])"
+    },
+    4, 1436709651, 67, {
+      0,
+      "echo msgpackdump([5, 5, 5, 10, [10, 20, {\"abc\": 1, \"def\": 0}]])"
+    },
+    4, 1436709660, 70, {
+      0,
+      "echo msgpackdump([5, 5, 5, 10, [10, 20, {\"abc\": 1, \"def\": 0}], 0])"
+    },
+    4, 1436710095, 29, { 0, "echo msgpackparse([\"\\n\"])" },
+    4, 1436710100, 28, { 0, "echo msgpackparse([\"j\"])" },
+    4, 1436710109, 31, { 0, "echo msgpackparse([\"\", \"\"])" },
+    4, 1436710424, 33, { 0, "echo msgpackparse([\"\", \"\\n\"])" },
+    4, 1436710428, 32, { 0, "echo msgpackparse([\"\", \"j\"])" },
+    4, 1436711142, 14, { 0, "echo mpack" },
+    4, 1436711196, 45, { 0, "let lengths = map(mpack[:], 'len(v:val)')" },
+    4, 1436711206, 16, { 0, "echo lengths" },
+    4, 1436711244, 92, {
+      0,
+      ("let sum = len(lengths) - 1 | call map(copy(lengths), "
+       .. "'extend(g:, {\"sum\": sum + v:val})')")
+    },
+    4, 1436711245, 12, { 0, "echo sum" },
+    4, 1436711398, 10, { 0, "echo s" },
+    4, 1436711404, 41, { 0, "let mpack = readfile('/tmp/foo', 'b')" },
+    4, 1436711408, 41, { 0, "let shada_objects=msgpackparse(mpack)" },
+    4, 1436711415, 22, { 0, "echo shada_objects" },
+    4, 1436711451, 30, { 0, "e ~/.nvim/shada/main.shada" },
+    4, 1436711454, 6, { 0, "qa" },
+    4, 1436711442, 9, { 1, "test", 47 },
+    4, 1436711443, 15, { 1, "aontsuesan", 47 },
+    2, 1436711443, 38, { hlsearch=1, pat="aontsuesan", smartcase=1 },
+    2, 0, 31, { islast=0, pat="", smartcase=1, sub=1 },
+    3, 0, 3, { "" },
+    10, 1436711451, 40, { file="/home/zyx/.nvim/shada/main.shada" }
+  }
+  obj_test('are able to dump and restore rather big object', big_obj)
+
+  obj_test('are able to dump and restore floating-point value', {0.125})
+
+  it('can restore and dump UINT64_MAX', function()
+    command('let dumped = ["\\xCF" . repeat("\\xFF", 8)]')
+    command('let parsed = msgpackparse(dumped)')
+    command('let dumped2 = msgpackdump(parsed)')
+    eq(1, eval('type(parsed[0]) == type(0) ' ..
+               '|| parsed[0]._TYPE is v:msgpack_types.integer'))
+    if eval('type(parsed[0]) == type(0)') == 1 then
+      command('call assert_equal(0xFFFFFFFFFFFFFFFF, parsed[0])')
+      eq({}, eval('v:errors'))
+    else
+      eq({_TYPE={}, _VAL={1, 3, 0x7FFFFFFF, 0x7FFFFFFF}}, eval('parsed[0]'))
+    end
+    eq(1, eval('dumped ==# dumped2'))
+  end)
+
+  it('can restore and dump INT64_MIN', function()
+    command('let dumped = ["\\xD3\\x80" . repeat("\\n", 7)]')
+    command('let parsed = msgpackparse(dumped)')
+    command('let dumped2 = msgpackdump(parsed)')
+    eq(1, eval('type(parsed[0]) == type(0) ' ..
