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rails--rails/actionmailer/test/caching_test.rb

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# frozen_string_literal: true
require "fileutils"
require "abstract_unit"
require "mailers/base_mailer"
require "mailers/caching_mailer"
CACHE_DIR = "test_cache"
# Don't change '/../temp/' cavalierly or you might hose something you don't want hosed
FILE_STORE_PATH = File.join(__dir__, "/../temp/", CACHE_DIR)
class FragmentCachingMailer < ActionMailer::Base
abstract!
def some_action; end
end
class BaseCachingTest < ActiveSupport::TestCase
def setup
super
@store = ActiveSupport::Cache::MemoryStore.new
@mailer = FragmentCachingMailer.new
@mailer.perform_caching = true
@mailer.cache_store = @store
end
end
class FragmentCachingTest < BaseCachingTest
def test_read_fragment_with_caching_enabled
@store.write("views/name", "value")
assert_equal "value", @mailer.read_fragment("name")
end
def test_read_fragment_with_caching_disabled
@mailer.perform_caching = false
@store.write("views/name", "value")
assert_nil @mailer.read_fragment("name")
end
def test_fragment_exist_with_caching_enabled
@store.write("views/name", "value")
assert @mailer.fragment_exist?("name")
assert_not @mailer.fragment_exist?("other_name")
end
def test_fragment_exist_with_caching_disabled
@mailer.perform_caching = false
@store.write("views/name", "value")
assert_not @mailer.fragment_exist?("name")
assert_not @mailer.fragment_exist?("other_name")
end
def test_write_fragment_with_caching_enabled
assert_nil @store.read("views/name")
assert_equal "value", @mailer.write_fragment("name", "value")
assert_equal "value", @store.read("views/name")
end
def test_write_fragment_with_caching_disabled
assert_nil @store.read("views/name")
@mailer.perform_caching = false
assert_equal "value", @mailer.write_fragment("name", "value")
assert_nil @store.read("views/name")
end
def test_expire_fragment_with_simple_key
@store.write("views/name", "value")
@mailer.expire_fragment "name"
assert_nil @store.read("views/name")
end
def test_expire_fragment_with_regexp
@store.write("views/name", "value")
@store.write("views/another_name", "another_value")
@store.write("views/primalgrasp", "will not expire ;-)")
@mailer.expire_fragment(/name/)
assert_nil @store.read("views/name")
assert_nil @store.read("views/another_name")
assert_equal "will not expire ;-)", @store.read("views/primalgrasp")
end
def test_fragment_for
@store.write("views/expensive", "fragment content")
fragment_computed = false
view_context = @mailer.view_context
buffer = "generated till now -> ".html_safe
buffer << view_context.send(:fragment_for, "expensive") { fragment_computed = true }
assert_not fragment_computed
assert_equal "generated till now -> fragment content", buffer
end
def test_html_safety
assert_nil @store.read("views/name")
content = "value".html_safe
assert_equal content, @mailer.write_fragment("name", content)
cached = @store.read("views/name")
assert_equal content, cached
assert_equal String, cached.class
html_safe = @mailer.read_fragment("name")
assert_equal content, html_safe
assert_predicate html_safe, :html_safe?
