mirror of
https://github.com/neovim/neovim.git
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258 lines
8.2 KiB
Lua
258 lines
8.2 KiB
Lua
local helpers = require('test.functional.helpers')
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local clear, nvim, source = helpers.clear, helpers.nvim, helpers.source
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local eq, next_msg = helpers.eq, helpers.next_message
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local exc_exec = helpers.exc_exec
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describe('dictionary change notifications', function()
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local channel
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setup(function()
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clear()
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channel = nvim('get_api_info')[1]
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nvim('set_var', 'channel', channel)
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end)
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-- the same set of tests are applied to top-level dictionaries(g:, b:, w: and
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-- t:) and a dictionary variable, so we generate them in the following
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-- function.
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local function gentests(dict_expr, dict_expr_suffix, dict_init)
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if not dict_expr_suffix then
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dict_expr_suffix = ''
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end
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local function update(opval, key)
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if not key then
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key = 'watched'
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end
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if opval == '' then
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nvim('command', "unlet "..dict_expr..dict_expr_suffix..key)
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else
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nvim('command', "let "..dict_expr..dict_expr_suffix..key.." "..opval)
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end
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end
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local function verify_echo()
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-- helper to verify that no notifications are sent after certain change
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-- to a dict
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nvim('command', "call rpcnotify(g:channel, 'echo')")
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eq({'notification', 'echo', {}}, next_msg())
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end
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local function verify_value(vals, key)
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if not key then
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key = 'watched'
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end
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eq({'notification', 'values', {key, vals}}, next_msg())
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end
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describe('watcher', function()
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if dict_init then
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setup(function()
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source(dict_init)
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end)
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end
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before_each(function()
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source([[
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function! g:Changed(dict, key, value)
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if a:dict != ]]..dict_expr..[[ |
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throw 'invalid dict'
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endif
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call rpcnotify(g:channel, 'values', a:key, a:value)
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endfunction
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call dictwatcheradd(]]..dict_expr..[[, "watched", "g:Changed")
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call dictwatcheradd(]]..dict_expr..[[, "watched2", "g:Changed")
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]])
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end)
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after_each(function()
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source([[
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call dictwatcherdel(]]..dict_expr..[[, "watched", "g:Changed")
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call dictwatcherdel(]]..dict_expr..[[, "watched2", "g:Changed")
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]])
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update('= "test"')
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update('= "test2"', 'watched2')
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update('', 'watched2')
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update('')
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verify_echo()
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end)
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it('is not triggered when unwatched keys are updated', function()
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update('= "noop"', 'unwatched')
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update('.= "noop2"', 'unwatched')
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update('', 'unwatched')
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verify_echo()
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end)
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it('is triggered by remove()', function()
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update('= "test"')
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verify_value({new = 'test'})
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nvim('command', 'call remove('..dict_expr..', "watched")')
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verify_value({old = 'test'})
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end)
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it('is triggered by extend()', function()
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update('= "xtend"')
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verify_value({new = 'xtend'})
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nvim('command', [[
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call extend(]]..dict_expr..[[, {'watched': 'xtend2', 'watched2': 5, 'watched3': 'a'})
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]])
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verify_value({old = 'xtend', new = 'xtend2'})
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verify_value({new = 5}, 'watched2')
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update('')
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verify_value({old = 'xtend2'})
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update('', 'watched2')
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verify_value({old = 5}, 'watched2')
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update('', 'watched3')
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verify_echo()
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end)
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it('is triggered with key patterns', function()
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source([[
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call dictwatcheradd(]]..dict_expr..[[, "wat*", "g:Changed")
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]])
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update('= 1')
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verify_value({new = 1})
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verify_value({new = 1})
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update('= 3', 'watched2')
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verify_value({new = 3}, 'watched2')
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verify_value({new = 3}, 'watched2')
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verify_echo()
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source([[
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call dictwatcherdel(]]..dict_expr..[[, "wat*", "g:Changed")
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]])
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-- watch every key pattern
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source([[
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call dictwatcheradd(]]..dict_expr..[[, "*", "g:Changed")
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]])
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update('= 3', 'another_key')
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update('= 4', 'another_key')
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update('', 'another_key')