+               '|| parsed[0]._TYPE is v:msgpack_types.integer'))
+    if eval('type(parsed[0]) == type(0)') == 1 then
+      command('call assert_equal(-0x7fffffffffffffff - 1, parsed[0])')
+      eq({}, eval('v:errors'))
+    else
+      eq({_TYPE={}, _VAL={-1, 2, 0, 0}}, eval('parsed[0]'))
+    end
+    eq(1, eval('dumped ==# dumped2'))
+  end)
+
+  it('can restore and dump BIN string with zero byte', function()
+    command('let dumped = ["\\xC4\\x01\\n"]')
+    command('let parsed = msgpackparse(dumped)')
+    command('let dumped2 = msgpackdump(parsed)')
+    eq({'\000'}, eval('parsed'))
+    eq(1, eval('dumped ==# dumped2'))
+  end)
+
+  it('can restore and dump STR string with zero byte', function()
+    command('let dumped = ["\\xA1\\n"]')
+    command('let parsed = msgpackparse(dumped)')
+    command('let dumped2 = msgpackdump(parsed)')
+    eq({{_TYPE={}, _VAL={'\n'}}}, eval('parsed'))
+    eq(1, eval('parsed[0]._TYPE is v:msgpack_types.string'))
+    eq(1, eval('dumped ==# dumped2'))
+  end)
+
+  it('can restore and dump BIN string with NL', function()
+    command('let dumped = ["\\xC4\\x01", ""]')
+    command('let parsed = msgpackparse(dumped)')
+    command('let dumped2 = msgpackdump(parsed)')
+    eq({"\n"}, eval('parsed'))
+    eq(1, eval('dumped ==# dumped2'))
+  end)
+
+  it('dump and restore special mapping with floating-point value', function()
+    command('let todump = {"_TYPE": v:msgpack_types.float, "_VAL": 0.125}')
+    eq({0.125}, eval('msgpackparse(msgpackdump([todump]))'))
+  end)
+end)
+
+local blobstr = function(list)
+  local l = {}
+  for i,v in ipairs(list) do
+    l[i] = v:gsub('\n', '\000')
+  end
+  return table.concat(l, '\n')
+end
+
+-- Test msgpackparse() with a readfile()-style list and a blob argument
+local parse_eq = function(expect, list_arg)
+  local blob_expr = '0z' .. blobstr(list_arg):gsub('(.)', function(c)
+    return ('%.2x'):format(c:byte())
+  end)
+  eq(expect, funcs.msgpackparse(list_arg))
+  command('let g:parsed = msgpackparse(' .. blob_expr .. ')')
+  eq(expect, eval('g:parsed'))
+end
+
+describe('msgpackparse() function', function()
+  before_each(clear)
+
+  it('restores nil as v:null', function()
+    parse_eq(eval('[v:null]'), {'\192'})
+  end)
+
+  it('restores boolean false as v:false', function()
+    parse_eq({false}, {'\194'})
+  end)
+
+  it('restores boolean true as v:true', function()
+    parse_eq({true}, {'\195'})
+  end)
+
+  it('restores FIXSTR as special dict', function()
+    parse_eq({{_TYPE={}, _VAL={'ab'}}}, {'\162ab'})
+    eq(1, eval('g:parsed[0]._TYPE is v:msgpack_types.string'))
+  end)
+
+  it('restores BIN 8 as string', function()
+    parse_eq({'ab'}, {'\196\002ab'})
+  end)
+
+  it('restores FIXEXT1 as special dictionary', function()
+    parse_eq({{_TYPE={}, _VAL={0x10, {"", ""}}}}, {'\212\016', ''})
+    eq(1, eval('g:parsed[0]._TYPE is v:msgpack_types.ext'))
+  end)
+
+  it('restores MAP with BIN key as special dictionary', function()
+    parse_eq({{_TYPE={}, _VAL={{'a', ''}}}}, {'\129\196\001a\196\n'})
+    eq(1, eval('g:parsed[0]._TYPE is v:msgpack_types.map'))
+  end)
+
+  it('restores MAP with duplicate STR keys as special dictionary', function()
+    command('let dumped = ["\\x82\\xA1a\\xC4\\n\\xA1a\\xC4\\n"]')
+    -- FIXME Internal error bug, can't use parse_eq() here
+    command('silent! let parsed = msgpackparse(dumped)')
+    eq({{_TYPE={}, _VAL={ {{_TYPE={}, _VAL={'a'}}, ''},
+                          {{_TYPE={}, _VAL={'a'}}, ''}}} }, eval('parsed'))
+    eq(1, eval('g:parsed[0]._TYPE is v:msgpack_types.map'))
+    eq(1, eval('g:parsed[0]._VAL[0][0]._TYPE is v:msgpack_types.string'))
+    eq(1, eval('g:parsed[0]._VAL[1][0]._TYPE is v:msgpack_types.string'))
+  end)
+
+  it('restores MAP with MAP key as special dictionary', function()
+    parse_eq({{_TYPE={}, _VAL={{{}, ''}}}}, {'\129\128\196\n'})
+    eq(1, eval('g:parsed[0]._TYPE is v:msgpack_types.map'))
+  end)
+
