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-rw-r--r--netwerk/test/unit/test_traceable_channel.js145
1 files changed, 145 insertions, 0 deletions
diff --git a/netwerk/test/unit/test_traceable_channel.js b/netwerk/test/unit/test_traceable_channel.js
new file mode 100644
index 0000000000..3390682bcf
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+++ b/netwerk/test/unit/test_traceable_channel.js
@@ -0,0 +1,145 @@
+"use strict";
+
+// Test nsITraceableChannel interface.
+// Replace original listener with TracingListener that modifies body of HTTP
+// response. Make sure that body received by original channel's listener
+// is correctly modified.
+
+const { HttpServer } = ChromeUtils.importESModule(
+ "resource://testing-common/httpd.sys.mjs"
+);
+
+var httpserver = new HttpServer();
+httpserver.start(-1);
+const PORT = httpserver.identity.primaryPort;
+
+var pipe = null;
+var streamSink = null;
+
+var originalBody = "original http response body";
+var gotOnStartRequest = false;
+
+function TracingListener() {}
+
+TracingListener.prototype = {
+ onStartRequest(request) {
+ dump("*** tracing listener onStartRequest\n");
+
+ gotOnStartRequest = true;
+
+ request.QueryInterface(Ci.nsIHttpChannelInternal);
+
+ // local/remote addresses broken in e10s: disable for now
+ Assert.equal(request.localAddress, "127.0.0.1");
+ Assert.equal(request.localPort > 0, true);
+ Assert.notEqual(request.localPort, PORT);
+ Assert.equal(request.remoteAddress, "127.0.0.1");
+ Assert.equal(request.remotePort, PORT);
+
+ // Make sure listener can't be replaced after OnStartRequest was called.
+ request.QueryInterface(Ci.nsITraceableChannel);
+ try {
+ var newListener = new TracingListener();
+ newListener.listener = request.setNewListener(newListener);
+ } catch (e) {
+ dump("TracingListener.onStartRequest swallowing exception: " + e + "\n");
+ return; // OK
+ }
+ do_throw("replaced channel's listener during onStartRequest.");
+ },
+
+ onStopRequest(request, statusCode) {
+ dump("*** tracing listener onStopRequest\n");
+
+ Assert.equal(gotOnStartRequest, true);
+
+ try {
+ var sin = Cc["@mozilla.org/scriptableinputstream;1"].createInstance(
+ Ci.nsIScriptableInputStream
+ );
+
+ streamSink.close();
+ var input = pipe.inputStream;
+ sin.init(input);
+ Assert.equal(sin.available(), originalBody.length);
+
+ var result = sin.read(originalBody.length);
+ Assert.equal(result, originalBody);
+
+ input.close();
+ } catch (e) {
+ dump("TracingListener.onStopRequest swallowing exception: " + e + "\n");
+ } finally {
+ httpserver.stop(do_test_finished);
+ }
+ },
+
+ QueryInterface: ChromeUtils.generateQI(["nsIRequestObserver"]),
+
+ listener: null,
+};
+
+function HttpResponseExaminer() {}
+
+HttpResponseExaminer.prototype = {
+ register() {
+ Services.obs.addObserver(this, "http-on-examine-response", true);
+ dump("Did HttpResponseExaminer.register\n");
+ },
+
+ // Replace channel's listener.
+ observe(subject, topic, data) {
+ dump("In HttpResponseExaminer.observe\n");
+ try {
+ subject.QueryInterface(Ci.nsITraceableChannel);
+
+ var tee = Cc["@mozilla.org/network/stream-listener-tee;1"].createInstance(
+ Ci.nsIStreamListenerTee
+ );
+ var newListener = new TracingListener();
+ pipe = Cc["@mozilla.org/pipe;1"].createInstance(Ci.nsIPipe);
+ pipe.init(false, false, 0, 0xffffffff, null);
+ streamSink = pipe.outputStream;
+
+ var originalListener = subject.setNewListener(tee);
+ tee.init(originalListener, streamSink, newListener);
+ } catch (e) {
+ do_throw("can't replace listener " + e);
+ }
+ dump("Did HttpResponseExaminer.observe\n");
+ },
+
+ QueryInterface: ChromeUtils.generateQI([
+ "nsIObserver",
+ "nsISupportsWeakReference",
+ ]),
+};
+
+function test_handler(metadata, response) {
+ response.setHeader("Content-Type", "text/html", false);
+ response.setStatusLine(metadata.httpVersion, 200, "OK");
+ response.bodyOutputStream.write(originalBody, originalBody.length);
+}
+
+function make_channel(url) {
+ return NetUtil.newChannel({
+ uri: url,
+ loadUsingSystemPrincipal: true,
+ }).QueryInterface(Ci.nsIHttpChannel);
+}
+
+// Check if received body is correctly modified.
+function channel_finished(request, input, ctx) {
+ httpserver.stop(do_test_finished);
+}
+
+function run_test() {
+ var observer = new HttpResponseExaminer();
+ observer.register();
+
+ httpserver.registerPathHandler("/testdir", test_handler);
+
+ var channel = make_channel("http://localhost:" + PORT + "/testdir");
+ channel.asyncOpen(new ChannelListener(channel_finished));
+ do_test_pending();
+}