Add failing test for compression bug

On Rails 5.2, when compression is enabled (which it is by default),
the actual value being written to the underlying storage is actually
_bigger_ than the uncompressed raw value.

This is because the `@marshaled_value` instance variable (typically)
gets serialized with the entry object, which is then written to the
underlying storage, essentially double-storing every value (once
uncompressed, once possibly compressed).

This regression was introduced in #32254.

1 files changed, 0 insertions, 21 deletions

diff --git a/activesupport/test/cache/cache_entry_test.rb b/activesupport/test/cache/cache_entry_test.rb
index 80ff7ad564..d7baaa5c72 100644
--- a/activesupport/test/cache/cache_entry_test.rb
+++ b/activesupport/test/cache/cache_entry_test.rb
@@ -13,25 +13,4 @@ class CacheEntryTest < ActiveSupport::TestCase
       assert entry.expired?, "entry is expired"
     end
   end
-
-  def test_compressed_values
-    value = "value" * 100
-    entry = ActiveSupport::Cache::Entry.new(value, compress: true, compress_threshold: 1)
-    assert_equal value, entry.value
-    assert(value.bytesize > entry.size, "value is compressed")
-  end
-
-  def test_compressed_by_default
-    value = "value" * 100
-    entry = ActiveSupport::Cache::Entry.new(value, compress_threshold: 1)
-    assert_equal value, entry.value
-    assert(value.bytesize > entry.size, "value is compressed")
-  end
-
-  def test_uncompressed_values
-    value = "value" * 100
-    entry = ActiveSupport::Cache::Entry.new(value, compress: false)
-    assert_equal value, entry.value
-    assert_equal value.bytesize, entry.size
-  end
 end