1 files changed, 60 insertions, 0 deletions
diff --git a/devtools/client/inspector/markup/test/browser_markup_void_elements_html.js b/devtools/client/inspector/markup/test/browser_markup_void_elements_html.js
new file mode 100644
index 0000000000..09f6e0e06c
--- /dev/null
+++ b/devtools/client/inspector/markup/test/browser_markup_void_elements_html.js
@@ -0,0 +1,60 @@
+/* Any copyright is dedicated to the Public Domain.
+ http://creativecommons.org/publicdomain/zero/1.0/ */
+
+"use strict";
+
+// Test void element display in the markupview.
+const TEST_URL = URL_ROOT + "doc_markup_void_elements.html";
+
+add_task(async function () {
+  const { inspector } = await openInspectorForURL(TEST_URL);
+  const { win } = inspector.markup;
+
+  info("check non-void element closing tag is displayed");
+  const { editor } = await getContainerForSelector("h1", inspector);
+  ok(
+    !editor.elt.classList.contains("void-element"),
+    "h1 element does not have void-element class"
+  );
+  Assert.notStrictEqual(
+    !editor.elt.querySelector(".close").style.display,
+    "none",
+    "h1 element tag is not hidden"
+  );
+
+  info("check void element closing tag is hidden in HTML document");
+  let container = await getContainerForSelector("img", inspector);
+  ok(
+    container.editor.elt.classList.contains("void-element"),
+    "img element has the expected class"
+  );
+  let closeElement = container.editor.elt.querySelector(".close");
+  let computedStyle = win.getComputedStyle(closeElement);
+  Assert.strictEqual(
+    computedStyle.display,
+    "none",
+    "img closing tag is hidden"
+  );
+
+  info("check void element with pseudo element");
+  const hrNodeFront = await getNodeFront("hr.before", inspector);
+  container = getContainerForNodeFront(hrNodeFront, inspector);
+  ok(
+    container.editor.elt.classList.contains("void-element"),
+    "hr element has the expected class"
+  );
+  closeElement = container.editor.elt.querySelector(".close");
+  computedStyle = win.getComputedStyle(closeElement);
+  Assert.strictEqual(computedStyle.display, "none", "hr closing tag is hidden");
+
+  info("check expanded void element closing tag is not hidden");
+  await inspector.markup.expandNode(hrNodeFront);
+  await waitForMultipleChildrenUpdates(inspector);
+  ok(container.expanded, "hr container is expanded");
+  computedStyle = win.getComputedStyle(closeElement);
+  Assert.strictEqual(
+    computedStyle.display,
+    "none",
+    "hr closing tag is not hidden anymore"
+  );
+});