1 files changed, 86 insertions, 0 deletions
diff --git a/devtools/client/inspector/rules/test/browser_rules_selector-highlighter_01.js b/devtools/client/inspector/rules/test/browser_rules_selector-highlighter_01.js
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index 0000000000..f83a6f08ea
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+++ b/devtools/client/inspector/rules/test/browser_rules_selector-highlighter_01.js
@@ -0,0 +1,86 @@
+/* Any copyright is dedicated to the Public Domain.
+ http://creativecommons.org/publicdomain/zero/1.0/ */
+
+"use strict";
+
+// Test that the selector highlighter is created when clicking on a selector
+// icon in the rule view.
+
+const TEST_URI = `
+  <style type="text/css">
+    body, p, td {
+      background: red;
+    }
+  </style>
+  Test the selector highlighter
+`;
+
+add_task(async function () {
+  await addTab("data:text/html;charset=utf-8," + encodeURIComponent(TEST_URI));
+  const { inspector, view } = await openRuleView();
+  const { waitForHighlighterTypeShown, waitForHighlighterTypeHidden } =
+    getHighlighterTestHelpers(inspector);
+
+  const activeHighlighter = inspector.highlighters.getActiveHighlighter(
+    inspector.highlighters.TYPES.SELECTOR
+  );
+  ok(!activeHighlighter, "No selector highlighter is active");
+
+  info("Clicking on a selector icon");
+  let data = await clickSelectorIcon(view, "body, p, td");
+
+  ok(data.highlighter, "The selector highlighter instance was created");
+  ok(data.isShown, "The selector highlighter was shown");
+
+  info("Click on the same icon to disable highlighter");
+  data = await clickSelectorIcon(view, "body, p, td");
+  ok(!data.isShown, "The highlighter is not visible anymore");
+
+  info("Check that the selector highlighter can be toggled from the keyboard");
+  const ruleEl = getRuleViewRule(view, "body, p, td", 0);
+  const selectorContainerEl = ruleEl.querySelector(
+    ".ruleview-selectors-container"
+  );
+  const selectorHighlighterIcon = ruleEl.querySelector(
+    ".ruleview-selectorhighlighter"
+  );
+  is(
+    selectorHighlighterIcon.getAttribute("aria-pressed"),
+    "false",
+    "selector highlighter icon is not pressed by default"
+  );
+  selectorContainerEl.focus();
+  EventUtils.synthesizeKey("VK_TAB", {}, selectorContainerEl.ownerGlobal);
+  await waitFor(
+    () =>
+      selectorContainerEl.ownerDocument.activeElement ===
+      selectorHighlighterIcon
+  );
+  ok(true, "selector highlighter button can be focused");
+
+  const onHighlighterShown = waitForHighlighterTypeShown(
+    inspector.highlighters.TYPES.SELECTOR
+  );
+  EventUtils.synthesizeKey("VK_RETURN", {}, selectorContainerEl.ownerGlobal);
+  data = await onHighlighterShown;
+
+  ok(true, "The selector highlighter was shown from the keyboard");
+  ok(data.highlighter, "The selector highlighter instance was created");
+
+  await waitFor(
+    () => selectorHighlighterIcon.getAttribute("aria-pressed") === "true"
+  );
+  ok(true, "selector highlighter icon is pressed");
+
+  const onHighlighterHidden = waitForHighlighterTypeHidden(
+    inspector.highlighters.TYPES.SELECTOR
+  );
+  EventUtils.synthesizeKey("VK_RETURN", {}, selectorContainerEl.ownerGlobal);
+  await onHighlighterHidden;
+  ok(true, "The selector highlighter was hidden from the keyboard");
+  is(
+    selectorHighlighterIcon.getAttribute("aria-pressed"),
+    "false",
+    "selector highlighter icon is no longer pressed"
+  );
+});