1 files changed, 37 insertions, 0 deletions
diff --git a/devtools/client/inspector/markup/test/browser_markup_tag_edit_11.js b/devtools/client/inspector/markup/test/browser_markup_tag_edit_11.js
new file mode 100644
index 0000000000..7e30ffe056
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+++ b/devtools/client/inspector/markup/test/browser_markup_tag_edit_11.js
@@ -0,0 +1,37 @@
+/* Any copyright is dedicated to the Public Domain.
+ http://creativecommons.org/publicdomain/zero/1.0/ */
+
+"use strict";
+
+// Bug 1090874 - Tests that a node is not recreated when it's tagname editor
+// is blurred and no changes were done.
+
+const TEST_URL = "data:text/html;charset=utf-8,<div></div>";
+
+add_task(async function () {
+  let isEditTagNameCalled = false;
+
+  const { inspector } = await openInspectorForURL(TEST_URL);
+
+  // Overriding the editTagName walkerActor method here to check that it isn't
+  // called when blurring the tagname field.
+  inspector.walker.editTagName = function () {
+    isEditTagNameCalled = true;
+  };
+
+  const container = await focusNode("div", inspector);
+  const tagEditor = container.editor.tag;
+
+  info("Blurring the tagname field");
+  tagEditor.blur();
+  is(isEditTagNameCalled, false, "The editTagName method wasn't called");
+
+  info("Updating the tagname to uppercase");
+  await focusNode("div", inspector);
+  setEditableFieldValue(tagEditor, "DIV", inspector);
+  is(isEditTagNameCalled, false, "The editTagName method wasn't called");
+
+  info("Updating the tagname to a different value");
+  setEditableFieldValue(tagEditor, "SPAN", inspector);
+  is(isEditTagNameCalled, true, "The editTagName method was called");
+});