using punycode name as the authority in the headers, which is actually a bugfix

lib/httpx/extensions.rb

@@ -78,7 +78,7 @@ module HTTPX
 
       def authority
         port_string = port == default_port ? nil : ":#{port}"
-        "#{@non_ascii_hostname || host}#{port_string}"
+        "#{host}#{port_string}"
       end
 
       def origin

test/support/assertion_helpers.rb

@@ -17,12 +17,12 @@ module ResponseHelpers
         if value.respond_to?(:start_with?)
           assert value.start_with?(expect), "#{meth} assertion failed: \#{key}=\#{value} (expected: \#{expect}})"
         else
-          assert value == expect, "#{meth} assertion failed: \#{key}=\#{value.to_s} (expected: \#{expect.to_s})"
+          assert value == expect, "#{meth} assertion failed: \#{key}=\#{value.inspect} (expected: \#{expect.to_s})"
         end
       end
 
       def verify_no_#{meth}(#{meth}s, key)
-        assert !#{meth}s.key?(key), "#{meth}s contains the given key (" + key + ": \#{#{meth}s[key]})"
+        assert !#{meth}s.key?(key), "#{meth}s contains the given key (" + key + ": \#{#{meth}s[key].inspect})"
       end
     DEFINE
   end

test/support/requests/get.rb

@@ -96,8 +96,12 @@ module Requests
 
     def test_get_idn
       response = HTTPX.get("http://bücher.ch")
-      verify_status(response, 200)
+      verify_status(response, 301)
+      verify_header(response.headers, "location", "https://www.buecher.de")
+
       response.close
+
+      assert response.instance_variable_get(:@request).authority == "xn--bcher-kva.ch"
     end unless RUBY_VERSION < "2.3"
 
     def test_get_non_ascii