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require 'test_helper'
require 'openssl'
begin
require 'active_support'
rescue LoadError
$stderr.puts "Skipping cache tests using ActiveSupport"
else
class I18nBackendCacheTest < I18n::TestCase
class Backend < I18n::Backend::Simple
include I18n::Backend::Cache
end
def setup
I18n.backend = Backend.new
super
I18n.cache_store = ActiveSupport::Cache.lookup_store(:memory_store)
I18n.cache_store.clear
I18n.cache_key_digest = nil
end
def teardown
super
I18n.cache_store.clear
I18n.cache_store = nil
end
test "it uses the cache" do
assert I18n.cache_store.is_a?(ActiveSupport::Cache::MemoryStore)
end
test "translate hits the backend and caches the response" do
I18n.backend.expects(:lookup).returns('Foo')
assert_equal 'Foo', I18n.t(:foo)
I18n.backend.expects(:lookup).never
assert_equal 'Foo', I18n.t(:foo)
I18n.backend.expects(:lookup).returns('Bar')
assert_equal 'Bar', I18n.t(:bar)
end
test "translate returns a cached false response" do
I18n.backend.expects(:lookup).never
I18n.cache_store.expects(:read).returns(false)
assert_equal false, I18n.t(:foo)
end
test "still raises MissingTranslationData but also caches it" do
assert_raises(I18n::MissingTranslationData) { I18n.t(:missing, :raise => true) }
assert_raises(I18n::MissingTranslationData) { I18n.t(:missing, :raise => true) }
assert_equal 1, I18n.cache_store.instance_variable_get(:@data).size
# I18n.backend.expects(:lookup).returns(nil)
# assert_raises(I18n::MissingTranslationData) { I18n.t(:missing, :raise => true) }
# I18n.backend.expects(:lookup).never
# assert_raises(I18n::MissingTranslationData) { I18n.t(:missing, :raise => true) }
end
test "MissingTranslationData does not cache custom options" do
I18n.t(:missing, :scope => :foo, :extra => true)
assert_equal 1, I18n.cache_store.instance_variable_get(:@data).size
value = I18n.cache_store.read(I18n.cache_store.instance_variable_get(:@data).keys.first)
assert_equal({ scope: :foo }, value.options)
end
test "uses 'i18n' as a cache key namespace by default" do
assert_equal 0, I18n.backend.send(:cache_key, :en, :foo, {}).index('i18n')
end
test "adds a custom cache key namespace" do
with_cache_namespace('bar') do
assert_equal 0, I18n.backend.send(:cache_key, :en, :foo, {}).index('i18n/bar/')
end
end
test "adds locale and hash of key and hash of options" do
options = { :bar => 1 }
assert_equal "i18n//en/#{:foo.to_s.hash}/#{options.to_s.hash}", I18n.backend.send(:cache_key, :en, :foo, options)
end
test "cache_key uses configured digest method" do
digest = OpenSSL::Digest::SHA256.new
options = { :bar => 1 }
options_hash = options.inspect
with_cache_key_digest(digest) do
assert_equal "i18n//en/#{digest.hexdigest(:foo.to_s)}/#{digest.hexdigest(options_hash)}", I18n.backend.send(:cache_key, :en, :foo, options)
end
end
test "keys should not be equal" do
interpolation_values1 = { :foo => 1, :bar => 2 }
interpolation_values2 = { :foo => 2, :bar => 1 }
key1 = I18n.backend.send(:cache_key, :en, :some_key, interpolation_values1)
key2 = I18n.backend.send(:cache_key, :en, :some_key, interpolation_values2)
assert key1 != key2
end
protected
def with_cache_namespace(namespace)
I18n.cache_namespace = namespace
yield
I18n.cache_namespace = nil
end
def with_cache_key_digest(digest)
I18n.cache_key_digest = digest
yield
I18n.cache_key_digest = nil
end
end
end # AS cache check
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