1 files changed, 20 insertions, 0 deletions
diff --git a/testing/web-platform/tests/html/semantics/selectors/pseudo-classes/utils.js b/testing/web-platform/tests/html/semantics/selectors/pseudo-classes/utils.js
new file mode 100644
index 0000000000..7a2fb77f10
--- /dev/null
+++ b/testing/web-platform/tests/html/semantics/selectors/pseudo-classes/utils.js
@@ -0,0 +1,20 @@
+function getElementsByIds(ids) {
+  var result = [];
+  ids.forEach(function(id) {
+    result.push(document.getElementById(id));
+  });
+  return result;
+}
+
+function testSelectorIdsMatch(selector, ids, testName) {
+  test(function(){
+    var elements = document.querySelectorAll(selector);
+    assert_array_equals([...elements], getElementsByIds(ids));
+  }, testName);
+}
+
+function testSelectorElementsMatch(selector, elements, testName) {
+  test(function(){
+    assert_array_equals([...document.querySelectorAll(selector)], elements);
+  }, testName);
+}