1 files changed, 38 insertions, 0 deletions
diff --git a/testing/web-platform/tests/uievents/textInput/support/common.js b/testing/web-platform/tests/uievents/textInput/support/common.js
new file mode 100644
index 0000000000..25c39da3e2
--- /dev/null
+++ b/testing/web-platform/tests/uievents/textInput/support/common.js
@@ -0,0 +1,38 @@
+function elDesc(el) {
+  let rv = `<${el.localName}`;
+  if (el.hasAttribute('contenteditable')) {
+    rv += ` contenteditable="${el.getAttribute('contenteditable')}"`;
+  }
+  if (el.hasAttribute('type')) {
+    rv += ` type="${el.getAttribute('type')}"`;
+  }
+  rv += `>`;
+  return rv;
+}
+
+function setSelection(el, selectionStart, selectionEnd) {
+  if (el instanceof HTMLInputElement || el instanceof HTMLTextAreaElement) {
+    el.selectionStart = selectionStart;
+    el.selectionEnd = selectionEnd;
+  } else {
+    const s = getSelection();
+    s.removeAllRanges();
+    const r = new Range();
+    r.setStart(el.firstChild || el, selectionStart);
+    r.setEnd(el.firstChild || el, selectionEnd);
+    s.addRange(r);
+  }
+}
+
+function getValue(el) {
+  if (el instanceof HTMLInputElement || el instanceof HTMLTextAreaElement) {
+    return el.value;
+  }
+  return el.innerHTML;
+}
+
+const keyMapping = {
+  "Enter": "\uE006",
+  "Backspace": "\uE003",
+  "Delete": "\uE017",
+};