assert_template matches against Regexp

This allows for more strict template assertions,
while maintaining backward compatibility.

For example, if you use assert_template("foo/bar")
and "foo/bar/baz" was rendered, the test passes.

But if you use assert_template(%r{\Afoo/bar\Z}),
you will catch that a different template was
rendered.

Also, if you passed an unsupported argument to
assert_template() in the past, it would silently
succeed. Now it raises an ArgumentError.

1 files changed, 6 insertions, 0 deletions

diff --git a/actionpack/test/template/test_case_test.rb b/actionpack/test/template/test_case_test.rb
index 37858c1ba2..f2ed2ec609 100644
--- a/actionpack/test/template/test_case_test.rb
+++ b/actionpack/test/template/test_case_test.rb
@@ -277,6 +277,12 @@ module ActionView
   end
 
   class RenderTemplateTest < ActionView::TestCase
+    test "supports specifying templates with a Regexp" do
+      controller.controller_path = "fun"
+      render(:template => "fun/games/hello_world")
+      assert_template %r{\Afun/games/hello_world\Z}
+    end
+
     test "supports specifying partials" do
       controller.controller_path = "test"
       render(:template => "test/calling_partial_with_layout")