Instrument read_multi.

Adds `read_multi` instrumentation formatted as:

Caches multi read:
- views/david/2/4184ab71db6849621a4d8820fcd2c0ad
- views/david/2/4184ab71db6849621a4d8820fcd2c0ad
- views/david/3/4184ab71db6849621a4d8820fcd2c0ad
- views/david/3/4184ab71db6849621a4d8820fcd2c0ad

1 files changed, 9 insertions, 0 deletions

diff --git a/activesupport/test/caching_test.rb b/activesupport/test/caching_test.rb
index 98f3ea7a14..095e908907 100644
--- a/activesupport/test/caching_test.rb
+++ b/activesupport/test/caching_test.rb
@@ -1021,6 +1021,15 @@ class CacheStoreLoggerTest < ActiveSupport::TestCase
     @cache.mute { @cache.fetch('foo') { 'bar' } }
     assert @buffer.string.blank?
   end
+
+  def test_multi_read_loggin
+    @cache.write 'hello', 'goodbye'
+    @cache.write 'world', 'earth'
+
+    @cache.read_multi('hello', 'world')
+
+    assert_match "Caches multi read:\n- hello\n- world", @buffer.string.tap { |l| p l }
+  end
 end
 
 class CacheEntryTest < ActiveSupport::TestCase