1 files changed, 12 insertions, 0 deletions
diff --git a/activerecord/test/cases/associations/belongs_to_associations_test.rb b/activerecord/test/cases/associations/belongs_to_associations_test.rb
index b8ec9117af..75f236aca0 100644
--- a/activerecord/test/cases/associations/belongs_to_associations_test.rb
+++ b/activerecord/test/cases/associations/belongs_to_associations_test.rb
@@ -377,4 +377,16 @@ class BelongsToAssociationsTest < ActiveRecord::TestCase
     assert companies(:first_client).readonly_firm.readonly?
   end
 
+  def test_save_fails_for_invalid_belongs_to
+    log = AuditLog.new
+    assert log.valid?
+
+    log.build_developer # Build invalid association
+    assert !log.developer.valid?
+    assert !log.valid?
+    assert_equal "is invalid", log.errors.on("developer")
+    
+    assert !log.save
+  end
+
 end