2 files changed, 99 insertions, 0 deletions
diff --git a/testing/web-platform/tests/common/utils.js b/testing/web-platform/tests/common/utils.js
new file mode 100644
index 0000000000..62e742bee7
--- /dev/null
+++ b/testing/web-platform/tests/common/utils.js
@@ -0,0 +1,98 @@
+/**
+ * Create an absolute URL from `options` and defaulting unspecified properties to `window.location`.
+ * @param {Object} options - a `Location`-like object
+ * @param {string} options.hostname
+ * @param {string} options.subdomain - prepend subdomain to the hostname
+ * @param {string} options.port
+ * @param {string} options.path
+ * @param {string} options.query
+ * @param {string} options.hash
+ * @returns {string}
+ */
+function make_absolute_url(options) {
+    var loc = window.location;
+    var protocol = get(options, "protocol", loc.protocol);
+    if (protocol[protocol.length - 1] != ":") {
+        protocol += ":";
+    }
+
+    var hostname = get(options, "hostname", loc.hostname);
+
+    var subdomain = get(options, "subdomain");
+    if (subdomain) {
+        hostname = subdomain + "." + hostname;
+    }
+
+    var port = get(options, "port", loc.port)
+    var path = get(options, "path", loc.pathname);
+    var query = get(options, "query", loc.search);
+    var hash = get(options, "hash", loc.hash)
+
+    var url = protocol + "//" + hostname;
+    if (port) {
+        url += ":" + port;
+    }
+
+    if (path[0] != "/") {
+        url += "/";
+    }
+    url += path;
+    if (query) {
+        if (query[0] != "?") {
+            url += "?";
+        }
+        url += query;
+    }
+    if (hash) {
+        if (hash[0] != "#") {
+            url += "#";
+        }
+        url += hash;
+    }
+    return url;
+}
+
+/** @private */
+function get(obj, name, default_val) {
+    if (obj.hasOwnProperty(name)) {
+        return obj[name];
+    }
+    return default_val;
+}
+
+/**
+ * Generate a new UUID.
+ * @returns {string}
+ */
+function token() {
+    var uuid = [to_hex(rand_int(32), 8),
+                to_hex(rand_int(16), 4),
+                to_hex(0x4000 | rand_int(12), 4),
+                to_hex(0x8000 | rand_int(14), 4),
+                to_hex(rand_int(48), 12)].join("-")
+    return uuid;
+}
+
+/** @private */
+function rand_int(bits) {
+    if (bits < 1 || bits > 53) {
+        throw new TypeError();
+    } else {
+        if (bits >= 1 && bits <= 30) {
+            return 0 | ((1 << bits) * Math.random());
+        } else {
+            var high = (0 | ((1 << (bits - 30)) * Math.random())) * (1 << 30);
+            var low = 0 | ((1 << 30) * Math.random());
+            return  high + low;
+        }
+    }
+}
+
+/** @private */
+function to_hex(x, length) {
+    var rv = x.toString(16);
+    while (rv.length < length) {
+        rv = "0" + rv;
+    }
+    return rv;
+}
diff --git a/testing/web-platform/tests/common/utils.js.headers b/testing/web-platform/tests/common/utils.js.headers
new file mode 100644
index 0000000000..6805c323df
--- /dev/null
+++ b/testing/web-platform/tests/common/utils.js.headers
@@ -0,0 +1 @@
+Content-Type: text/javascript; charset=utf-8