Fix custom join_table name on habtm reflections

When used a custom join_table name on a habtm, rails was not saving it
on Reflections. This causes a problem when rails loads fixtures, because
it uses the reflections to set database with fixtures.

1 files changed, 5 insertions, 0 deletions

diff --git a/activerecord/test/cases/associations/has_and_belongs_to_many_associations_test.rb b/activerecord/test/cases/associations/has_and_belongs_to_many_associations_test.rb
index 366472c6fd..5d33634da2 100644
--- a/activerecord/test/cases/associations/has_and_belongs_to_many_associations_test.rb
+++ b/activerecord/test/cases/associations/has_and_belongs_to_many_associations_test.rb
@@ -21,6 +21,7 @@ require 'models/membership'
 require 'models/sponsor'
 require 'models/country'
 require 'models/treaty'
+require 'models/vertex'
 require 'active_support/core_ext/string/conversions'
 
 class ProjectWithAfterCreateHook < ActiveRecord::Base
@@ -819,4 +820,8 @@ class HasAndBelongsToManyAssociationsTest < ActiveRecord::TestCase
     assert_equal 1, treasure.rich_people.size
     assert_equal person_first_name, rich_person.first_name, 'should not run associated person validation on update when validate: false'
   end
+
+  def test_custom_join_table
+    assert_equal 'edges', Vertex.reflect_on_association(:sources).join_table
+  end
 end