+  it('msgpackparse(systemlist(...)) does not segfault. #3135', function()
+    local cmd = "sort(keys(msgpackparse(systemlist('"
+      ..helpers.nvim_prog.." --api-info'))[0]))"
+    eval(cmd)
+    eval(cmd)  -- do it again (try to force segfault)
+    local api_info = eval(cmd)  -- do it again
+    eq({'error_types', 'functions', 'types',
+        'ui_events', 'ui_options', 'version'}, api_info)
+  end)
+
+  it('fails when called with no arguments', function()
+    eq('Vim(call):E119: Not enough arguments for function: msgpackparse',
+       exc_exec('call msgpackparse()'))
+  end)
+
+  it('fails when called with two arguments', function()
+    eq('Vim(call):E118: Too many arguments for function: msgpackparse',
+       exc_exec('call msgpackparse(["", ""], 1)'))
+  end)
+
+  it('fails to parse a string', function()
+    eq('Vim(call):E899: Argument of msgpackparse() must be a List or Blob',
+       exc_exec('call msgpackparse("abcdefghijklmnopqrstuvwxyz")'))
+  end)
+
+  it('fails to parse a number', function()
+    eq('Vim(call):E899: Argument of msgpackparse() must be a List or Blob',
+       exc_exec('call msgpackparse(127)'))
+  end)
+
+  it('fails to parse a dictionary', function()
+    eq('Vim(call):E899: Argument of msgpackparse() must be a List or Blob',
+       exc_exec('call msgpackparse({})'))
+  end)
+
+  it('fails to parse a funcref', function()
+    eq('Vim(call):E899: Argument of msgpackparse() must be a List or Blob',
+       exc_exec('call msgpackparse(function("tr"))'))
+  end)
+
+  it('fails to parse a partial', function()
+    command('function T() dict\nendfunction')
+    eq('Vim(call):E899: Argument of msgpackparse() must be a List or Blob',
+       exc_exec('call msgpackparse(function("T", [1, 2], {}))'))
+  end)
+
+  it('fails to parse a float', function()
+    eq('Vim(call):E899: Argument of msgpackparse() must be a List or Blob',
+       exc_exec('call msgpackparse(0.0)'))
+  end)
+
+  it('fails on incomplete msgpack string', function()
+    local expected = 'Vim(call):E475: Invalid argument: Incomplete msgpack string'
+    eq(expected, exc_exec([[call msgpackparse(["\xc4"])]]))
+    eq(expected, exc_exec([[call msgpackparse(["\xca", "\x02\x03"])]]))
+    eq(expected, exc_exec('call msgpackparse(0zc4)'))
+    eq(expected, exc_exec('call msgpackparse(0zca0a0203)'))
+  end)
+
+  it('fails when unable to parse msgpack string', function()
+    local expected = 'Vim(call):E475: Invalid argument: Failed to parse msgpack string'
+    eq(expected, exc_exec([[call msgpackparse(["\xc1"])]]))
+    eq(expected, exc_exec('call msgpackparse(0zc1)'))
+  end)
+end)
+
+describe('msgpackdump() function', function()
+  before_each(clear)
+
+  local dump_eq = function(exp_list, arg_expr)
+    eq(exp_list, eval('msgpackdump(' .. arg_expr .. ')'))
+    eq(blobstr(exp_list), eval('msgpackdump(' .. arg_expr .. ', "B")'))
+  end
+
+  it('dumps string as BIN 8', function()
+    dump_eq({'\196\004Test'}, '["Test"]')
+  end)
+
+  it('dumps blob as BIN 8', function()
+    dump_eq({'\196\005Bl\nb!'}, '[0z426c006221]')
+  end)
+
+  it('can dump generic mapping with generic mapping keys and values', function()
+    command('let todump = {"_TYPE": v:msgpack_types.map, "_VAL": []}')
+    command('let todumpv1 = {"_TYPE": v:msgpack_types.map, "_VAL": []}')
+    command('let todumpv2 = {"_TYPE": v:msgpack_types.map, "_VAL": []}')
+    command('call add(todump._VAL, [todumpv1, todumpv2])')
+    dump_eq({'\129\128\128'}, '[todump]')
+  end)
+
+  it('can dump v:true', function()
+    dump_eq({'\195'}, '[v:true]')
+  end)
+
+  it('can dump v:false', function()
+    dump_eq({'\194'}, '[v:false]')
+  end)
+
+  it('can dump v:null', function()
+    dump_eq({'\192'}, '[v:null]')
+  end)
+
+  it('can dump special bool mapping (true)', function()
+    command('let todump = {"_TYPE": v:msgpack_types.boolean, "_VAL": 1}')
+    dump_eq({'\195'}, '[todump]')
+  end)
+
+  it('can dump special bool mapping (false)', function()
