2 files changed, 10 insertions, 1 deletions
diff --git a/actionview/test/template/asset_tag_helper_test.rb b/actionview/test/template/asset_tag_helper_test.rb
index 343681b5a9..d789a5ca27 100644
--- a/actionview/test/template/asset_tag_helper_test.rb
+++ b/actionview/test/template/asset_tag_helper_test.rb
@@ -546,6 +546,14 @@ class AssetTagHelperTest < ActionView::TestCase
     assert_equal "http://cdn.example.com/images/file.png", image_path("file.png")
   end
 
+  def test_image_url_with_asset_host_proc_returning_nil
+    @controller.config.asset_host = Proc.new { nil }
+    @controller.request = Struct.new(:base_url, :script_name).new("http://www.example.com", nil)
+
+    assert_equal "/images/rails.png", image_path("rails.png")
+    assert_equal "http://www.example.com/images/rails.png", image_url("rails.png")
+  end
+
   def test_caching_image_path_with_caching_and_proc_asset_host_using_request
     @controller.config.asset_host = Proc.new do |source, request|
       if request.ssl?
diff --git a/actionview/test/template/render_test.rb b/actionview/test/template/render_test.rb
index 67f1aabbd2..a26f20d522 100644
--- a/actionview/test/template/render_test.rb
+++ b/actionview/test/template/render_test.rb
@@ -328,7 +328,8 @@ module RenderTestCases
     exception = assert_raises ActionView::Template::Error do
       @controller_view.render("partial_name_local_variable")
     end
-    assert_match "undefined local variable or method `partial_name_local_variable'", exception.message
+    assert_instance_of NameError, exception.original_exception
+    assert_equal :partial_name_local_variable, exception.original_exception.name
   end
 
   # TODO: The reason for this test is unclear, improve documentation