Revert "Assert primary key does not exist in habtm when the association is defined, instead of doing that everytime a record is inserted."

Test failures on PostgreSQL.

[#3128 state:open]

This reverts commit da636809daca9c338200811d3590e446f57c8e81.

1 files changed, 14 insertions, 2 deletions

diff --git a/activerecord/test/cases/associations/habtm_join_table_test.rb b/activerecord/test/cases/associations/habtm_join_table_test.rb
index 745f169ad7..bf3e04c3eb 100644
--- a/activerecord/test/cases/associations/habtm_join_table_test.rb
+++ b/activerecord/test/cases/associations/habtm_join_table_test.rb
@@ -36,9 +36,21 @@ class HabtmJoinTableTest < ActiveRecord::TestCase
   uses_transaction :test_should_raise_exception_when_join_table_has_a_primary_key
   def test_should_raise_exception_when_join_table_has_a_primary_key
     if ActiveRecord::Base.connection.supports_primary_key?
-      assert_raise ActiveRecord::HasAndBelongsToManyAssociationWithPrimaryKeyError do
-        MyReader.has_and_belongs_to_many :my_books
+      assert_raise ActiveRecord::ConfigurationError do
+        jaime = MyReader.create(:name=>"Jaime")
+        jaime.my_books << MyBook.create(:name=>'Great Expectations')
       end
     end
   end
+
+  uses_transaction :test_should_cache_result_of_primary_key_check
+  def test_should_cache_result_of_primary_key_check
+    if ActiveRecord::Base.connection.supports_primary_key?
+      ActiveRecord::Base.connection.stubs(:primary_key).with('my_books_my_readers').returns(false).once
+      weaz = MyReader.create(:name=>'Weaz')
+
+      weaz.my_books << MyBook.create(:name=>'Great Expectations')
+      weaz.my_books << MyBook.create(:name=>'Greater Expectations')
+    end
+  end
 end