From 36d22d82aa202bb199967e9512281e9a53db42c9 Mon Sep 17 00:00:00 2001
From: Daniel Baumann <daniel.baumann@progress-linux.org>
Date: Sun, 7 Apr 2024 21:33:14 +0200
Subject: Adding upstream version 115.7.0esr.

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
---
 .../tests/workers/semantics/encodings/001.html     | 14 ++++
 .../tests/workers/semantics/encodings/001.js       |  1 +
 .../workers/semantics/encodings/001.js.headers     |  1 +
 .../tests/workers/semantics/encodings/002.html     | 14 ++++
 .../tests/workers/semantics/encodings/002.js       |  3 +
 .../workers/semantics/encodings/002.js.headers     |  1 +
 .../tests/workers/semantics/encodings/003-1.py     |  4 ++
 .../tests/workers/semantics/encodings/003.html     | 14 ++++
 .../tests/workers/semantics/encodings/003.js       |  5 ++
 .../tests/workers/semantics/encodings/004.html     | 14 ++++
 .../tests/workers/semantics/encodings/004.js       |  7 ++
 .../workers/semantics/encodings/004.worker.js      |  5 ++
 .../semantics/interface-objects/001.worker.js      | 83 +++++++++++++++++++++
 .../semantics/interface-objects/002.worker.js      | 43 +++++++++++
 .../workers/semantics/interface-objects/003.any.js | 84 ++++++++++++++++++++++
 .../workers/semantics/interface-objects/004.any.js | 38 ++++++++++
 .../workers/semantics/multiple-workers/001.html    | 23 ++++++
 .../workers/semantics/multiple-workers/001.js      | 11 +++
 .../workers/semantics/multiple-workers/002.html    | 21 ++++++
 .../workers/semantics/multiple-workers/002.js      |  1 +
 .../workers/semantics/multiple-workers/003.html    | 16 +++++
 .../workers/semantics/multiple-workers/003.js      | 13 ++++
 .../workers/semantics/multiple-workers/004-1.html  |  7 ++
 .../workers/semantics/multiple-workers/004-2.js    |  6 ++
 .../workers/semantics/multiple-workers/004.html    | 37 ++++++++++
 .../workers/semantics/multiple-workers/008-1.html  |  8 +++
 .../workers/semantics/multiple-workers/008.html    | 19 +++++
 .../workers/semantics/multiple-workers/008.js      |  6 ++
 .../semantics/multiple-workers/exposure.any.js     | 11 +++
 .../tests/workers/semantics/navigation/001-1.html  | 15 ++++
 .../tests/workers/semantics/navigation/001-1.js    |  1 +
 .../tests/workers/semantics/navigation/001.html    | 39 ++++++++++
 .../tests/workers/semantics/navigation/002.html    | 38 ++++++++++
 .../workers/semantics/reporting-errors/001.html    | 17 +++++
 .../workers/semantics/reporting-errors/001.js      | 28 ++++++++
 .../workers/semantics/reporting-errors/002.html    | 17 +++++
 .../workers/semantics/reporting-errors/002.js      | 34 +++++++++
 .../workers/semantics/reporting-errors/003.html    | 23 ++++++
 .../workers/semantics/reporting-errors/003.js      |  8 +++
 .../workers/semantics/reporting-errors/004-1.html  | 18 +++++
 .../workers/semantics/reporting-errors/004.html    | 26 +++++++
 .../workers/semantics/reporting-errors/004.js      |  6 ++
 .../tests/workers/semantics/run-a-worker/001.html  | 14 ++++
 .../tests/workers/semantics/run-a-worker/001.js    |  1 +
 .../tests/workers/semantics/run-a-worker/002.html  | 14 ++++
 .../tests/workers/semantics/run-a-worker/002.js    |  4 ++
 .../tests/workers/semantics/run-a-worker/003.html  | 15 ++++
 .../semantics/structured-clone/dedicated.html      | 33 +++++++++
 .../workers/semantics/structured-clone/shared.html | 37 ++++++++++
 .../tests/workers/semantics/xhr/001-1.xml          |  1 +
 .../tests/workers/semantics/xhr/001.html           | 16 +++++
 .../tests/workers/semantics/xhr/001.js             | 13 ++++
 .../tests/workers/semantics/xhr/002.html           | 16 +++++
 .../tests/workers/semantics/xhr/002.js             |  9 +++
 .../tests/workers/semantics/xhr/003.html           | 16 +++++
 .../tests/workers/semantics/xhr/003.js             | 17 +++++
 .../tests/workers/semantics/xhr/004.html           | 16 +++++
 .../tests/workers/semantics/xhr/004.js             | 11 +++
 .../tests/workers/semantics/xhr/005.html           | 21 ++++++
 .../tests/workers/semantics/xhr/006.html           | 21 ++++++
 .../tests/workers/semantics/xhr/support/001-1.xml  |  1 +
 .../tests/workers/semantics/xhr/support/005-1.js   |  5 ++
 .../tests/workers/semantics/xhr/support/006-1.js   |  7 ++
 63 files changed, 1068 insertions(+)
 create mode 100644 testing/web-platform/tests/workers/semantics/encodings/001.html
 create mode 100644 testing/web-platform/tests/workers/semantics/encodings/001.js
 create mode 100644 testing/web-platform/tests/workers/semantics/encodings/001.js.headers
 create mode 100644 testing/web-platform/tests/workers/semantics/encodings/002.html
 create mode 100644 testing/web-platform/tests/workers/semantics/encodings/002.js
 create mode 100644 testing/web-platform/tests/workers/semantics/encodings/002.js.headers
 create mode 100644 testing/web-platform/tests/workers/semantics/encodings/003-1.py
