1 files changed, 131 insertions, 0 deletions
diff --git a/netwerk/test/unit/test_content_sniffer.js b/netwerk/test/unit/test_content_sniffer.js
new file mode 100644
index 000000000..c422e0497
--- /dev/null
+++ b/netwerk/test/unit/test_content_sniffer.js
@@ -0,0 +1,131 @@
+// This file tests nsIContentSniffer, introduced in bug 324985
+
+Cu.import("resource://testing-common/httpd.js");
+Cu.import("resource://gre/modules/NetUtil.jsm");
+
+const unknownType = "application/x-unknown-content-type";
+const sniffedType = "application/x-sniffed";
+
+const snifferCID = Components.ID("{4c93d2db-8a56-48d7-b261-9cf2a8d998eb}");
+const snifferContract = "@mozilla.org/network/unittest/contentsniffer;1";
+const categoryName = "net-content-sniffers";
+
+var sniffing_enabled = true;
+
+/**
+ * This object is both a factory and an nsIContentSniffer implementation (so, it
+ * is de-facto a service)
+ */
+var sniffer = {
+  QueryInterface: function sniffer_qi(iid) {
+    if (iid.equals(Components.interfaces.nsISupports) ||
+        iid.equals(Components.interfaces.nsIFactory) ||
+        iid.equals(Components.interfaces.nsIContentSniffer))
+      return this;
+    throw Components.results.NS_ERROR_NO_INTERFACE;
+  },
+  createInstance: function sniffer_ci(outer, iid) {
+    if (outer)
+      throw Components.results.NS_ERROR_NO_AGGREGATION;
+    return this.QueryInterface(iid);
+  },
+  lockFactory: function sniffer_lockf(lock) {
+    throw Components.results.NS_ERROR_NOT_IMPLEMENTED;
+  },
+
+  getMIMETypeFromContent: function (request, data, length) {
+    return sniffedType;
+  }
+};
+
+var listener = {
+  onStartRequest: function test_onStartR(request, ctx) {
+    try {
+      var chan = request.QueryInterface(Components.interfaces.nsIChannel);
+      if (chan.contentType == unknownType)
+        do_throw("Type should not be unknown!");
+      if (sniffing_enabled && this._iteration > 2 &&
+          chan.contentType != sniffedType) {
+        do_throw("Expecting <" + sniffedType +"> but got <" +
+                 chan.contentType + "> for " + chan.URI.spec);
+      } else if (!sniffing_enabled && chan.contentType == sniffedType) {
+        do_throw("Sniffing not enabled but sniffer called for " + chan.URI.spec);
+      }
+    } catch (e) {
+      do_throw("Unexpected exception: " + e);
+    }
+
+    throw Components.results.NS_ERROR_ABORT;
+  },
+
+  onDataAvailable: function test_ODA() {
+    throw Components.results.NS_ERROR_UNEXPECTED;
+  },
+
+  onStopRequest: function test_onStopR(request, ctx, status) {
+    run_test_iteration(this._iteration);
+    do_test_finished();
+  },
+
+  _iteration: 1
+};
+
+function makeChan(url) {
+  var chan = NetUtil.newChannel({ uri: url, loadUsingSystemPrincipal: true});
+  if (sniffing_enabled)
+    chan.loadFlags |= Components.interfaces.nsIChannel.LOAD_CALL_CONTENT_SNIFFERS;
+
+  return chan;
+}
+
+var httpserv = null;
+var urls = null;
+
+function run_test() {
+  httpserv = new HttpServer();
+  httpserv.start(-1);
+
+  urls = [
+  // NOTE: First URL here runs without our content sniffer
+  "data:" + unknownType + ", Some text",
+  "data:" + unknownType + ", Text", // Make sure sniffing works even if we
+                                    // used the unknown content sniffer too
+  "data:text/plain, Some more text",
+    "http://localhost:" + httpserv.identity.primaryPort
+];
+
+  Components.manager.nsIComponentRegistrar.registerFactory(snifferCID,
+    "Unit test content sniffer", snifferContract, sniffer);
+
+  run_test_iteration(1);
+}
+
+function run_test_iteration(index) {
+  if (index > urls.length) {
+    if (sniffing_enabled) {
+        sniffing_enabled = false;
+        index = listener._iteration = 1;
+    } else {
+        do_test_pending();
+        httpserv.stop(do_test_finished);
+        return; // we're done
+    }
+  }
+
+  if (sniffing_enabled && index == 2) {
+    // Register our sniffer only here
+    // This also makes sure that dynamic registration is working
+    var catMan = Components.classes["@mozilla.org/categorymanager;1"]
+                           .getService(Components.interfaces.nsICategoryManager);
+    catMan.nsICategoryManager.addCategoryEntry(categoryName, "unit test",
+                                               snifferContract, false, true);
+  }
+
+  var chan = makeChan(urls[index - 1]);
+
+  listener._iteration++;
+  chan.asyncOpen2(listener);
+
+  do_test_pending();
+}
+