1 files changed, 84 insertions, 0 deletions
diff --git a/devtools/client/inspector/boxmodel/test/browser_boxmodel_update-in-iframes.js b/devtools/client/inspector/boxmodel/test/browser_boxmodel_update-in-iframes.js
new file mode 100644
index 0000000000..eee72f696c
--- /dev/null
+++ b/devtools/client/inspector/boxmodel/test/browser_boxmodel_update-in-iframes.js
@@ -0,0 +1,84 @@
+/* Any copyright is dedicated to the Public Domain.
+ http://creativecommons.org/publicdomain/zero/1.0/ */
+
+"use strict";
+
+// Test that the box model view for elements within iframes also updates when they
+// change
+
+add_task(async function () {
+  const tab = await addTab(URL_ROOT + "doc_boxmodel_iframe1.html");
+  const browser = tab.linkedBrowser;
+  const { inspector, boxmodel } = await openLayoutView();
+
+  await testResizingInIframe(inspector, boxmodel, browser);
+  await testReflowsAfterIframeDeletion(inspector, boxmodel, browser);
+});
+
+async function testResizingInIframe(inspector, boxmodel, browser) {
+  info("Test that resizing an element in an iframe updates its box model");
+
+  info("Selecting the nested test node");
+  await selectNodeInFrames(["iframe", "iframe", "div"], inspector);
+
+  info("Checking that the box model view shows the right value");
+  const sizeElt = boxmodel.document.querySelector(".boxmodel-size > span");
+  is(sizeElt.textContent, "400\u00D7200");
+
+  info("Listening for box model view changes and modifying its size");
+  const onUpdated = waitForUpdate(inspector);
+  await setStyleInNestedIframe(browser, "div", "width", "200px");
+  await onUpdated;
+  ok(true, "Box model view got updated");
+
+  info("Checking that the box model view shows the right value after update");
+  is(sizeElt.textContent, "200\u00D7200");
+}
+
+async function testReflowsAfterIframeDeletion(inspector, boxmodel, browser) {
+  info(
+    "Test reflows are still sent to the box model view after deleting an " +
+      "iframe"
+  );
+
+  info("Deleting the iframe2");
+  const onInspectorUpdated = inspector.once("inspector-updated");
+  await removeNestedIframe(browser);
+  await onInspectorUpdated;
+
+  info("Selecting the test node in iframe1");
+  await selectNodeInFrames(["iframe", "p"], inspector);
+
+  info("Checking that the box model view shows the right value");
+  const sizeElt = boxmodel.document.querySelector(".boxmodel-size > span");
+  is(sizeElt.textContent, "100\u00D7100");
+
+  info("Listening for box model view changes and modifying its size");
+  const onUpdated = waitForUpdate(inspector);
+  await setStyleInIframe(browser, "p", "width", "200px");
+  await onUpdated;
+  ok(true, "Box model view got updated");
+
+  info("Checking that the box model view shows the right value after update");
+  is(sizeElt.textContent, "200\u00D7100");
+}
+
+async function setStyleInIframe(browser, selector, propertyName, value) {
+  const context = await getBrowsingContextInFrames(browser, ["iframe"]);
+  return setStyle(context, selector, propertyName, value);
+}
+
+async function setStyleInNestedIframe(browser, selector, propertyName, value) {
+  const context = await getBrowsingContextInFrames(browser, [
+    "iframe",
+    "iframe",
+  ]);
+  return setStyle(context, selector, propertyName, value);
+}
+
+async function removeNestedIframe(browser) {
+  const context = await getBrowsingContextInFrames(browser, ["iframe"]);
+  await SpecialPowers.spawn(context, [], () =>
+    content.document.querySelector("iframe").remove()
+  );
+}