1 files changed, 8 insertions, 2 deletions
diff --git a/activerecord/test/cases/associations/has_many_through_associations_test.rb b/activerecord/test/cases/associations/has_many_through_associations_test.rb
index b075db24e7..c9baef5f7e 100644
--- a/activerecord/test/cases/associations/has_many_through_associations_test.rb
+++ b/activerecord/test/cases/associations/has_many_through_associations_test.rb
@@ -93,7 +93,7 @@ class HasManyThroughAssociationsTest < ActiveRecord::TestCase
   end
 
   def test_destroy_association
-    assert_difference "Person.count", -1 do
+    assert_difference ["Person.count", "Reader.count"], -1 do
       posts(:welcome).people.destroy(people(:michael))
     end
 
@@ -102,7 +102,7 @@ class HasManyThroughAssociationsTest < ActiveRecord::TestCase
   end
 
   def test_destroy_all
-    assert_difference "Person.count", -1 do
+    assert_difference ["Person.count", "Reader.count"], -1 do
       posts(:welcome).people.destroy_all
     end
 
@@ -110,6 +110,12 @@ class HasManyThroughAssociationsTest < ActiveRecord::TestCase
     assert posts(:welcome).people(true).empty?
   end
 
+  def test_should_raise_exception_for_destroying_mismatching_records
+    assert_no_difference ["Person.count", "Reader.count"] do
+      assert_raise(ActiveRecord::AssociationTypeMismatch) { posts(:welcome).people.destroy(posts(:thinking)) }
+    end
+  end
+
   def test_replace_association
     assert_queries(4){posts(:welcome);people(:david);people(:michael); posts(:welcome).people(true)}