+    command('let todump = {"_TYPE": v:msgpack_types.boolean, "_VAL": 0}')
+    dump_eq({'\194'}, '[todump]')
+  end)
+
+  it('can dump special nil mapping', function()
+    command('let todump = {"_TYPE": v:msgpack_types.nil, "_VAL": 0}')
+    dump_eq({'\192'}, '[todump]')
+  end)
+
+  it('can dump special ext mapping', function()
+    command('let todump = {"_TYPE": v:msgpack_types.ext, "_VAL": [5, ["",""]]}')
+    dump_eq({'\212\005', ''}, '[todump]')
+  end)
+
+  it('can dump special array mapping', function()
+    command('let todump = {"_TYPE": v:msgpack_types.array, "_VAL": [5, [""]]}')
+    dump_eq({'\146\005\145\196\n'}, '[todump]')
+  end)
+
+  it('can dump special UINT64_MAX mapping', function()
+    command('let todump = {"_TYPE": v:msgpack_types.integer}')
+    command('let todump._VAL = [1, 3, 0x7FFFFFFF, 0x7FFFFFFF]')
+    dump_eq({'\207\255\255\255\255\255\255\255\255'}, '[todump]')
+  end)
+
+  it('can dump special INT64_MIN mapping', function()
+    command('let todump = {"_TYPE": v:msgpack_types.integer}')
+    command('let todump._VAL = [-1, 2, 0, 0]')
+    dump_eq({'\211\128\n\n\n\n\n\n\n'}, '[todump]')
+  end)
+
+  it('fails to dump a function reference', function()
+    command('let Todump = function("tr")')
+    eq('Vim(call):E5004: Error while dumping msgpackdump() argument, index 0, itself: attempt to dump function reference',
+       exc_exec('call msgpackdump([Todump])'))
+  end)
+
+  it('fails to dump a partial', function()
+    command('function T() dict\nendfunction')
+    command('let Todump = function("T", [1, 2], {})')
+    eq('Vim(call):E5004: Error while dumping msgpackdump() argument, index 0, itself: attempt to dump function reference',
+       exc_exec('call msgpackdump([Todump])'))
+  end)
+
+  it('fails to dump a function reference in a list', function()
+    command('let todump = [function("tr")]')
+    eq('Vim(call):E5004: Error while dumping msgpackdump() argument, index 0, index 0: attempt to dump function reference',
+       exc_exec('call msgpackdump([todump])'))
+  end)
+
+  it('fails to dump a recursive list', function()
+    command('let todump = [[[]]]')
+    command('call add(todump[0][0], todump)')
+    eq('Vim(call):E5005: Unable to dump msgpackdump() argument, index 0: container references itself in index 0, index 0, index 0',
+       exc_exec('call msgpackdump([todump])'))
+  end)
+
+  it('fails to dump a recursive dict', function()
+    command('let todump = {"d": {"d": {}}}')
+    command('call extend(todump.d.d, {"d": todump})')
+    eq('Vim(call):E5005: Unable to dump msgpackdump() argument, index 0: container references itself in key \'d\', key \'d\', key \'d\'',
+       exc_exec('call msgpackdump([todump])'))
+  end)
+
+  it('can dump dict with two same dicts inside', function()
+    command('let inter = {}')
+    command('let todump = {"a": inter, "b": inter}')
+    dump_eq({"\130\161a\128\161b\128"}, '[todump]')
+  end)
+
+  it('can dump list with two same lists inside', function()
+    command('let inter = []')
+    command('let todump = [inter, inter]')
+    dump_eq({"\146\144\144"}, '[todump]')
+  end)
+
+  it('fails to dump a recursive list in a special dict', function()
+    command('let todump = {"_TYPE": v:msgpack_types.array, "_VAL": []}')
+    command('call add(todump._VAL, todump)')
+    eq('Vim(call):E5005: Unable to dump msgpackdump() argument, index 0: container references itself in index 0',
+       exc_exec('call msgpackdump([todump])'))
+  end)
+
+  it('fails to dump a recursive (key) map in a special dict', function()
+    command('let todump = {"_TYPE": v:msgpack_types.map, "_VAL": []}')
+    command('call add(todump._VAL, [todump, 0])')
+    eq('Vim(call):E5005: Unable to dump msgpackdump() argument, index 0: container references itself in index 0',
+       exc_exec('call msgpackdump([todump])'))
+  end)
+
+  it('fails to dump a recursive (val) map in a special dict', function()
