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+<!DOCTYPE html>
+<script>
+  var isAndroid = navigator.userAgent.includes("Android");
+  var isB2G = !isAndroid && /Mobile|Tablet/.test(navigator.userAgent);
+
+  function ok(v, msg) {
+    window.parent.postMessage({status: "ok", result: !!v, message: msg}, "*");
+  }
+
+  function is(a, b, msg) {
+    ok(a === b, msg + ", expected '" + b + "', got '" + a + "'");
+  }
+
+  function todo(v, msg) {
+    window.parent.postMessage({status: "todo", result: !!v, message: msg}, "*");
+  }
+
+  function finish() {
+    window.parent.postMessage({status: "done"}, "*");
+  }
+
+  function testFetch() {
+    return fetch("fetch.txt").then(function(r) {
+      return r.text();
+    }).then(function(body) {
+      is(body, "so fetch", "A fetch() Request should have the 'fetch' context");
+    });
+  }
+
+  function testImage() {
+    return new Promise(function(resolve, reject) {
+      var img = document.createElement("img");
+      img.src = "img.jpg";
+      // The service worker will respond with an existing image only if the
+      // Request has the correct context, otherwise the Promise will get
+      // rejected and the test will fail.
+      img.onload = resolve;
+      img.onerror = reject;
+    });
+  }
+
+  function testImageSrcSet() {
+    return new Promise(function(resolve, reject) {
+      var img = document.createElement("img");
+      img.srcset = "responsive.jpg 100w";
+      // The service worker will respond with an existing image only if the
+      // Request has the correct context, otherwise the Promise will get
+      // rejected and the test will fail.
+      img.onload = resolve;
+      img.onerror = reject;
+    });
+  }
+
+  function testPicture() {
+    return new Promise(function(resolve, reject) {
+      var pic = document.createElement("picture");
+      var img = document.createElement("img");
+      pic.appendChild(img);
+      img.src = "responsive.jpg?picture";
+      // The service worker will respond with an existing image only if the
+      // Request has the correct context, otherwise the Promise will get
+      // rejected and the test will fail.
+      img.onload = resolve;
+      img.onerror = reject;
+    });
+  }
+
+  function testAudio() {
+    return new Promise(function(resolve, reject) {
+      var audio = document.createElement("audio");
+      audio.src = "audio.ogg";
+      audio.preload = "metadata";
+      // The service worker will respond with an existing audio only if the
+      // Request has the correct context, otherwise the Promise will get
+      // rejected and the test will fail.
+      audio.onloadedmetadata = resolve;
+      audio.onerror = reject;
+    });
+  }
+
+  function testVideo() {
+    return new Promise(function(resolve, reject) {
+      var video = document.createElement("video");
+      video.src = "video.ogg";
+      video.preload = "metadata";
+      // The service worker will respond with an existing video only if the
+      // Request has the correct context, otherwise the Promise will get
+      // rejected and the test will fail.
+      video.onloadedmetadata = resolve;
+      video.onerror = reject;
+    });
+  }
+
+  function testBeacon() {
+    ok(navigator.sendBeacon("beacon.sjs"), "Sending the beacon should succeed");
+    // query the context from beacon.sjs
+    return fetch("beacon.sjs?queryContext")
+      .then(function(r) {
+        return r.text();
+      }).then(function(body) {
+        is(body, "beacon", "The context for the intercepted beacon should be correct");
+      });
+  }
+
+  function testCSPReport() {
+    return new Promise(function(resolve, reject) {
+      var iframe = document.createElement("iframe");
+      iframe.src = "csp-violate.sjs";
+      document.documentElement.appendChild(iframe);
+      navigator.serviceWorker.addEventListener("message", function onMessage(e) {
+        if (e.data.data == "csp-report") {
+          is(e.data.context, "cspreport", "Expected the cspreport context on a CSP violation report");
+          navigator.serviceWorker.removeEventListener("message", onMessage);
+          resolve();
+        }
+      }, false);
+    });
+  }
+
+  function testEmbed() {
+    return Promise.resolve().then(function() {
+      todo(false, "<embed> tag is not currently intercepted. See Bug 1168676.");
+    });
+
+    return new Promise(function(resolve, reject) {
+      var embed = document.createElement("embed");
+      embed.src = "embed";
+      document.documentElement.appendChild(embed);
+      navigator.serviceWorker.addEventListener("message", function onMessage(e) {
+        if (e.data.data == "embed") {
+          is(e.data.context, "embed", "Expected the object context on an embed");
+          navigator.serviceWorker.removeEventListener("message", onMessage);
+          resolve();
+        }
+      }, false);
+    });
+  }
+
+  function testObject() {
+    return Promise.resolve().then(function() {
+      todo(false, "<object> tag is not currently intercepted. See Bug 1168676");
+    });
+
+    return new Promise(function(resolve, reject) {
+      var object = document.createElement("object");
