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+<!DOCTYPE HTML>
+<html>
+<head>
+<title>Example with iframe that notifies containing document via callbacks</title>
+<script src="../testharness.js"></script>
+<script src="../testharnessreport.js"></script>
+</head>
+<body onload="start_test_in_iframe()">
+<h1>Callbacks From Tests Running In An IFRAME</h1>
+<p>A test is run inside an <tt>iframe</tt> with a same origin document. The
+containing document should receive callbacks as the tests progress inside the
+<tt>iframe</tt>. A single passing test is expected in the summary below.
+<div id="log"></div>
+
+<script>
+var callbacks = [];
+var START = 1
+var TEST_STATE = 2
+var RESULT = 3
+var COMPLETION = 4
+var test_complete = false;
+
+setup({explicit_done: true});
+
+// The following callbacks are called for tests in this document as well as the
+// tests in the IFRAME. Currently, callbacks invoked from this document and any
+// child document are indistinguishable from each other.
+
+function start_callback(properties) {
+ callbacks.push(START);
+}
+
+function test_state_callback(test) {
+ callbacks.push(TEST_STATE);
+}
+
+function result_callback(test) {
+ callbacks.push(RESULT);
+}
+
+function completion_callback(tests, status) {
+ if (test_complete) {
+ return;
+ }
+ test_complete = true;
+ callbacks.push(COMPLETION);
+ verify_received_callbacks();
+ done();
+}
+
+function verify_received_callbacks() {
+ var copy_of_callbacks = callbacks.slice(0);
+
+ // Note that you can't run test assertions directly in a callback even if
+ // this is a file test. When the callback is invoked from a same-origin child
+ // page, the callstack reaches into the calling child document. Any
+ // exception thrown in a callback will be handled by the child rather than
+ // this document.
+ test(
+ function() {
+ // callbacks list should look like:
+ // START 1*(TEST_STATE) RESULT COMPLETION
+ assert_equals(copy_of_callbacks.shift(), START,
+ "The first received callback should be 'start_callback'.");
+ assert_equals(copy_of_callbacks.shift(), TEST_STATE,
+ "'test_state_callback' should be received before any " +
+ "result or completion callbacks.");
+ while(copy_of_callbacks.length > 0) {
+ var callback = copy_of_callbacks.shift();
+ if (callback != TEST_STATE) {
+ copy_of_callbacks.unshift(callback);
+ break;
+ }
+ }
+ assert_equals(copy_of_callbacks.shift(), RESULT,
+ "'test_state_callback' should be followed by 'result_callback'.");
+ assert_equals(copy_of_callbacks.shift(), COMPLETION,
+ "Final 'result_callback' should be followed by 'completion_callback'.");
+ assert_equals(copy_of_callbacks.length, 0,
+ "'completion_callback' should be the last callback.");
+ });
+}
+
+function start_test_in_iframe() {
+ // This document is going to clear any received callbacks and maintain
+ // radio silence until the test in the iframe runs to completion. The
+ // completion_callback() will then complete the testing on this document.
+ callbacks.length = 0;
+ var iframe = document.createElement("iframe");
+ // apisample6.html has a single test.
+ iframe.src = "apisample6.html";
+ iframe.style.setProperty("display", "none");
+ document.getElementById("target").appendChild(iframe);
+}
+</script>
+
+<div id="target">
+</div>
+</body>