1 files changed, 52 insertions, 0 deletions
diff --git a/editor/libeditor/tests/test_texteditor_textnode.html b/editor/libeditor/tests/test_texteditor_textnode.html
new file mode 100644
index 0000000000..d93f714649
--- /dev/null
+++ b/editor/libeditor/tests/test_texteditor_textnode.html
@@ -0,0 +1,52 @@
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>Test for Bug 1713334</title>
+<script src="/tests/SimpleTest/SimpleTest.js"></script>
+<script src="/tests/SimpleTest/EventUtils.js"></script>
+<link rel="stylesheet" href="/tests/SimpleTest/test.css">
+<input id="input">
+<textarea id="textarea"></textarea>
+<script>
+"use strict";
+
+function assertChild(div, content) {
+  const name = div.parentElement.localName;
+  is(div.firstChild.nodeType, Node.TEXT_NODE, `<${name}>: The first node of the root element must be a text node`);
+  is(div.firstChild.textContent, content, `<${name}>: The content of the text node is wrong`);
+}
+
+function test(element) {
+  element.focus();
+
+  const { rootElement } = SpecialPowers.wrap(element).editor;
+  assertChild(rootElement, "");
+
+  element.value = "";
+  assertChild(rootElement, "");
+
+  element.value = "foo"
+  assertChild(rootElement, "foo");
+
+  element.value = "";
+  assertChild(rootElement, "");
+
+  element.value = "foo";
+  const selection =
+    SpecialPowers.wrap(element).
+    editor.
+    selectionController.getSelection(
+      SpecialPowers.Ci.nsISelectionController.SELECTION_NORMAL
+    );
+  selection.setBaseAndExtent(rootElement, 0, rootElement, 1);
+  document.execCommand("delete");
+  assertChild(rootElement, "");
+}
+
+SimpleTest.waitForExplicitFinish();
+SimpleTest.waitForFocus(() => {
+  test(document.all.input);
+  test(document.all.textarea);
+
+  SimpleTest.finish();
+});
+</script>