1 files changed, 42 insertions, 0 deletions
diff --git a/devtools/client/inspector/boxmodel/test/browser_boxmodel_update-after-reload.js b/devtools/client/inspector/boxmodel/test/browser_boxmodel_update-after-reload.js
new file mode 100644
index 0000000000..f6d309c8e2
--- /dev/null
+++ b/devtools/client/inspector/boxmodel/test/browser_boxmodel_update-after-reload.js
@@ -0,0 +1,42 @@
+/* Any copyright is dedicated to the Public Domain.
+ http://creativecommons.org/publicdomain/zero/1.0/ */
+
+"use strict";
+
+// Test that the box model view continues to work after the page is reloaded
+
+add_task(async function () {
+  const tab = await addTab(URL_ROOT + "doc_boxmodel_iframe1.html");
+  const browser = tab.linkedBrowser;
+  const { inspector, boxmodel } = await openLayoutView();
+
+  info("Test that the box model view works on the first page");
+  await assertBoxModelView(inspector, boxmodel, browser);
+
+  info("Reload the page");
+  const onMarkupLoaded = waitForMarkupLoaded(inspector);
+  await reloadBrowser();
+  await onMarkupLoaded;
+
+  info("Test that the box model view works on the reloaded page");
+  await assertBoxModelView(inspector, boxmodel, browser);
+});
+
+async function assertBoxModelView(inspector, boxmodel, browser) {
+  await selectNode("p", inspector);
+
+  info("Checking that the box model view shows the right value");
+  const paddingElt = boxmodel.document.querySelector(
+    ".boxmodel-padding.boxmodel-top > span"
+  );
+  is(paddingElt.textContent, "50");
+
+  info("Listening for box model view changes and modifying the padding");
+  const onUpdated = waitForUpdate(inspector);
+  await setStyle(browser, "p", "padding", "20px");
+  await onUpdated;
+  ok(true, "Box model view got updated");
+
+  info("Checking that the box model view shows the right value after update");
+  is(paddingElt.textContent, "20");
+}