1 files changed, 106 insertions, 0 deletions
diff --git a/netwerk/test/unit/test_rcwn_interrupted.js b/netwerk/test/unit/test_rcwn_interrupted.js
new file mode 100644
index 0000000000..b761e26269
--- /dev/null
+++ b/netwerk/test/unit/test_rcwn_interrupted.js
@@ -0,0 +1,106 @@
+/*
+
+Checkes if the concurrent cache read/write works when the write is interrupted because of max-entry-size limits.
+This is enhancement of 29a test, this test checks that cocurrency is resumed when the first channel is interrupted
+in the middle of reading and the second channel already consumed some content from the cache entry.
+This test is using a resumable response.
+- with a profile, set max-entry-size to 1 (=1024 bytes)
+- first channel makes a request for a resumable response
+- second channel makes a request for the same resource, concurrent read happens
+- first channel sets predicted data size on the entry with every chunk, it's doomed on 1024
+- second channel now must engage interrupted concurrent write algorithm and read the rest of the content from the network
+- both channels must deliver full content w/o errors
+
+*/
+
+"use strict";
+
+const { HttpServer } = ChromeUtils.import("resource://testing-common/httpd.js");
+
+var httpProtocolHandler = Cc[
+  "@mozilla.org/network/protocol;1?name=http"
+].getService(Ci.nsIHttpProtocolHandler);
+
+XPCOMUtils.defineLazyGetter(this, "URL", function () {
+  return "http://localhost:" + httpServer.identity.primaryPort;
+});
+
+var httpServer = null;
+
+function make_channel(url, callback, ctx) {
+  return NetUtil.newChannel({ uri: url, loadUsingSystemPrincipal: true });
+}
+
+// need something bigger than 1024 bytes
+const responseBody =
+  "0123456789abcdef0123456789abcdef0123456789abcdef0123456789abcdef0123456789abcdef0123456789abcdef0123456789abcdef0123456789abcdef" +
+  "0123456789abcdef0123456789abcdef0123456789abcdef0123456789abcdef0123456789abcdef0123456789abcdef0123456789abcdef0123456789abcdef" +
+  "0123456789abcdef0123456789abcdef0123456789abcdef0123456789abcdef0123456789abcdef0123456789abcdef0123456789abcdef0123456789abcdef" +
+  "0123456789abcdef0123456789abcdef0123456789abcdef0123456789abcdef0123456789abcdef0123456789abcdef0123456789abcdef0123456789abcdef" +
+  "0123456789abcdef0123456789abcdef0123456789abcdef0123456789abcdef0123456789abcdef0123456789abcdef0123456789abcdef0123456789abcdef" +
+  "0123456789abcdef0123456789abcdef0123456789abcdef0123456789abcdef0123456789abcdef0123456789abcdef0123456789abcdef0123456789abcdef" +
+  "0123456789abcdef0123456789abcdef0123456789abcdef0123456789abcdef0123456789abcdef0123456789abcdef0123456789abcdef0123456789abcdef" +
+  "0123456789abcdef0123456789abcdef0123456789abcdef0123456789abcdef0123456789abcdef0123456789abcdef0123456789abcdef0123456789abcdef" +
+  "0123456789abcdef0123456789abcdef0123456789abcdef0123456789abcdef0123456789abcdef0123456789abcdef0123456789abcdef0123456789abcdef" +
+  "0123456789abcdef0123456789abcdef0123456789abcdef0123456789abcdef0123456789abcdef0123456789abcdef0123456789abcdef0123456789abcdef" +
+  "0123456789abcdef0123456789abcdef0123456789abcdef0123456789abcdef0123456789abcdef0123456789abcdef0123456789abcdef0123456789abcdef";
+
+function contentHandler(metadata, response) {
+  response.processAsync();
+  do_timeout(500, () => {
+    response.setHeader("Content-Type", "text/plain");
+    response.setHeader("ETag", "Just testing");
+    response.setHeader("Cache-Control", "max-age=99999");
+    response.setHeader("Accept-Ranges", "bytes");
+    response.setHeader("Content-Length", "" + responseBody.length);
+    if (metadata.hasHeader("If-Range")) {
+      response.setStatusLine(metadata.httpVersion, 206, "Partial Content");
+
+      let len = responseBody.length;
+      response.setHeader("Content-Range", "0-" + (len - 1) + "/" + len);
+    }
+    response.bodyOutputStream.write(responseBody, responseBody.length);
+
+    response.finish();
+  });
+}
+
+function run_test() {
+  // Static check
+  Assert.ok(responseBody.length > 1024);
+
+  do_get_profile();
+
+  Services.prefs.setIntPref("browser.cache.disk.max_entry_size", 1);
+  Services.prefs.setBoolPref("network.http.rcwn.enabled", false);
+
+  httpServer = new HttpServer();
+  httpServer.registerPathHandler("/content", contentHandler);
+  httpServer.start(-1);
+
+  httpProtocolHandler.EnsureHSTSDataReady().then(function () {
+    var chan1 = make_channel(URL + "/content");
+    chan1.asyncOpen(
+      new ChannelListener(firstTimeThrough, null, CL_IGNORE_DELAYS)
+    );
+    var chan2 = make_channel(URL + "/content");
+    chan2
+      .QueryInterface(Ci.nsIRaceCacheWithNetwork)
+      .test_delayCacheEntryOpeningBy(200);
+    chan2.QueryInterface(Ci.nsIRaceCacheWithNetwork).test_triggerNetwork(50);
+    chan2.asyncOpen(
+      new ChannelListener(secondTimeThrough, null, CL_IGNORE_DELAYS)
+    );
+  });
+
+  do_test_pending();
+}
+
+function firstTimeThrough(request, buffer) {
+  Assert.equal(buffer, responseBody);
+}
+
+function secondTimeThrough(request, buffer) {
+  Assert.equal(buffer, responseBody);
+  httpServer.stop(do_test_finished);
+}