+      object.data = "object";
+      document.documentElement.appendChild(object);
+      navigator.serviceWorker.addEventListener("message", function onMessage(e) {
+        if (e.data.data == "object") {
+          is(e.data.context, "object", "Expected the object context on an object");
+          navigator.serviceWorker.removeEventListener("message", onMessage);
+          resolve();
+        }
+      }, false);
+    });
+  }
+
+  function testFont() {
+    return new Promise(function(resolve, reject) {
+      var css = '@font-face { font-family: "sw-font"; src: url("font"); }';
+      css += '* { font-family: "sw-font"; }';
+      var style = document.createElement("style");
+      style.appendChild(document.createTextNode(css));
+      document.documentElement.appendChild(style);
+      navigator.serviceWorker.addEventListener("message", function onMessage(e) {
+        if (e.data.data == "font") {
+          is(e.data.context, "font", "Expected the font context on an font");
+          navigator.serviceWorker.removeEventListener("message", onMessage);
+          resolve();
+        }
+      }, false);
+    });
+  }
+
+  function testIFrame() {
+    return new Promise(function(resolve, reject) {
+      var iframe = document.createElement("iframe");
+      iframe.src = "iframe";
+      document.documentElement.appendChild(iframe);
+      // The service worker will respond with an existing document only if the
+      // Request has the correct context, otherwise the Promise will get
+      // rejected and the test will fail.
+      iframe.onload = resolve;
+      iframe.onerror = reject;
+    });
+  }
+
+  function testFrame() {
+    return new Promise(function(resolve, reject) {
+      var frame = document.createElement("frame");
+      frame.src = "frame";
+      document.documentElement.appendChild(frame);
+      // The service worker will respond with an existing document only if the
+      // Request has the correct context, otherwise the Promise will get
+      // rejected and the test will fail.
+      frame.onload = resolve;
+      frame.onerror = reject;
+    });
+  }
+
+  function testInternal() {
+    if (isB2G) {
+      // We can't open new windows on b2g, so skip this part of the test there.
+      return Promise.resolve();
+    }
+    return new Promise(function(resolve, reject) {
+      // Test this with a new window opened through script.  There are of course
+      // other possible ways of testing this too.
+      var win = window.open("newwindow", "_blank", "width=100,height=100");
+      navigator.serviceWorker.addEventListener("message", function onMessage(e) {
+        if (e.data.data == "newwindow") {
+          is(e.data.context, "internal", "Expected the internal context on a newly opened window");
+          navigator.serviceWorker.removeEventListener("message", onMessage);
+          win.close();
+          resolve();
+        }
+      }, false);
+    });
+  }
+
+  function testPing() {
+    return new Promise(function(resolve, reject) {
+      var iframe = document.createElement("iframe");
+      iframe.src = "ping.html";
+      document.documentElement.appendChild(iframe);
+      navigator.serviceWorker.addEventListener("message", function onMessage(e) {
+        if (e.data.data == "ping") {
+          is(e.data.context, "ping", "Expected the ping context on an anchor ping");
+          navigator.serviceWorker.removeEventListener("message", onMessage);
+          resolve();
+        }
+      }, false);
+    });
+  }
+
+  function testPlugin() {
+    return Promise.resolve().then(function() {
+      todo(false, "plugins are not currently intercepted. See Bug 1168676.");
+    });
+
+    var isMobile = /Mobile|Tablet/.test(navigator.userAgent);
+    if (isMobile || parent.isMulet()) {
+      // We can't use plugins on mobile, so skip this part of the test there.
+      return Promise.resolve();
+    }
+
+    return new Promise(function(resolve, reject) {
+      var embed = document.createElement("embed");
+      embed.type = "application/x-test";
+      embed.setAttribute("posturl", "plugin");
+      embed.setAttribute("postmode", "stream");
+      embed.setAttribute("streammode", "normal");
+      embed.setAttribute("src", "fetch.txt");
+      document.documentElement.appendChild(embed);
+      navigator.serviceWorker.addEventListener("message", function onMessage(e) {
+        if (e.data.data == "plugin") {
+          is(e.data.context, "plugin", "Expected the plugin context on a request coming from a plugin");
+          navigator.serviceWorker.removeEventListener("message", onMessage);
+          // Without this, the test leaks in e10s!
+          embed.parentNode.removeChild(embed);
+          resolve();
+        }
+      }, false);
+    });
+  }
+
+  function testScript() {
+    return new Promise(function(resolve, reject) {
+      var script = document.createElement("script");
+      script.src = "script.js";
+      document.documentElement.appendChild(script);
+      // The service worker will respond with an existing script only if the
+      // Request has the correct context, otherwise the Promise will get
+      // rejected and the test will fail.
