diff --git a/activerecord/test/cases/migration_test.rb b/activerecord/test/cases/migration_test.rb
index da7875187a5dfff0ac17c5d14c5cd1bbee1f9b4f..57f94950f9c3e969d1d3034ace8278ec21566a78 100644
--- a/activerecord/test/cases/migration_test.rb
+++ b/activerecord/test/cases/migration_test.rb
@@ -402,33 +402,6 @@ def test_internal_metadata_stores_environment
     ActiveRecord::Migrator.up(migrations_path)
   end
 
-  def test_migration_sets_internal_metadata_even_when_fully_migrated
-    current_env     = ActiveRecord::ConnectionHandling::DEFAULT_ENV.call
-    migrations_path = MIGRATIONS_ROOT + "/valid"
-    old_path        = ActiveRecord::Migrator.migrations_paths
-    ActiveRecord::Migrator.migrations_paths = migrations_path
-
-    ActiveRecord::Migrator.up(migrations_path)
-    assert_equal current_env, ActiveRecord::InternalMetadata[:environment]
-
-    original_rails_env  = ENV["RAILS_ENV"]
-    original_rack_env   = ENV["RACK_ENV"]
-    ENV["RAILS_ENV"]    = ENV["RACK_ENV"] = "foofoo"
-    new_env = ActiveRecord::ConnectionHandling::DEFAULT_ENV.call
-
-    refute_equal current_env, new_env
-
-    sleep 1 # mysql by default does not store fractional seconds in the database
-
-    ActiveRecord::Migrator.up(migrations_path)
-    assert_equal new_env, ActiveRecord::InternalMetadata[:environment]
-  ensure
-    ActiveRecord::Migrator.migrations_paths = old_path
-    ENV["RAILS_ENV"] = original_rails_env
-    ENV["RACK_ENV"]  = original_rack_env
-    ActiveRecord::Migrator.up(migrations_path)
-  end
-
   def test_internal_metadata_stores_environment_when_other_data_exists
     ActiveRecord::InternalMetadata.delete_all
     ActiveRecord::InternalMetadata[:foo] = "bar"