1 files changed, 95 insertions, 0 deletions
diff --git a/devtools/client/inspector/rules/test/browser_rules_grid-toggle_02.js b/devtools/client/inspector/rules/test/browser_rules_grid-toggle_02.js
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index 0000000000..2f168126a6
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+++ b/devtools/client/inspector/rules/test/browser_rules_grid-toggle_02.js
@@ -0,0 +1,95 @@
+/* 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 from an overridden 'display: grid'
+// declaration.
+
+const TEST_URI = `
+  <style type='text/css'>
+    #grid {
+      display: grid;
+    }
+    div, ul {
+      display: grid;
+    }
+  </style>
+  <ul id="grid">
+    <li id="cell1">cell1</li>
+    <li id="cell2">cell2</li>
+  </ul>
+`;
+
+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 = getRuleViewProperty(view, "#grid", "display").valueSpan;
+  const gridToggle = container.querySelector(".js-toggle-grid-highlighter");
+  const overriddenContainer = getRuleViewProperty(
+    view,
+    "div, ul",
+    "display"
+  ).valueSpan;
+  const overriddenGridToggle =
+    overriddenContainer.querySelector(".ruleview-grid");
+
+  info("Checking the initial state of the CSS grid toggle in the rule-view.");
+  ok(
+    !gridToggle.hasAttribute("disabled"),
+    "Grid highlighter toggle is not disabled."
+  );
+  ok(
+    !overriddenGridToggle.hasAttribute("disabled"),
+    "Grid highlighter toggle is not disabled."
+  );
+  ok(
+    !gridToggle.classList.contains("active") &&
+      !overriddenGridToggle.classList.contains("active"),
+    "Grid highlighter toggle buttons are not active."
+  );
+  ok(!highlighters.gridHighlighters.size, "No CSS grid highlighter is shown.");
+
+  info(
+    "Toggling ON the CSS grid highlighter from the overridden rule in the rule-view."
+  );
+  const onHighlighterShown = waitForHighlighterTypeShown(HIGHLIGHTER_TYPE);
+  overriddenGridToggle.click();
+  await onHighlighterShown;
+
+  info(
+    "Checking the CSS grid highlighter is created and toggle buttons are active in " +
+      "the rule-view."
+  );
+  ok(
+    gridToggle.classList.contains("active") &&
+      overriddenGridToggle.classList.contains("active"),
+    "Grid highlighter toggle is active."
+  );
+  is(highlighters.gridHighlighters.size, 1, "CSS grid highlighter is shown.");
+
+  info(
+    "Toggling off the CSS grid highlighter from the normal grid declaration in the " +
+      "rule-view."
+  );
+  const onHighlighterHidden = waitForHighlighterTypeHidden(HIGHLIGHTER_TYPE);
+  gridToggle.click();
+  await onHighlighterHidden;
+
+  info(
+    "Checking the CSS grid highlighter is not shown and toggle buttons are not " +
+      "active in the rule-view."
+  );
+  ok(
+    !gridToggle.classList.contains("active") &&
+      !overriddenGridToggle.classList.contains("active"),
+    "Grid highlighter toggle buttons are not active."
+  );
+  ok(!highlighters.gridHighlighters.size, "No CSS grid highlighter is shown.");
+});