passing a nil should always raise an ArgumentError

1 files changed, 25 insertions, 0 deletions

diff --git a/actionview/test/activerecord/polymorphic_routes_test.rb b/actionview/test/activerecord/polymorphic_routes_test.rb
index afb714484b..c1f5a75cd4 100644
--- a/actionview/test/activerecord/polymorphic_routes_test.rb
+++ b/actionview/test/activerecord/polymorphic_routes_test.rb
@@ -112,6 +112,31 @@ class PolymorphicRoutesTest < ActionController::TestCase
     end
   end
 
+  def test_with_empty_list
+    with_test_routes do
+      assert_raise ArgumentError, "Nil location provided. Can't build URI." do
+        polymorphic_url([])
+      end
+    end
+  end
+
+  def test_with_nil_id
+    with_test_routes do
+      assert_raise ArgumentError, "Nil location provided. Can't build URI." do
+        polymorphic_url({ :id => nil })
+      end
+    end
+  end
+
+  def test_with_nil_in_list
+    with_test_routes do
+      assert_raise ArgumentError, "Nil location provided. Can't build URI." do
+        @series.save
+        polymorphic_url([nil, @series])
+      end
+    end
+  end
+
   def test_with_record
     with_test_routes do
       @project.save