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update('= 2')
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verify_value({new = 3}, 'another_key')
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verify_value({old = 3, new = 4}, 'another_key')
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verify_value({old = 4}, 'another_key')
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verify_value({old = 1, new = 2})
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verify_value({old = 1, new = 2})
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verify_echo()
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source([[
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call dictwatcherdel(]]..dict_expr..[[, "*", "g:Changed")
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]])
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end)
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-- test a sequence of updates of different types to ensure proper memory
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-- management(with ASAN)
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local function test_updates(tests)
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it('test change sequence', function()
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local input, output
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for i = 1, #tests do
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input, output = unpack(tests[i])
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update(input)
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verify_value(output)
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end
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end)
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end
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test_updates({
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{'= 3', {new = 3}},
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{'= 6', {old = 3, new = 6}},
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{'+= 3', {old = 6, new = 9}},
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{'', {old = 9}}
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})
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test_updates({
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{'= "str"', {new = 'str'}},
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{'= "str2"', {old = 'str', new = 'str2'}},
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{'.= "2str"', {old = 'str2', new = 'str22str'}},
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{'', {old = 'str22str'}}
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})
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test_updates({
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{'= [1, 2]', {new = {1, 2}}},
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{'= [1, 2, 3]', {old = {1, 2}, new = {1, 2, 3}}},
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-- the += will update the list in place, so old and new are the same
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{'+= [4, 5]', {old = {1, 2, 3, 4, 5}, new = {1, 2, 3, 4, 5}}},
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{'', {old = {1, 2, 3, 4 ,5}}}
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})
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test_updates({
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{'= {"k": "v"}', {new = {k = 'v'}}},
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{'= {"k1": 2}', {old = {k = 'v'}, new = {k1 = 2}}},
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{'', {old = {k1 = 2}}},
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})
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end)
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end
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gentests('g:')
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gentests('b:')
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gentests('w:')
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gentests('t:')
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gentests('g:dict_var', '.', 'let g:dict_var = {}')
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describe('multiple watchers on the same dict/key', function()
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setup(function()
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source([[
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function! g:Watcher1(dict, key, value)
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call rpcnotify(g:channel, '1', a:key, a:value)
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endfunction
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function! g:Watcher2(dict, key, value)
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call rpcnotify(g:channel, '2', a:key, a:value)
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endfunction
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call dictwatcheradd(g:, "key", "g:Watcher1")
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call dictwatcheradd(g:, "key", "g:Watcher2")
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]])
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end)
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it('invokes all callbacks when the key is changed', function()
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nvim('command', 'let g:key = "value"')
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eq({'notification', '1', {'key', {new = 'value'}}}, next_msg())
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eq({'notification', '2', {'key', {new = 'value'}}}, next_msg())
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end)
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it('only removes watchers that fully match dict, key and callback', function()
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nvim('command', 'call dictwatcherdel(g:, "key", "g:Watcher1")')
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nvim('command', 'let g:key = "v2"')
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eq({'notification', '2', {'key', {old = 'value', new = 'v2'}}}, next_msg())
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end)
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end)
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describe('errors', function()
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-- WARNING: This suite depends on the above tests
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it('fails to remove if no watcher with matching callback is found', function()
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eq("Vim(call):Couldn't find a watcher matching key and callback",
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exc_exec('call dictwatcherdel(g:, "key", "g:Watcher1")'))
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end)
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it('fails to remove if no watcher with matching key is found', function()
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eq("Vim(call):Couldn't find a watcher matching key and callback",
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exc_exec('call dictwatcherdel(g:, "invalid_key", "g:Watcher2")'))
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end)
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it("fails to add/remove if the callback doesn't exist", function()
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eq("Vim(call):Function g:InvalidCb doesn't exist",
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exc_exec('call dictwatcheradd(g:, "key", "g:InvalidCb")'))
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eq("Vim(call):Function g:InvalidCb doesn't exist",
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exc_exec('call dictwatcherdel(g:, "key", "g:InvalidCb")'))
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end)
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it('fails with empty keys', function()
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eq("Vim(call):E713: Cannot use empty key for Dictionary",
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exc_exec('call dictwatcheradd(g:, "", "g:Watcher1")'))
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eq("Vim(call):E713: Cannot use empty key for Dictionary",
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exc_exec('call dictwatcherdel(g:, "", "g:Watcher1")'))
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end)
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it('fails to replace a watcher function', function()
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source([[
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function! g:ReplaceWatcher2()
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function! g:Watcher2()
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endfunction
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endfunction
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]])
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eq("Vim(function):E127: Cannot redefine function Watcher2: It is in use",
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exc_exec('call g:ReplaceWatcher2()'))
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end)
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end)
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end)
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