1 files changed, 78 insertions, 0 deletions
diff --git a/devtools/client/inspector/markup/test/browser_markup_subgrid_display_badge.js b/devtools/client/inspector/markup/test/browser_markup_subgrid_display_badge.js
new file mode 100644
index 0000000000..0118e5ae33
--- /dev/null
+++ b/devtools/client/inspector/markup/test/browser_markup_subgrid_display_badge.js
@@ -0,0 +1,78 @@
+/* Any copyright is dedicated to the Public Domain.
+ http://creativecommons.org/publicdomain/zero/1.0/ */
+
+"use strict";
+
+const TEST_URL = URL_ROOT + "doc_markup_subgrid.html";
+
+add_task(async function () {
+  const { inspector } = await openInspectorForURL(TEST_URL);
+  const { highlighters, store } = inspector;
+
+  info("Check the subgrid display badge is shown and not active.");
+  await selectNode("main", inspector);
+  const eltContainer = await getContainerForSelector("main", inspector);
+  const subgridDisplayBadge = eltContainer.elt.querySelector(
+    ".inspector-badge.interactive[data-display]"
+  );
+  ok(
+    !subgridDisplayBadge.classList.contains("active"),
+    "subgrid display badge is not active."
+  );
+  ok(
+    subgridDisplayBadge.classList.contains("interactive"),
+    "subgrid display badge is interactive."
+  );
+
+  info("Check the initial state of the grid highlighter.");
+  ok(
+    !highlighters.gridHighlighters.size,
+    "No CSS grid highlighter exists in the highlighters overlay."
+  );
+
+  info("Toggling ON the CSS grid highlighter from the subgrid display badge.");
+  const onHighlighterShown = highlighters.once("grid-highlighter-shown");
+  let onCheckboxChange = waitUntilState(
+    store,
+    state => state.grids.length === 2 && state.grids[1].highlighted
+  );
+  subgridDisplayBadge.click();
+  await onHighlighterShown;
+  await onCheckboxChange;
+
+  info(
+    "Check that the CSS grid highlighter is created and the display badge state."
+  );
+  is(
+    highlighters.gridHighlighters.size,
+    1,
+    "CSS grid highlighter is created in the highlighters overlay."
+  );
+  ok(
+    subgridDisplayBadge.classList.contains("active"),
+    "subgrid display badge is active."
+  );
+  ok(
+    subgridDisplayBadge.classList.contains("interactive"),
+    "subgrid display badge is interactive."
+  );
+
+  info("Toggling OFF the CSS grid highlighter from the subgrid display badge.");
+  const onHighlighterHidden = highlighters.once("grid-highlighter-hidden");
+  onCheckboxChange = waitUntilState(
+    store,
+    state => state.grids.length == 2 && !state.grids[1].highlighted
+  );
+  subgridDisplayBadge.click();
+  await onHighlighterHidden;
+  await onCheckboxChange;
+
+  ok(
+    !subgridDisplayBadge.classList.contains("active"),
+    "subgrid display badge is not active."
+  );
+  ok(
+    subgridDisplayBadge.classList.contains("interactive"),
+    "subgrid display badge is interactive."
+  );
+});