1 files changed, 21 insertions, 0 deletions
diff --git a/activerecord/test/cases/finder_test.rb b/activerecord/test/cases/finder_test.rb
index 543981b4a0..014588b6d9 100644
--- a/activerecord/test/cases/finder_test.rb
+++ b/activerecord/test/cases/finder_test.rb
@@ -74,6 +74,11 @@ class FinderTest < ActiveRecord::TestCase
     end
   end
 
+  def test_exists_does_not_instantiate_records
+    Developer.expects(:instantiate).never
+    Developer.exists?
+  end
+
   def test_find_by_array_of_one_id
     assert_kind_of(Array, Topic.find([ 1 ]))
     assert_equal(1, Topic.find([ 1 ]).length)
@@ -203,6 +208,14 @@ class FinderTest < ActiveRecord::TestCase
     end
   end
 
+  def test_model_class_responds_to_first_bang
+    assert_equal topics(:first), Topic.order(:id).first!
+    assert_raises ActiveRecord::RecordNotFound do
+      Topic.delete_all
+      Topic.first!
+    end
+  end
+
   def test_last_bang_present
     assert_nothing_raised do
       assert_equal topics(:second), Topic.where("title = 'The Second Topic of the day'").last!
@@ -215,6 +228,14 @@ class FinderTest < ActiveRecord::TestCase
     end
   end
 
+  def test_model_class_responds_to_last_bang
+    assert_equal topics(:fourth), Topic.last!
+    assert_raises ActiveRecord::RecordNotFound do
+      Topic.delete_all
+      Topic.last!
+    end
+  end
+
   def test_unexisting_record_exception_handling
     assert_raise(ActiveRecord::RecordNotFound) {
       Topic.find(1).parent