1 files changed, 81 insertions, 0 deletions
diff --git a/devtools/client/inspector/rules/test/browser_rules_grid-toggle_01.js b/devtools/client/inspector/rules/test/browser_rules_grid-toggle_01.js
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index 0000000000..21097c907a
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+++ b/devtools/client/inspector/rules/test/browser_rules_grid-toggle_01.js
@@ -0,0 +1,81 @@
+/* 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 the display of the
+// grid highlighter.
+
+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 = getRuleViewProperty(view, "#grid", "display").valueSpan;
+  const gridToggle = container.querySelector(".js-toggle-grid-highlighter");
+
+  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(
+    !gridToggle.classList.contains("active"),
+    "Grid highlighter toggle button is not active."
+  );
+  ok(!highlighters.gridHighlighters.size, "No CSS grid highlighter is shown.");
+
+  info("Toggling ON the CSS grid highlighter from the rule-view.");
+  const onHighlighterShown = waitForHighlighterTypeShown(HIGHLIGHTER_TYPE);
+  gridToggle.click();
+  await onHighlighterShown;
+
+  info(
+    "Checking the CSS grid highlighter is created and toggle button is active in " +
+      "the rule-view."
+  );
+  ok(
+    !gridToggle.hasAttribute("disabled"),
+    "Grid highlighter toggle is not disabled."
+  );
+  ok(
+    gridToggle.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 rule-view.");
+  const onHighlighterHidden = waitForHighlighterTypeHidden(HIGHLIGHTER_TYPE);
+  gridToggle.click();
+  await onHighlighterHidden;
+
+  info(
+    "Checking the CSS grid highlighter is not shown and toggle button is not active " +
+      "in the rule-view."
+  );
+  ok(
+    !gridToggle.hasAttribute("disabled"),
+    "Grid highlighter toggle is not disabled."
+  );
+  ok(
+    !gridToggle.classList.contains("active"),
+    "Grid highlighter toggle button is not active."
+  );
+  ok(!highlighters.gridHighlighters.size, "No CSS grid highlighter is shown.");
+});