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feat(shada): restore Blob globals properly

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As Strings and Blobs are encoded as msgpack BINs, the current ShaDa
implementation will restore global Blob variables as Strings (or msgpack
special dicts if they contain NULs).

Encode an additional element with Blob globals to differentiate them
from Strings so that we can restore them with the correct type.

Adjust variables_spec.lua's autotest() to also check for proper type.
This commit is contained in:
Sean Dewar
2021-07-30 15:23:37 +01:00
parent af6f454f5c
commit ef729fb15b
3 changed files with 46 additions and 7 deletions
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5
test/functional/shada/errors_spec.lua
View File

@@ -342,6 +342,11 @@ describe('ShaDa error handling', function()
eq('Vim(rshada):E575: Error while reading ShaDa file: variable entry at position 0 has wrong variable name type', exc_exec(sdrcmd()))
end)
it('fails on variable item with BIN value and type value != VAR_TYPE_BLOB', function()
wshada('\006\000\007\147\196\001\065\196\000\000')
eq('Vim(rshada):E575: Error while reading ShaDa file: variable entry at position 0 has wrong variable type', exc_exec(sdrcmd()))
end)
it('fails on replacement item with NIL value', function()
wshada('\003\000\001\192')
eq('Vim(rshada):E575: Error while reading ShaDa file: sub string entry at position 0 is not an array', exc_exec(sdrcmd()))

8
test/functional/shada/variables_spec.lua
View File

@@ -1,7 +1,7 @@
-- ShaDa variables saving/reading support
local helpers = require('test.functional.helpers')(after_each)
local meths, funcs, nvim_command, eq =
helpers.meths, helpers.funcs, helpers.command, helpers.eq
local meths, funcs, nvim_command, eq, eval =
helpers.meths, helpers.funcs, helpers.command, helpers.eq, helpers.eval
local shada_helpers = require('test.functional.shada.helpers')
local reset, clear = shada_helpers.reset, shada_helpers.clear
@@ -30,10 +30,12 @@ describe('ShaDa support code', function()
else
meths.set_var(varname, varval)
end
local vartype = eval('type(g:' .. varname .. ')')
-- Exit during `reset` is not a regular exit: it does not write shada
-- automatically
nvim_command('qall')
reset('set shada+=!')
eq(vartype, eval('type(g:' .. varname .. ')'))
eq(varval, meths.get_var(varname))
end)
end
@@ -47,6 +49,8 @@ describe('ShaDa support code', function()
autotest('false', 'FALSEVAR', false)
autotest('null', 'NULLVAR', 'v:null', true)
autotest('ext', 'EXTVAR', '{"_TYPE": v:msgpack_types.ext, "_VAL": [2, ["", ""]]}', true)
autotest('blob', 'BLOBVAR', '0z12ab34cd', true)
autotest('blob (with NULs)', 'BLOBVARNULS', '0z004e554c7300', true)
it('does not read back variables without `!` in &shada', function()
meths.set_var('STRVAR', 'foo')