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lua: metatable for empty dict value

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This commit is contained in:
Björn Linse
2019-11-27 20:45:41 +01:00
parent a251b588ac
commit ea4127e9a7
8 changed files with 101 additions and 4 deletions
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44
test/functional/lua/vim_spec.lua
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@@ -354,7 +354,8 @@ describe('lua stdlib', function()
end)
it('vim.tbl_islist', function()
eq(NIL, exec_lua("return vim.tbl_islist({})"))
eq(true, exec_lua("return vim.tbl_islist({})"))
eq(false, exec_lua("return vim.tbl_islist(vim.empty_dict())"))
eq(true, exec_lua("return vim.tbl_islist({'a', 'b', 'c'})"))
eq(false, exec_lua("return vim.tbl_islist({'a', '32', a='hello', b='baz'})"))
eq(false, exec_lua("return vim.tbl_islist({1, a='hello', b='baz'})"))
@@ -458,6 +459,19 @@ describe('lua stdlib', function()
]]))
eq({3, 'aa', true, NIL}, exec_lua([[return ret]]))
eq({{}, {}, false, true}, exec_lua([[
vim.rpcrequest(chan, 'nvim_exec', 'let xx = {}\nlet yy = []', false)
local dict = vim.rpcrequest(chan, 'nvim_eval', 'xx')
local list = vim.rpcrequest(chan, 'nvim_eval', 'yy')
return {dict, list, vim.tbl_islist(dict), vim.tbl_islist(list)}
]]))
exec_lua([[
vim.rpcrequest(chan, 'nvim_set_var', 'aa', {})
vim.rpcrequest(chan, 'nvim_set_var', 'bb', vim.empty_dict())
]])
eq({1, 1}, eval('[type(g:aa) == type([]), type(g:bb) == type({})]'))
-- error handling
eq({false, 'Invalid channel: 23'},
exec_lua([[return {pcall(vim.rpcrequest, 23, 'foo')}]]))
@@ -486,7 +500,7 @@ describe('lua stdlib', function()
})
screen:attach()
exec_lua([[
local timer = vim.loop.new_timer()
timer = vim.loop.new_timer()
timer:start(20, 0, function ()
-- notify ok (executed later when safe)
vim.rpcnotify(chan, 'nvim_set_var', 'yy', {3, vim.NIL})
@@ -505,6 +519,32 @@ describe('lua stdlib', function()
]]}
feed('<cr>')
eq({3, NIL}, meths.get_var('yy'))
exec_lua([[timer:close()]])
end)
it('vim.empty_dict()', function()
eq({true, false, true, true}, exec_lua([[
vim.api.nvim_set_var('listy', {})
vim.api.nvim_set_var('dicty', vim.empty_dict())
local listy = vim.fn.eval("listy")
local dicty = vim.fn.eval("dicty")
return {vim.tbl_islist(listy), vim.tbl_islist(dicty), next(listy) == nil, next(dicty) == nil}
]]))
-- vim.empty_dict() gives new value each time
-- equality is not overriden (still by ref)
-- non-empty table uses the usual heuristics (ignores the tag)
eq({false, {"foo"}, {namey="bar"}}, exec_lua([[
local aa = vim.empty_dict()
local bb = vim.empty_dict()
local equally = (aa == bb)
aa[1] = "foo"
bb["namey"] = "bar"
return {equally, aa, bb}
]]))
eq("{ {}, vim.empty_dict() }", exec_lua("return vim.inspect({{}, vim.empty_dict()})"))
end)
it('vim.validate', function()