1 files changed, 59 insertions, 0 deletions
diff --git a/devtools/client/inspector/computed/test/browser_computed_browser-styles.js b/devtools/client/inspector/computed/test/browser_computed_browser-styles.js
new file mode 100644
index 0000000000..52477d21ed
--- /dev/null
+++ b/devtools/client/inspector/computed/test/browser_computed_browser-styles.js
@@ -0,0 +1,59 @@
+/* Any copyright is dedicated to the Public Domain.
+ http://creativecommons.org/publicdomain/zero/1.0/ */
+
+"use strict";
+
+// Tests that the checkbox to include browser styles works properly.
+
+const TEST_URI = `
+  <style type="text/css">
+    .matches {
+      color: #F00;
+    }
+  </style>
+  <span id="matches" class="matches">Some styled text</span>
+`;
+
+add_task(async function () {
+  await addTab("data:text/html;charset=utf-8," + encodeURIComponent(TEST_URI));
+  const { inspector, view } = await openComputedView();
+  await selectNode("#matches", inspector);
+
+  info("Checking the default styles");
+  is(
+    isPropertyVisible("color", view),
+    true,
+    "span #matches color property is visible"
+  );
+  is(
+    isPropertyVisible("background-color", view),
+    false,
+    "span #matches background-color property is hidden"
+  );
+
+  info("Toggling the browser styles");
+  const doc = view.styleDocument;
+  const checkbox = doc.querySelector(".includebrowserstyles");
+  const onRefreshed = inspector.once("computed-view-refreshed");
+  checkbox.click();
+  await onRefreshed;
+
+  info("Checking the browser styles");
+  is(isPropertyVisible("color", view), true, "span color property is visible");
+  is(
+    isPropertyVisible("background-color", view),
+    true,
+    "span background-color property is visible"
+  );
+});
+
+function isPropertyVisible(name, view) {
+  info("Checking property visibility for " + name);
+  const propertyViews = view.propertyViews;
+  for (const propView of propertyViews) {
+    if (propView.name == name) {
+      return propView.visible;
+    }
+  }
+  return false;
+}