1 files changed, 144 insertions, 0 deletions
diff --git a/netwerk/test/unit/test_bug1064258.js b/netwerk/test/unit/test_bug1064258.js
new file mode 100644
index 0000000000..9be44254b5
--- /dev/null
+++ b/netwerk/test/unit/test_bug1064258.js
@@ -0,0 +1,144 @@
+/**
+ * Check how nsICachingChannel.cacheOnlyMetadata works.
+ * - all channels involved in this test are set cacheOnlyMetadata = true
+ * - do a previously uncached request for a long living content
+ * - check we have downloaded the content from the server (channel provides it)
+ * - check the entry has metadata, but zero-length content
+ * - load the same URL again, now cached
+ * - check the channel is giving no content (no call to OnDataAvailable) but succeeds
+ * - repeat again, but for a different URL that is not cached (immediately expires)
+ * - only difference is that we get a newer version of the content from the server during the second request
+ */
+
+"use strict";
+
+const { HttpServer } = ChromeUtils.importESModule(
+  "resource://testing-common/httpd.sys.mjs"
+);
+
+ChromeUtils.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 });
+}
+
+const responseBody1 = "response body 1";
+const responseBody2a = "response body 2a";
+const responseBody2b = "response body 2b";
+
+function contentHandler1(metadata, response) {
+  response.setHeader("Content-Type", "text/plain");
+  response.setHeader("Cache-control", "max-age=999999");
+  response.bodyOutputStream.write(responseBody1, responseBody1.length);
+}
+
+var content2passCount = 0;
+
+function contentHandler2(metadata, response) {
+  response.setHeader("Content-Type", "text/plain");
+  response.setHeader("Cache-control", "no-cache");
+  switch (content2passCount++) {
+    case 0:
+      response.setHeader("ETag", "testetag");
+      response.bodyOutputStream.write(responseBody2a, responseBody2a.length);
+      break;
+    case 1:
+      Assert.ok(metadata.hasHeader("If-None-Match"));
+      Assert.equal(metadata.getHeader("If-None-Match"), "testetag");
+      response.bodyOutputStream.write(responseBody2b, responseBody2b.length);
+      break;
+    default:
+      throw new Error("Unexpected request in the test");
+  }
+}
+
+function run_test() {
+  httpServer = new HttpServer();
+  httpServer.registerPathHandler("/content1", contentHandler1);
+  httpServer.registerPathHandler("/content2", contentHandler2);
+  httpServer.start(-1);
+
+  run_test_content1a();
+  do_test_pending();
+}
+
+function run_test_content1a() {
+  var chan = make_channel(URL + "/content1");
+  let caching = chan.QueryInterface(Ci.nsICachingChannel);
+  caching.cacheOnlyMetadata = true;
+  chan.asyncOpen(new ChannelListener(contentListener1a, null));
+}
+
+function contentListener1a(request, buffer) {
+  Assert.equal(buffer, responseBody1);
+
+  asyncOpenCacheEntry(URL + "/content1", "disk", 0, null, cacheCheck1);
+}
+
+function cacheCheck1(status, entry) {
+  Assert.equal(status, 0);
+  Assert.equal(entry.dataSize, 0);
+  try {
+    Assert.notEqual(entry.getMetaDataElement("response-head"), null);
+  } catch (ex) {
+    do_throw("Missing response head");
+  }
+
+  var chan = make_channel(URL + "/content1");
+  let caching = chan.QueryInterface(Ci.nsICachingChannel);
+  caching.cacheOnlyMetadata = true;
+  chan.asyncOpen(new ChannelListener(contentListener1b, null, CL_IGNORE_CL));
+}
+
+function contentListener1b(request, buffer) {
+  request.QueryInterface(Ci.nsIHttpChannel);
+  Assert.equal(request.requestMethod, "GET");
+  Assert.equal(request.responseStatus, 200);
+  Assert.equal(request.getResponseHeader("Cache-control"), "max-age=999999");
+
+  Assert.equal(buffer, "");
+  run_test_content2a();
+}
+
+// Now same set of steps but this time for an immediately expiring content.
+
+function run_test_content2a() {
+  var chan = make_channel(URL + "/content2");
+  let caching = chan.QueryInterface(Ci.nsICachingChannel);
+  caching.cacheOnlyMetadata = true;
+  chan.asyncOpen(new ChannelListener(contentListener2a, null));
+}
+
+function contentListener2a(request, buffer) {
+  Assert.equal(buffer, responseBody2a);
+
+  asyncOpenCacheEntry(URL + "/content2", "disk", 0, null, cacheCheck2);
+}
+
+function cacheCheck2(status, entry) {
+  Assert.equal(status, 0);
+  Assert.equal(entry.dataSize, 0);
+  try {
+    Assert.notEqual(entry.getMetaDataElement("response-head"), null);
+    Assert.ok(
+      entry.getMetaDataElement("response-head").match("etag: testetag")
+    );
+  } catch (ex) {
+    do_throw("Missing response head");
+  }
+
+  var chan = make_channel(URL + "/content2");
+  let caching = chan.QueryInterface(Ci.nsICachingChannel);
+  caching.cacheOnlyMetadata = true;
+  chan.asyncOpen(new ChannelListener(contentListener2b, null));
+}
+
+function contentListener2b(request, buffer) {
+  Assert.equal(buffer, responseBody2b);
+
+  httpServer.stop(do_test_finished);
+}