1 files changed, 76 insertions, 0 deletions
diff --git a/activerecord/test/cases/finder_respond_to_test.rb b/activerecord/test/cases/finder_respond_to_test.rb
new file mode 100644
index 0000000000..4e6fecf11a
--- /dev/null
+++ b/activerecord/test/cases/finder_respond_to_test.rb
@@ -0,0 +1,76 @@
+require "cases/helper"
+require 'models/topic'
+
+class FinderRespondToTest < ActiveRecord::TestCase
+
+  fixtures :topics
+
+  def test_should_preserve_normal_respond_to_behaviour_and_respond_to_newly_added_method
+    class << Topic; self; end.send(:define_method, :method_added_for_finder_respond_to_test) { }
+    assert Topic.respond_to?(:method_added_for_finder_respond_to_test)
+  ensure
+    class << Topic; self; end.send(:remove_method, :method_added_for_finder_respond_to_test)
+  end
+
+  def test_should_preserve_normal_respond_to_behaviour_and_respond_to_standard_object_method
+    assert Topic.respond_to?(:to_s)
+  end
+
+  def test_should_respond_to_find_by_one_attribute_before_caching
+    ensure_topic_method_is_not_cached(:find_by_title)
+    assert Topic.respond_to?(:find_by_title)
+  end
+
+  def test_should_respond_to_find_all_by_one_attribute
+    ensure_topic_method_is_not_cached(:find_all_by_title)
+    assert Topic.respond_to?(:find_all_by_title)
+  end
+
+  def test_should_respond_to_find_all_by_two_attributes
+    ensure_topic_method_is_not_cached(:find_all_by_title_and_author_name)
+    assert Topic.respond_to?(:find_all_by_title_and_author_name)
+  end
+
+  def test_should_respond_to_find_by_two_attributes
+    ensure_topic_method_is_not_cached(:find_by_title_and_author_name)
+    assert Topic.respond_to?(:find_by_title_and_author_name)
+  end
+
+  def test_should_respond_to_find_or_initialize_from_one_attribute
+    ensure_topic_method_is_not_cached(:find_or_initialize_by_title)
+    assert Topic.respond_to?(:find_or_initialize_by_title)
+  end
+
+  def test_should_respond_to_find_or_initialize_from_two_attributes
+    ensure_topic_method_is_not_cached(:find_or_initialize_by_title_and_author_name)
+    assert Topic.respond_to?(:find_or_initialize_by_title_and_author_name)
+  end
+
+  def test_should_respond_to_find_or_create_from_one_attribute
+    ensure_topic_method_is_not_cached(:find_or_create_by_title)
+    assert Topic.respond_to?(:find_or_create_by_title)
+  end
+
+  def test_should_respond_to_find_or_create_from_two_attributes
+    ensure_topic_method_is_not_cached(:find_or_create_by_title_and_author_name)
+    assert Topic.respond_to?(:find_or_create_by_title_and_author_name)
+  end
+
+  def test_should_not_respond_to_find_by_one_missing_attribute
+    assert !Topic.respond_to?(:find_by_undertitle)
+  end
+
+  def test_should_not_respond_to_find_by_invalid_method_syntax
+    assert !Topic.respond_to?(:fail_to_find_by_title)
+    assert !Topic.respond_to?(:find_by_title?)
+    assert !Topic.respond_to?(:fail_to_find_or_create_by_title)
+    assert !Topic.respond_to?(:find_or_create_by_title?)
+  end
+
+  private
+
+  def ensure_topic_method_is_not_cached(method_id)
+    class << Topic; self; end.send(:remove_method, method_id) if Topic.public_methods.any? { |m| m.to_s == method_id.to_s }
+  end
+
+end
+\ No newline at end of file