1 files changed, 100 insertions, 0 deletions
diff --git a/netwerk/test/unit/test_bug1279246.js b/netwerk/test/unit/test_bug1279246.js
new file mode 100644
index 0000000000..be73dbee14
--- /dev/null
+++ b/netwerk/test/unit/test_bug1279246.js
@@ -0,0 +1,100 @@
+"use strict";
+
+const { HttpServer } = ChromeUtils.importESModule(
+  "resource://testing-common/httpd.sys.mjs"
+);
+
+var httpserver = new HttpServer();
+var pass = 0;
+var responseBody = [0x0b, 0x02, 0x80, 0x74, 0x65, 0x73, 0x74, 0x0a, 0x03];
+var responseLen = 5;
+var testUrl = "/test/brotli";
+
+function setupChannel() {
+  return NetUtil.newChannel({
+    uri: "http://localhost:" + httpserver.identity.primaryPort + testUrl,
+    loadUsingSystemPrincipal: true,
+  });
+}
+
+function Listener() {}
+
+Listener.prototype = {
+  _buffer: null,
+
+  QueryInterface: ChromeUtils.generateQI([
+    "nsIStreamListener",
+    "nsIRequestObserver",
+  ]),
+
+  onStartRequest(request) {
+    Assert.equal(request.status, Cr.NS_OK);
+    this._buffer = "";
+  },
+
+  onDataAvailable(request, stream, offset, cnt) {
+    if (pass == 0) {
+      this._buffer = this._buffer.concat(read_stream(stream, cnt));
+    } else {
+      request.QueryInterface(Ci.nsICachingChannel);
+      if (!request.isFromCache()) {
+        do_throw("Response is not from the cache");
+      }
+
+      request.cancel(Cr.NS_ERROR_ABORT);
+    }
+  },
+
+  onStopRequest(request, status) {
+    if (pass == 0) {
+      Assert.equal(this._buffer.length, responseLen);
+      pass++;
+
+      var channel = setupChannel();
+      channel.loadFlags = Ci.nsIRequest.VALIDATE_NEVER;
+      channel.asyncOpen(new Listener());
+    } else {
+      httpserver.stop(do_test_finished);
+      prefs.setCharPref("network.http.accept-encoding", cePref);
+    }
+  },
+};
+
+var prefs;
+var cePref;
+function run_test() {
+  do_get_profile();
+
+  prefs = Services.prefs;
+  cePref = prefs.getCharPref("network.http.accept-encoding");
+  prefs.setCharPref("network.http.accept-encoding", "gzip, deflate, br");
+
+  // Disable rcwn to make cache behavior deterministic.
+  prefs.setBoolPref("network.http.rcwn.enabled", false);
+
+  httpserver.registerPathHandler(testUrl, handler);
+  httpserver.start(-1);
+
+  var channel = setupChannel();
+  channel.asyncOpen(new Listener());
+
+  do_test_pending();
+}
+
+function handler(metadata, response) {
+  Assert.equal(pass, 0); // the second response must be server from the cache
+
+  response.setStatusLine(metadata.httpVersion, 200, "OK");
+  response.setHeader("Content-Type", "text/plain", false);
+  response.setHeader("Content-Encoding", "br", false);
+  response.setHeader("Content-Length", "" + responseBody.length, false);
+
+  var bos = Cc["@mozilla.org/binaryoutputstream;1"].createInstance(
+    Ci.nsIBinaryOutputStream
+  );
+  bos.setOutputStream(response.bodyOutputStream);
+
+  response.processAsync();
+  bos.writeByteArray(responseBody);
+  response.finish();
+}