+    command('let todump = {"_TYPE": v:msgpack_types.map, "_VAL": []}')
+    command('call add(todump._VAL, [0, todump])')
+    eq('Vim(call):E5005: Unable to dump msgpackdump() argument, index 0: container references itself in key 0 at index 0 from special map',
+       exc_exec('call msgpackdump([todump])'))
+  end)
+
+  it('fails to dump a recursive (key) map in a special dict, _VAL reference', function()
+    command('let todump = {"_TYPE": v:msgpack_types.map, "_VAL": [[[], []]]}')
+    command('call add(todump._VAL[0][0], todump._VAL)')
+    eq('Vim(call):E5005: Unable to dump msgpackdump() argument, index 0: container references itself in key [[[[...@0], []]]] at index 0 from special map, index 0',
+       exc_exec('call msgpackdump([todump])'))
+  end)
+
+  it('fails to dump a recursive (val) map in a special dict, _VAL reference', function()
+    command('let todump = {"_TYPE": v:msgpack_types.map, "_VAL": [[[], []]]}')
+    command('call add(todump._VAL[0][1], todump._VAL)')
+    eq('Vim(call):E5005: Unable to dump msgpackdump() argument, index 0: container references itself in key [] at index 0 from special map, index 0',
+       exc_exec('call msgpackdump([todump])'))
+  end)
+
+  it('fails to dump a recursive (val) special list in a special dict',
+  function()
+    command('let todump = {"_TYPE": v:msgpack_types.array, "_VAL": []}')
+    command('call add(todump._VAL, [0, todump._VAL])')
+    eq('Vim(call):E5005: Unable to dump msgpackdump() argument, index 0: container references itself in index 0, index 1',
+       exc_exec('call msgpackdump([todump])'))
+  end)
+
+  it('fails when called with no arguments', function()
+    eq('Vim(call):E119: Not enough arguments for function: msgpackdump',
+       exc_exec('call msgpackdump()'))
+  end)
+
+  it('fails when called with three arguments', function()
+    eq('Vim(call):E118: Too many arguments for function: msgpackdump',
+       exc_exec('call msgpackdump(["", ""], 1, 2)'))
+  end)
+
+  it('fails to dump a string', function()
+    eq('Vim(call):E686: Argument of msgpackdump() must be a List',
+       exc_exec('call msgpackdump("abcdefghijklmnopqrstuvwxyz")'))
+  end)
+
+  it('fails to dump a number', function()
+    eq('Vim(call):E686: Argument of msgpackdump() must be a List',
+       exc_exec('call msgpackdump(127)'))
+  end)
+
+  it('fails to dump a dictionary', function()
+    eq('Vim(call):E686: Argument of msgpackdump() must be a List',
+       exc_exec('call msgpackdump({})'))
+  end)
+
+  it('fails to dump a funcref', function()
+    eq('Vim(call):E686: Argument of msgpackdump() must be a List',
+       exc_exec('call msgpackdump(function("tr"))'))
+  end)
+
+  it('fails to dump a partial', function()
+    command('function T() dict\nendfunction')
+    eq('Vim(call):E686: Argument of msgpackdump() must be a List',
+       exc_exec('call msgpackdump(function("T", [1, 2], {}))'))
+  end)
+
+  it('fails to dump a float', function()
+    eq('Vim(call):E686: Argument of msgpackdump() must be a List',
+       exc_exec('call msgpackdump(0.0)'))
+  end)
+
+  it('fails to dump special value', function()
+    for _, val in ipairs({'v:true', 'v:false', 'v:null'}) do
+      eq('Vim(call):E686: Argument of msgpackdump() must be a List',
+        exc_exec('call msgpackdump(' .. val .. ')'))
+    end
+  end)
+
+  it('can dump NULL string', function()
+    dump_eq({'\196\n'}, '[$XXX_UNEXISTENT_VAR_XXX]')
+    dump_eq({'\196\n'}, '[{"_TYPE": v:msgpack_types.binary, "_VAL": [$XXX_UNEXISTENT_VAR_XXX]}]')
+    dump_eq({'\160'}, '[{"_TYPE": v:msgpack_types.string, "_VAL": [$XXX_UNEXISTENT_VAR_XXX]}]')
+  end)
+
+  it('can dump NULL blob', function()
+    eq({'\196\n'}, eval('msgpackdump([v:_null_blob])'))
+  end)
+
+  it('can dump NULL list', function()
+    eq({'\144'}, eval('msgpackdump([v:_null_list])'))
+  end)
+
+  it('can dump NULL dictionary', function()
+    eq({'\128'}, eval('msgpackdump([v:_null_dict])'))
+  end)
+end)