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-rw-r--r--netwerk/test/unit/test_bug1064258.js144
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diff --git a/netwerk/test/unit/test_bug1064258.js b/netwerk/test/unit/test_bug1064258.js
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+/**
+ * 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+ * - only difference is that we get a newer version of the content from the server during the second request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);
+}