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//
// This script emulates the test called "Freshness"
// by Mark Nottingham, located at
//
// http://mnot.net/javascript/xmlhttprequest/cache.html
//
// The issue with Mr. Nottinghams page is that the server
// always seems to send an Expires-header in the response,
// breaking the finer details of the test. This script has
// full control of response-headers, however, and can perform
// the intended testing plus some extra stuff.
//
// Please see RFC 2616 section 13.2.1 6th paragraph for the
// definition of "explicit expiration time" being used here.
Cu.import("resource://testing-common/httpd.js");
Cu.import("resource://gre/modules/NetUtil.jsm");
var httpserver = new HttpServer();
var index = 0;
var tests = [
{url: "/freshness", server: "0", expected: "0"},
{url: "/freshness", server: "1", expected: "0"}, // cached
// RFC 2616 section 13.9 2nd paragraph says not to heuristically cache
// querystring, but we allow it to maintain web compat
{url: "/freshness?a", server: "2", expected: "2"},
{url: "/freshness?a", server: "3", expected: "2"},
// explicit expiration dates in the future should be cached
{url: "/freshness?b", server: "4", expected: "4",
responseheader: "Expires: "+getDateString(1)},
{url: "/freshness?b", server: "5", expected: "4"},// cached due to Expires
{url: "/freshness?c", server: "6", expected: "6",
responseheader: "Cache-Control: max-age=3600"},
{url: "/freshness?c", server: "7", expected: "6"}, // cached due to max-age
// explicit expiration dates in the past should NOT be cached
{url: "/freshness?d", server: "8", expected: "8",
responseheader: "Expires: "+getDateString(-1)},
{url: "/freshness?d", server: "9", expected: "9"},
{url: "/freshness?e", server: "10", expected: "10",
responseheader: "Cache-Control: max-age=0"},
{url: "/freshness?e", server: "11", expected: "11"},
{url: "/freshness", server: "99", expected: "0"}, // cached
];
function logit(i, data) {
dump(tests[i].url + "\t requested [" + tests[i].server + "]" +
" got [" + data + "] expected [" + tests[i].expected + "]");
if (tests[i].responseheader)
dump("\t[" + tests[i].responseheader + "]");
dump("\n");
}
function setupChannel(suffix, value) {
var chan = NetUtil.newChannel({
uri: "http://localhost:" + httpserver.identity.primaryPort + suffix,
loadUsingSystemPrincipal: true
});
var httpChan = chan.QueryInterface(Components.interfaces.nsIHttpChannel);
httpChan.requestMethod = "GET";
httpChan.setRequestHeader("x-request", value, false);
return httpChan;
}
function triggerNextTest() {
var channel = setupChannel(tests[index].url, tests[index].server);
channel.asyncOpen2(new ChannelListener(checkValueAndTrigger, null));
}
function checkValueAndTrigger(request, data, ctx) {
logit(index, data);
do_check_eq(tests[index].expected, data);
if (index < tests.length-1) {
index++;
triggerNextTest();
} else {
httpserver.stop(do_test_finished);
}
}
function run_test() {
httpserver.registerPathHandler("/freshness", handler);
httpserver.start(-1);
// clear cache
evict_cache_entries();
triggerNextTest();
do_test_pending();
}
function handler(metadata, response) {
var body = metadata.getHeader("x-request");
response.setHeader("Content-Type", "text/plain", false);
response.setHeader("Date", getDateString(0), false);
var header = tests[index].responseheader;
if (header == null) {
response.setHeader("Last-Modified", getDateString(-1), false);
} else {
var splitHdr = header.split(": ");
response.setHeader(splitHdr[0], splitHdr[1], false);
}
response.setStatusLine(metadata.httpVersion, 200, "OK");
response.bodyOutputStream.write(body, body.length);
}
function getDateString(yearDelta) {
var months = ['Jan', 'Feb', 'Mar', 'Apr', 'May', 'Jun',
'Jul', 'Aug', 'Sep', 'Oct', 'Nov', 'Dec'];
var days = ['Sun', 'Mon', 'Tue', 'Wed', 'Thu', 'Fri', 'Sat'];
var d = new Date();
return days[d.getUTCDay()] + ", " +
d.getUTCDate() + " " +
months[d.getUTCMonth()] + " " +
(d.getUTCFullYear() + yearDelta) + " " +
d.getUTCHours() + ":" + d.getUTCMinutes() +":" +
d.getUTCSeconds() + " UTC";
}
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