1 files changed, 20 insertions, 0 deletions
diff --git a/testing/web-platform/tests/html/semantics/forms/the-select-element/resources/show-picker-child-iframe.html b/testing/web-platform/tests/html/semantics/forms/the-select-element/resources/show-picker-child-iframe.html
new file mode 100644
index 0000000000..bba3989824
--- /dev/null
+++ b/testing/web-platform/tests/html/semantics/forms/the-select-element/resources/show-picker-child-iframe.html
@@ -0,0 +1,20 @@
+<!DOCTYPE html>
+<title>Test showPicker() in an iframe</title>
+<script type=module>
+    const urlParams = new URLSearchParams(location.search);
+    const documentDomain = urlParams.get('documentDomain');
+    if (documentDomain) {
+        document.domain = documentDomain;
+    }
+
+    let securityErrors = [];
+    const select = document.createElement("select");
+    try {
+        select.showPicker();
+    } catch (error) {
+        if (error instanceof DOMException && error.name == 'SecurityError') {
+            securityErrors.push("select");
+        }
+    }
+    parent.postMessage(securityErrors.join(','), "*");
+</script>
+\ No newline at end of file