+      script.onload = resolve;
+      script.onerror = reject;
+    });
+  }
+
+  function testStyle() {
+    return new Promise(function(resolve, reject) {
+      var link = document.createElement("link");
+      link.rel = "stylesheet";
+      link.href = "style.css";
+      document.documentElement.appendChild(link);
+      navigator.serviceWorker.addEventListener("message", function onMessage(e) {
+        if (e.data.data == "style") {
+          is(e.data.context, "style", "Expected the style context on a request coming from a stylesheet");
+          navigator.serviceWorker.removeEventListener("message", onMessage);
+          resolve();
+        }
+      }, false);
+    });
+  }
+
+  function testTrack() {
+    return new Promise(function(resolve, reject) {
+      var video = document.createElement("video");
+      var track = document.createElement("track");
+      track.src = "track";
+      video.appendChild(track);
+      document.documentElement.appendChild(video);
+      navigator.serviceWorker.addEventListener("message", function onMessage(e) {
+        if (e.data.data == "track") {
+          is(e.data.context, "track", "Expected the track context on a request coming from a track");
+          navigator.serviceWorker.removeEventListener("message", onMessage);
+          resolve();
+        }
+      }, false);
+    });
+  }
+
+  function testXHR() {
+    return new Promise(function(resolve, reject) {
+      var xhr = new XMLHttpRequest();
+      xhr.open("get", "xhr", true);
+      xhr.send();
+      // The service worker will respond with an existing resource only if the
+      // Request has the correct context, otherwise the Promise will get
+      // rejected and the test will fail.
+      xhr.onload = resolve;
+      xhr.onerror = reject;
+    });
+  }
+
+  function testXSLT() {
+    return new Promise(function(resolve, reject) {
+      var iframe = document.createElement("iframe");
+      iframe.src = "xml.xml";
+      document.documentElement.appendChild(iframe);
+      navigator.serviceWorker.addEventListener("message", function onMessage(e) {
+        if (e.data.data == "xslt") {
+          is(e.data.context, "xslt", "Expected the xslt context on an XSLT stylesheet");
+          navigator.serviceWorker.removeEventListener("message", onMessage);
+          // Without this, the test leaks in e10s!
+          iframe.parentNode.removeChild(iframe);
+          resolve();
+        }
+      }, false);
+    });
+  }
+
+  function testWorker() {
+    return new Promise(function(resolve, reject) {
+      var worker = new Worker("myworker");
+      worker.onmessage = function(e) {
+        if (e.data == "ack") {
+          worker.terminate();
+          resolve();
+        }
+      };
+      worker.onerror = reject;
+    });
+  }
+
+  function testNestedWorker() {
+    return new Promise(function(resolve, reject) {
+      var worker = new Worker("myparentworker");
+      worker.onmessage = function(e) {
+        if (e.data == "ack") {
+          worker.terminate();
+          resolve();
+        }
+      };
+      worker.onerror = reject;
+    });
+  }
+
+  function testSharedWorker() {
+    return new Promise(function(resolve, reject) {
+      var worker = new SharedWorker("mysharedworker");
+      worker.port.start();
+      worker.port.onmessage = function(e) {
+        if (e.data == "ack") {
+          resolve();
+        }
+      };
+      worker.onerror = reject;
+    });
+  }
+
+  function testNestedWorkerInSharedWorker() {
+    return new Promise(function(resolve, reject) {
+      var worker = new SharedWorker("myparentsharedworker");
+      worker.port.start();
+      worker.port.onmessage = function(e) {
+        if (e.data == "ack") {
+          resolve();
+        }
+      };
+      worker.onerror = reject;
+    });
+  }
+
+  function testCache() {
+    return new Promise(function(resolve, reject) {
+      // Issue an XHR that will be intercepted by the SW in order to start off
+      // the test with a RequestContext value that is not the default ("fetch").
+      // This needs to run inside a fetch event handler because synthesized
+      // RequestContext objects can only have the "fetch" context, and we'd
+      // prefer to test the more general case of some other RequestContext value.
+      var xhr = new XMLHttpRequest();
+      xhr.open("get", "cache", true);
+      xhr.send();
+      navigator.serviceWorker.addEventListener("message", function onMessage(e) {
+        if (e.data.data == "cache") {
+          ok(e.data.success, "The RequestContext can be persisted in the cache.");
+          navigator.serviceWorker.removeEventListener("message", onMessage);
+          resolve();
+        }
+      }, false);
+    });
+  }
+
+  var testName = location.search.substr(1);
+  window[testName]().then(function() {
+    finish();
+  }, function(e) {
+    ok(false, "A promise was rejected: " + e);
+    finish();
+  });
+</script>