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local helpers = require('test.functional.helpers')(after_each)
local mpack = require('mpack')
local clear, funcs, eq = helpers.clear, helpers.funcs, helpers.eq
local call = helpers.call
local meths = helpers.meths
local function read_mpack_file(fname)
local fd = io.open(fname, 'rb')
if fd == nil then
return nil
end
local data = fd:read('*a')
fd:close()
local unpack = mpack.Unpacker()
return unpack(data)
end
describe("api_info()['version']", function()
before_each(clear)
it("returns API level", function()
local version = call('api_info')['version']
local current = version['api_level']
local compat = version['api_compatible']
eq("number", type(current))
eq("number", type(compat))
assert(current >= compat)
end)
it("returns Nvim version", function()
local version = call('api_info')['version']
local major = version['major']
local minor = version['minor']
local patch = version['patch']
local prerelease = version['prerelease']
eq("number", type(major))
eq("number", type(minor))
eq("number", type(patch))
eq("boolean", type(prerelease))
eq(1, funcs.has("nvim-"..major.."."..minor.."."..patch))
eq(0, funcs.has("nvim-"..major.."."..minor.."."..(patch + 1)))
eq(0, funcs.has("nvim-"..major.."."..(minor + 1).."."..patch))
eq(0, funcs.has("nvim-"..(major + 1).."."..minor.."."..patch))
end)
end)
describe("api metadata", function()
before_each(clear)
local function name_table(entries)
local by_name = {}
for _,e in ipairs(entries) do
by_name[e.name] = e
end
return by_name
end
-- Remove metadata that is not essential to backwards-compatibility.
local function filter_function_metadata(f)
f.deprecated_since = nil
for idx, _ in ipairs(f.parameters) do
f.parameters[idx][2] = '' -- Remove parameter name.
end
if string.sub(f.name, 1, 4) ~= "nvim" then
f.method = nil
end
return f
end
local function check_ui_event_compatible(old_e, new_e)
-- check types of existing params are the same
-- adding parameters is ok, but removing params is not (gives nil error)
eq(old_e.since, new_e.since, old_e.name)
for i,p in ipairs(old_e.parameters) do
eq(new_e.parameters[i][1], p[1], old_e.name)
end
end
-- Level 0 represents methods from 0.1.5 and earlier, when 'since' was not
-- yet defined, and metadata was not filtered of internal keys like 'async'.
local function clean_level_0(metadata)
for _, f in ipairs(metadata.functions) do
f.can_fail = nil
f.async = nil
f.receives_channel_id = nil
f.since = 0
end
end
local api, compat, stable, api_level
local old_api = {}
setup(function()
clear() -- Ensure a session before requesting api_info.
api = meths.get_api_info()[2]
compat = api.version.api_compatible
api_level = api.version.api_level
if api.version.api_prerelease then
stable = api_level-1
else
stable = api_level
end
for level = compat, stable do
local path = ('test/functional/fixtures/api_level_'..
tostring(level)..'.mpack')
old_api[level] = read_mpack_file(path)
if old_api[level] == nil then
local errstr = "missing metadata fixture for stable level "..level..". "
if level == api_level and not api.version.api_prerelease then
errstr = (errstr.."If NVIM_API_CURRENT was bumped, "..
"don't forget to set NVIM_API_PRERELEASE to true.")
end
error(errstr)
end
if level == 0 then
clean_level_0(old_api[level])
end
end
end)
it("functions are compatible with old metadata or have new level", function()
local funcs_new = name_table(api.functions)
local funcs_compat = {}
for level = compat, stable do
for _,f in ipairs(old_api[level].functions) do
if funcs_new[f.name] == nil then
if f.since >= compat then
error('function '..f.name..' was removed but exists in level '..
f.since..' which nvim should be compatible with')
end
else
eq(filter_function_metadata(f),
filter_function_metadata(funcs_new[f.name]))
end
end
funcs_compat[level] = name_table(old_api[level].functions)
end
for _,f in ipairs(api.functions) do
if f.since <= stable then
local f_old = funcs_compat[f.since][f.name]
if f_old == nil then
if string.sub(f.name, 1, 4) == "nvim" then
local errstr = ("function "..f.name.." has too low since value. "..
"For new functions set it to "..(stable+1)..".")
if not api.version.api_prerelease then
errstr = (errstr.." Also bump NVIM_API_CURRENT and set "..
"NVIM_API_PRERELEASE to true in CMakeLists.txt.")
end
error(errstr)
else
error("function name '"..f.name.."' doesn't begin with 'nvim_'")
end
end
elseif f.since > api_level then
if api.version.api_prerelease then
error("New function "..f.name.." should use since value "..
api_level)
else
error("function "..f.name.." has since value > api_level. "..
"Bump NVIM_API_CURRENT and set "..
"NVIM_API_PRERELEASE to true in CMakeLists.txt.")
end
end
end
end)
it("UI events are compatible with old metadata or have new level", function()
local ui_events_new = name_table(api.ui_events)
local ui_events_compat = {}
-- UI events were formalized in level 3
for level = 3, stable do
for _,e in ipairs(old_api[level].ui_events) do
local new_e = ui_events_new[e.name]
if new_e ~= nil then
check_ui_event_compatible(e, new_e)
end
end
ui_events_compat[level] = name_table(old_api[level].ui_events)
end
for _,e in ipairs(api.ui_events) do
if e.since <= stable then
local e_old = ui_events_compat[e.since][e.name]
if e_old == nil then
local errstr = ("UI event "..e.name.." has too low since value. "..
"For new events set it to "..(stable+1)..".")
if not api.version.api_prerelease then
errstr = (errstr.." Also bump NVIM_API_CURRENT and set "..
"NVIM_API_PRERELEASE to true in CMakeLists.txt.")
end
error(errstr)
end
elseif e.since > api_level then
if api.version.api_prerelease then
error("New UI event "..e.name.." should use since value "..
api_level)
else
error("UI event "..e.name.." has since value > api_level. "..
"Bump NVIM_API_CURRENT and set "..
"NVIM_API_PRERELEASE to true in CMakeLists.txt.")
end
end
end
end)
it("ui_options are preserved from older levels", function()
local available_options = {}
for _, option in ipairs(api.ui_options) do
available_options[option] = true
end
-- UI options were versioned from level 4
for level = 4, stable do
for _, option in ipairs(old_api[level].ui_options) do
if not available_options[option] then
error("UI option "..option.." from stable metadata is missing")
end
end
end
end)
end)
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