diff --git a/shared-storage/cross-origin-create-worklet-data-origin-option.tentative.https.sub.html b/shared-storage/cross-origin-create-worklet-data-origin-option.tentative.https.sub.html
new file mode 100644
index 000000000000000..8242f3d10835ca4
--- /dev/null
+++ b/shared-storage/cross-origin-create-worklet-data-origin-option.tentative.https.sub.html
@@ -0,0 +1,35 @@
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diff --git a/shared-storage/resources/util.sub.js b/shared-storage/resources/util.sub.js
index 37b440da52a93ec..dc1ec780a24007d 100644
--- a/shared-storage/resources/util.sub.js
+++ b/shared-storage/resources/util.sub.js
@@ -117,3 +117,45 @@ async function loadNestedSharedStorageFrameInNewFrame(data) {
await windowPromise;
return {frame: frame, nestedFrame: nestedFrame, nestedFrameUrl: nestedSrc};
}
+
+async function testCreateWorkletWithDataOption(
+ test, data_origin, key, value, is_same_origin_script, expect_success) {
+ const sameOrigin = location.origin;
+ const crossOrigin = 'https://{{domains[www]}}:{{ports[https][0]}}';
+ const sameOriginScriptUrl = `/shared-storage/resources/simple-module.js`;
+ const scriptOrigin = is_same_origin_script ? sameOrigin : crossOrigin;
+ const scriptUrl = is_same_origin_script ? sameOriginScriptUrl :
+ crossOrigin + sameOriginScriptUrl;
+
+ try {
+ // Currently the `dataOrigin` option is not hooked up.
+ const worklet = await sharedStorage.createWorklet(
+ scriptUrl, {credentials: 'omit', dataOrigin: data_origin});
+
+ const ancestor_key = token();
+ let url0 =
+ generateURL('/shared-storage/resources/frame0.html', [ancestor_key]);
+
+ let select_url_result =
+ await worklet.selectURL('test-url-selection-operation', [{url: url0}], {
+ data: {'mockResult': 0, 'setKey': key, 'setValue': value},
+ resolveToConfig: true,
+ keepAlive: true
+ });
+
+ assert_true(validateSelectURLResult(select_url_result, true));
+ attachFencedFrame(select_url_result, 'opaque-ads');
+ const result0 = await nextValueFromServer(ancestor_key);
+ assert_equals(result0, 'frame0_loaded');
+
+ await verifyKeyValueForOrigin(key, value, scriptOrigin);
+ await deleteKeyForOrigin(key, scriptOrigin);
+ assert_true(expect_success, 'no error caught even though one was expected');
+ } catch (e) {
+ assert_false(
+ expect_success, 'expected success but error thrown: ' + e.toString());
+ assert_equals(e.name, 'TypeError');
+ } finally {
+ test.done();
+ }
+}
diff --git a/shared-storage/same-origin-create-worklet-data-origin-option.tentative.https.sub.html b/shared-storage/same-origin-create-worklet-data-origin-option.tentative.https.sub.html
new file mode 100644
index 000000000000000..c84246f65b1c182
--- /dev/null
+++ b/shared-storage/same-origin-create-worklet-data-origin-option.tentative.https.sub.html
@@ -0,0 +1,35 @@
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