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language_spec.lua
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language_spec.lua
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--[[
Tests for src/middleware/language.lua
Tests user language selection, group language override.
]]
describe('middleware.language', function()
local language_mw
local test_helper = require('spec.helpers.test_helper')
local env, ctx, message
local mock_en_gb = { errors = { connection = 'Connection error.' } }
local mock_de_de = { errors = { connection = 'Verbindungsfehler.' } }
local mock_pt_br = { errors = { connection = 'Erro de conexao.' } }
before_each(function()
package.loaded['src.middleware.language'] = nil
package.loaded['src.core.i18n'] = {
get = function(code)
if code == 'de_de' then return mock_de_de end
if code == 'pt_br' then return mock_pt_br end
return mock_en_gb
end,
exists = function(code)
return code == 'en_gb' or code == 'de_de' or code == 'pt_br'
end,
}
package.loaded['src.core.session'] = {
get_setting = function(id, key)
-- Return nil by default, tests override via redis
return env.redis.get('cache:setting:' .. tostring(id) .. ':' .. key)
end,
}
language_mw = require('src.middleware.language')
env = test_helper.setup()
message = test_helper.make_message()
ctx = test_helper.make_ctx(env)
end)
after_each(function()
test_helper.teardown(env)
end)
describe('name', function()
it('should be "language"', function()
assert.are.equal('language', language_mw.name)
end)
end)
describe('default language', function()
it('should default to en_gb', function()
local new_ctx = language_mw.run(ctx, message)
assert.are.equal('en_gb', new_ctx.lang_code)
end)
it('should set lang table in context', function()
local new_ctx = language_mw.run(ctx, message)
assert.is_not_nil(new_ctx.lang)
end)
end)
describe('user language', function()
it('should use user language setting when set', function()
env.redis.setex('cache:setting:' .. message.from.id .. ':language', 300, 'de_de')
local new_ctx = language_mw.run(ctx, message)
assert.are.equal('de_de', new_ctx.lang_code)
assert.are.same(mock_de_de, new_ctx.lang)
end)
it('should fall back to Telegram language code when no setting', function()
message.from.language_code = 'de_de'
local new_ctx = language_mw.run(ctx, message)
assert.are.equal('de_de', new_ctx.lang_code)
end)
it('should ignore unsupported Telegram language code', function()
message.from.language_code = 'zz_zz'
local new_ctx = language_mw.run(ctx, message)
assert.are.equal('en_gb', new_ctx.lang_code)
end)
it('should prefer user setting over Telegram language', function()
message.from.language_code = 'de_de'
env.redis.setex('cache:setting:' .. message.from.id .. ':language', 300, 'pt_br')
local new_ctx = language_mw.run(ctx, message)
assert.are.equal('pt_br', new_ctx.lang_code)
end)
end)
describe('group language override', function()
it('should use group language when force is set', function()
ctx.is_group = true
env.redis.setex('cache:setting:' .. message.chat.id .. ':force group language', 300, 'true')
env.redis.setex('cache:setting:' .. message.chat.id .. ':group language', 300, 'de_de')
local new_ctx = language_mw.run(ctx, message)
assert.are.equal('de_de', new_ctx.lang_code)
end)
it('should not override in private chats', function()
ctx.is_group = false
env.redis.setex('cache:setting:' .. message.from.id .. ':language', 300, 'pt_br')
local new_ctx = language_mw.run(ctx, message)
assert.are.equal('pt_br', new_ctx.lang_code)
end)
it('should not override when force is not set', function()
ctx.is_group = true
env.redis.setex('cache:setting:' .. message.from.id .. ':language', 300, 'pt_br')
env.redis.setex('cache:setting:' .. message.chat.id .. ':group language', 300, 'de_de')
-- No 'force group language' key
local new_ctx = language_mw.run(ctx, message)
assert.are.equal('pt_br', new_ctx.lang_code)
end)
it('should fall back to en_gb when forced but no group lang set', function()
ctx.is_group = true
env.redis.setex('cache:setting:' .. message.chat.id .. ':force group language', 300, 'true')
-- No 'group language' set
local new_ctx = language_mw.run(ctx, message)
assert.are.equal('en_gb', new_ctx.lang_code)
end)
end)
describe('when message has no from', function()
it('should still set a default language', function()
message.from = nil
local new_ctx = language_mw.run(ctx, message)
assert.are.equal('en_gb', new_ctx.lang_code)
assert.is_not_nil(new_ctx.lang)
end)
end)
describe('always continues', function()
it('should always return true', function()
local _, should_continue = language_mw.run(ctx, message)
assert.is_true(should_continue)
end)
end)
end)

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