end
end
class FunctionalFragmentCachingTest < BaseCachingTest
def setup
super
@store = ActiveSupport::Cache::MemoryStore.new
@mailer = CachingMailer.new
@mailer.perform_caching = true
@mailer.cache_store = @store
end
def test_fragment_caching
email = @mailer.fragment_cache
expected_body = "\"Welcome\""
assert_match expected_body, email.body.encoded
assert_match expected_body,
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@store.read("views/caching_mailer/fragment_cache:#{template_digest("caching_mailer/fragment_cache", "html")}/caching")
end
def test_fragment_caching_in_partials
email = @mailer.fragment_cache_in_partials
expected_body = "Old fragment caching in a partial"
assert_match(expected_body, email.body.encoded)
assert_match(expected_body,
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@store.read("views/caching_mailer/_partial:#{template_digest("caching_mailer/_partial", "html")}/caching"))
end
def test_skip_fragment_cache_digesting
email = @mailer.skip_fragment_cache_digesting
expected_body = "No Digest"
assert_match expected_body, email.body.encoded
assert_match expected_body, @store.read("views/no_digest")
end
def test_fragment_caching_options
time = Time.now
email = @mailer.fragment_caching_options
expected_body = "No Digest"
assert_match expected_body, email.body.encoded
Time.stub(:now, time + 11) do
assert_nil @store.read("views/no_digest")
end
end
def test_multipart_fragment_caching
email = @mailer.multipart_cache
expected_text_body = "\"Welcome text\""
expected_html_body = "\"Welcome html\""
encoded_body = email.body.encoded
assert_match expected_text_body, encoded_body
assert_match expected_html_body, encoded_body
assert_match expected_text_body,
@store.read("views/text_caching")
assert_match expected_html_body,
@store.read("views/html_caching")
end
def test_fragment_cache_instrumentation
@mailer.enable_fragment_cache_logging = true
payload = nil
subscriber = proc do |*args|
event = ActiveSupport::Notifications::Event.new(*args)
payload = event.payload
end
ActiveSupport::Notifications.subscribed(subscriber, "read_fragment.action_mailer") do
@mailer.fragment_cache
end
assert_equal "caching_mailer", payload[:mailer]
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assert_equal [ :views, "caching_mailer/fragment_cache:#{template_digest("caching_mailer/fragment_cache", "html")}", :caching ], payload[:key]
ensure
@mailer.enable_fragment_cache_logging = true
end
private
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def template_digest(name, format)
ActionView::Digestor.digest(name: name, format: format, finder: @mailer.lookup_context)
end
end
class CacheHelperOutputBufferTest < BaseCachingTest
class MockController
def read_fragment(name, options)
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false
end
def write_fragment(name, fragment, options)
fragment
end
end
def setup
super
end
def test_output_buffer
output_buffer = ActionView::OutputBuffer.new
controller = MockController.new
cache_helper = Class.new do
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def self.controller; end
def self.output_buffer; end
def self.output_buffer=; end
end
cache_helper.extend(ActionView::Helpers::CacheHelper)
cache_helper.stub :controller, controller do
cache_helper.stub :output_buffer, output_buffer do
assert_called_with cache_helper, :output_buffer=, [output_buffer.class.new(output_buffer)] do
assert_nothing_raised do
cache_helper.send :fragment_for, "Test fragment name", "Test fragment", &Proc.new { nil }
end
end
end
end
end
def test_safe_buffer
output_buffer = ActiveSupport::SafeBuffer.new
controller = MockController.new
cache_helper = Class.new do
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def self.controller; end
def self.output_buffer; end
def self.output_buffer=; end
end
cache_helper.extend(ActionView::Helpers::CacheHelper)
cache_helper.stub :controller, controller do
cache_helper.stub :output_buffer, output_buffer do
assert_called_with cache_helper, :output_buffer=, [output_buffer.class.new(output_buffer)] do
assert_nothing_raised do
cache_helper.send :fragment_for, "Test fragment name", "Test fragment", &Proc.new { nil }
end
end
end
end
end
end
class ViewCacheDependencyTest < BaseCachingTest
class NoDependenciesMailer < ActionMailer::Base
end
class HasDependenciesMailer < ActionMailer::Base
view_cache_dependency { "trombone" }
view_cache_dependency { "flute" }
end
def test_view_cache_dependencies_are_empty_by_default
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assert_empty NoDependenciesMailer.new.view_cache_dependencies
end
def test_view_cache_dependencies_are_listed_in_declaration_order
assert_equal %w(trombone flute), HasDependenciesMailer.new.view_cache_dependencies
end
end