1 files changed, 53 insertions, 0 deletions
diff --git a/devtools/client/inspector/rules/test/browser_rules_edit-display-grid-property.js b/devtools/client/inspector/rules/test/browser_rules_edit-display-grid-property.js
new file mode 100644
index 0000000000..e3556ed8ff
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+++ b/devtools/client/inspector/rules/test/browser_rules_edit-display-grid-property.js
@@ -0,0 +1,53 @@
+/* Any copyright is dedicated to the Public Domain.
+ http://creativecommons.org/publicdomain/zero/1.0/ */
+
+"use strict";
+
+// Test toggling the grid highlighter in the rule view and modifying the 'display: grid'
+// declaration.
+
+const TEST_URI = `
+  <style type='text/css'>
+    #grid {
+      display: grid;
+    }
+  </style>
+  <div id="grid">
+    <div id="cell1">cell1</div>
+    <div id="cell2">cell2</div>
+  </div>
+`;
+
+add_task(async function () {
+  await addTab("data:text/html;charset=utf-8," + encodeURIComponent(TEST_URI));
+  const { inspector, view } = await openRuleView();
+  const highlighters = view.highlighters;
+  const HIGHLIGHTER_TYPE = inspector.highlighters.TYPES.GRID;
+  const { waitForHighlighterTypeShown, waitForHighlighterTypeHidden } =
+    getHighlighterTestHelpers(inspector);
+
+  await selectNode("#grid", inspector);
+  const container = (
+    await getRuleViewProperty(view, "#grid", "display", { wait: true })
+  ).valueSpan;
+  let gridToggle = container.querySelector(".js-toggle-grid-highlighter");
+
+  info("Toggling ON the CSS grid highlighter from the rule-view.");
+  const onHighlighterShown = waitForHighlighterTypeShown(HIGHLIGHTER_TYPE);
+  gridToggle.click();
+  await onHighlighterShown;
+
+  info("Edit the 'grid' property value to 'block'.");
+  const editor = await focusEditableField(view, container);
+  const onHighlighterHidden = waitForHighlighterTypeHidden(HIGHLIGHTER_TYPE);
+  const onDone = view.once("ruleview-changed");
+  editor.input.value = "block;";
+  EventUtils.synthesizeKey("VK_RETURN", {}, view.styleWindow);
+  await onHighlighterHidden;
+  await onDone;
+
+  info("Check the grid highlighter and grid toggle button are hidden.");
+  gridToggle = container.querySelector(".js-toggle-grid-highlighter");
+  ok(!gridToggle, "Grid highlighter toggle is not visible.");
+  ok(!highlighters.gridHighlighters.size, "No CSS grid highlighter is shown.");
+});