1 files changed, 43 insertions, 0 deletions
diff --git a/devtools/client/inspector/flexbox/test/browser_flexbox_container_and_item.js b/devtools/client/inspector/flexbox/test/browser_flexbox_container_and_item.js
new file mode 100644
index 0000000000..d77ec6d9e4
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+++ b/devtools/client/inspector/flexbox/test/browser_flexbox_container_and_item.js
@@ -0,0 +1,43 @@
+/* Any copyright is dedicated to the Public Domain.
+ http://creativecommons.org/publicdomain/zero/1.0/ */
+
+"use strict";
+
+// Test that the flex container accordion and flex item accordion are both rendered when
+// the selected element is both a flex container and item.
+
+const TEST_URI = `
+  <style type='text/css'>
+    .container {
+      display: flex;
+    }
+  </style>
+  <div id="container" class="container">
+    <div id="item" class="container">
+      <div></div>
+    </div>
+  </div>
+`;
+
+add_task(async function () {
+  await addTab("data:text/html;charset=utf-8," + encodeURIComponent(TEST_URI));
+  const { inspector, flexboxInspector } = await openLayoutView();
+  const { document: doc } = flexboxInspector;
+
+  const onAccordionsRendered = waitForDOM(doc, ".accordion-item", 4);
+  await selectNode("#item", inspector);
+  const [flexItemPane, flexContainerPane] = await onAccordionsRendered;
+
+  ok(flexItemPane, "The flex item accordion pane is rendered.");
+  ok(flexContainerPane, "The flex container accordion pane is rendered.");
+  is(
+    flexItemPane.children[0].textContent,
+    "Flex Item of div#container.container",
+    "Got the correct header for the flex item pane."
+  );
+  is(
+    flexContainerPane.children[0].textContent,
+    "Flex Container",
+    "Got the correct header for the flex container pane."
+  );
+});