Ensure NamedScope#any? uses COUNT query wherever possible. [#680 state:resolved]

Signed-off-by: Pratik Naik <pratiknaik@gmail.com>

1 files changed, 22 insertions, 0 deletions

diff --git a/activerecord/test/cases/named_scope_test.rb b/activerecord/test/cases/named_scope_test.rb
index 0c1eb23428..e21ffbbdba 100644
--- a/activerecord/test/cases/named_scope_test.rb
+++ b/activerecord/test/cases/named_scope_test.rb
@@ -184,6 +184,28 @@ class NamedScopeTest < ActiveRecord::TestCase
     end
   end
 
+  def test_any_should_not_load_results
+    topics = Topic.base
+    assert_queries(1) do
+      topics.expects(:empty?).returns(true)
+      assert !topics.any?
+    end
+  end
+
+  def test_any_should_call_proxy_found_if_using_a_block
+    topics = Topic.base
+    assert_queries(1) do
+      topics.expects(:empty?).never
+      topics.any? { true }
+    end
+  end
+
+  def test_any_should_not_fire_query_if_named_scope_loaded
+    topics = Topic.base
+    topics.collect # force load
+    assert_no_queries { assert topics.any? }
+  end
+
   def test_should_build_with_proxy_options
     topic = Topic.approved.build({})
     assert topic.approved