1 files changed, 52 insertions, 0 deletions
diff --git a/testing/web-platform/tests/XMLHttpRequest/responsetext-decoding.htm b/testing/web-platform/tests/XMLHttpRequest/responsetext-decoding.htm
new file mode 100644
index 000000000..7f179e6f3
--- /dev/null
+++ b/testing/web-platform/tests/XMLHttpRequest/responsetext-decoding.htm
@@ -0,0 +1,52 @@
+<!doctype html>
+<html>
+  <head>
+    <title>XMLHttpRequest: responseText decoding</title>
+    <script src="/resources/testharness.js"></script>
+    <script src="/resources/testharnessreport.js"></script>
+    <link rel="help" href="https://xhr.spec.whatwg.org/#the-responsetext-attribute" data-tested-assertations="following::ol[1]/li[4]" />
+    <link rel="help" href="https://xhr.spec.whatwg.org/#text-response-entity-body" data-tested-assertations="following::ol[1]/li[2] following::ol[1]/li[3] following::ol[1]/li[4] following::ol[1]/li[5]" />
+  </head>
+  <body>
+    <div id="log"></div>
+    <script>
+      function request(type, input, output, responseType) {
+        var test = async_test(document.title + " (" + type + " " + input + ")");
+        test.step(function() {
+          var client = new XMLHttpRequest()
+          if (responseType !== undefined) {
+            client.responseType = responseType
+          }
+          client.open("GET", "resources/status.py?content=" + input + "&type=" + encodeURIComponent(type), true)
+          client.onload = function(){
+            test.step(function(){
+              assert_equals(client.responseText, output)
+              test.done()
+            })
+          }
+          client.send(null)
+        })
+      }
+      request("application/xml", encodeURIComponent("<?xml version='1.0' encoding='windows-1252'?><x>")+'%FF'+encodeURIComponent("<\/x>"), "<?xml version='1.0' encoding='windows-1252'?><x>\u00FF<\/x>")
+      request("text/html", encodeURIComponent("<!doctype html><meta charset=windows-1252>")+"%FF", "<!doctype html><meta charset=windows-1252>\u00FF")
+      request("text/plain;charset=windows-1252", "%FF", "\u00FF")
+      request("text/plain", "%FF", "\uFFFD")
+      request("text/plain", "%FE%FF", "")
+      request("text/plain", "%FE%FF%FE%FF", "\uFEFF")
+      request("text/plain", "%EF%BB%BF", "")
+      request("text/plain", "%EF%BB%BF%EF%BB%BF", "\uFEFF")
+      request("text/plain", "%C2", "\uFFFD")
+
+      // XXX might need fixing
+      request("text/xml", "%FE%FF", "")
+      request("text/xml", "%FE%FF%FE%FF", "\uFEFF")
+      request("text/xml", "%EF%BB%BF", "")
+      request("text/xml", "%EF%BB%BF%EF%BB%BF", "\uFEFF")
+      request("text/plain", "%E3%81%B2", "\u3072", 'text')
+      // the point of the following test: setting responseType=text should (per spec #text-response-entity-body point 3)
+      // skip some of the charset detection even for XML resources. The test uses a wilfully mislabelled XMLish response
+      // and the pass condition is that the responseType = text makes the decoder fall back to UTF-8
+      request("text/xml", encodeURIComponent("<?xml version='1.0' encoding='windows-1252'?><x>")+"%E3%81%B2"+encodeURIComponent("<\/x>"), "<?xml version='1.0' encoding='windows-1252'?><x>\u3072<\/x>", 'text')
+    </script>
+  </body>
+</html>