 create mode 100644 testing/web-platform/tests/workers/semantics/encodings/003.html
 create mode 100644 testing/web-platform/tests/workers/semantics/encodings/003.js
 create mode 100644 testing/web-platform/tests/workers/semantics/encodings/004.html
 create mode 100644 testing/web-platform/tests/workers/semantics/encodings/004.js
 create mode 100644 testing/web-platform/tests/workers/semantics/encodings/004.worker.js
 create mode 100644 testing/web-platform/tests/workers/semantics/interface-objects/001.worker.js
 create mode 100644 testing/web-platform/tests/workers/semantics/interface-objects/002.worker.js
 create mode 100644 testing/web-platform/tests/workers/semantics/interface-objects/003.any.js
 create mode 100644 testing/web-platform/tests/workers/semantics/interface-objects/004.any.js
 create mode 100644 testing/web-platform/tests/workers/semantics/multiple-workers/001.html
 create mode 100644 testing/web-platform/tests/workers/semantics/multiple-workers/001.js
 create mode 100644 testing/web-platform/tests/workers/semantics/multiple-workers/002.html
 create mode 100644 testing/web-platform/tests/workers/semantics/multiple-workers/002.js
 create mode 100644 testing/web-platform/tests/workers/semantics/multiple-workers/003.html
 create mode 100644 testing/web-platform/tests/workers/semantics/multiple-workers/003.js
 create mode 100644 testing/web-platform/tests/workers/semantics/multiple-workers/004-1.html
 create mode 100644 testing/web-platform/tests/workers/semantics/multiple-workers/004-2.js
 create mode 100644 testing/web-platform/tests/workers/semantics/multiple-workers/004.html
 create mode 100644 testing/web-platform/tests/workers/semantics/multiple-workers/008-1.html
 create mode 100644 testing/web-platform/tests/workers/semantics/multiple-workers/008.html
 create mode 100644 testing/web-platform/tests/workers/semantics/multiple-workers/008.js
 create mode 100644 testing/web-platform/tests/workers/semantics/multiple-workers/exposure.any.js
 create mode 100644 testing/web-platform/tests/workers/semantics/navigation/001-1.html
 create mode 100644 testing/web-platform/tests/workers/semantics/navigation/001-1.js
 create mode 100644 testing/web-platform/tests/workers/semantics/navigation/001.html
 create mode 100644 testing/web-platform/tests/workers/semantics/navigation/002.html
 create mode 100644 testing/web-platform/tests/workers/semantics/reporting-errors/001.html
 create mode 100644 testing/web-platform/tests/workers/semantics/reporting-errors/001.js
 create mode 100644 testing/web-platform/tests/workers/semantics/reporting-errors/002.html
 create mode 100644 testing/web-platform/tests/workers/semantics/reporting-errors/002.js
 create mode 100644 testing/web-platform/tests/workers/semantics/reporting-errors/003.html
 create mode 100644 testing/web-platform/tests/workers/semantics/reporting-errors/003.js
 create mode 100644 testing/web-platform/tests/workers/semantics/reporting-errors/004-1.html
 create mode 100644 testing/web-platform/tests/workers/semantics/reporting-errors/004.html
 create mode 100644 testing/web-platform/tests/workers/semantics/reporting-errors/004.js
 create mode 100644 testing/web-platform/tests/workers/semantics/run-a-worker/001.html
 create mode 100644 testing/web-platform/tests/workers/semantics/run-a-worker/001.js
 create mode 100644 testing/web-platform/tests/workers/semantics/run-a-worker/002.html
 create mode 100644 testing/web-platform/tests/workers/semantics/run-a-worker/002.js
 create mode 100644 testing/web-platform/tests/workers/semantics/run-a-worker/003.html
 create mode 100644 testing/web-platform/tests/workers/semantics/structured-clone/dedicated.html
 create mode 100644 testing/web-platform/tests/workers/semantics/structured-clone/shared.html
 create mode 100644 testing/web-platform/tests/workers/semantics/xhr/001-1.xml
 create mode 100644 testing/web-platform/tests/workers/semantics/xhr/001.html
 create mode 100644 testing/web-platform/tests/workers/semantics/xhr/001.js
 create mode 100644 testing/web-platform/tests/workers/semantics/xhr/002.html
 create mode 100644 testing/web-platform/tests/workers/semantics/xhr/002.js
 create mode 100644 testing/web-platform/tests/workers/semantics/xhr/003.html
 create mode 100644 testing/web-platform/tests/workers/semantics/xhr/003.js
 create mode 100644 testing/web-platform/tests/workers/semantics/xhr/004.html
 create mode 100644 testing/web-platform/tests/workers/semantics/xhr/004.js
 create mode 100644 testing/web-platform/tests/workers/semantics/xhr/005.html
 create mode 100644 testing/web-platform/tests/workers/semantics/xhr/006.html
 create mode 100644 testing/web-platform/tests/workers/semantics/xhr/support/001-1.xml
 create mode 100644 testing/web-platform/tests/workers/semantics/xhr/support/005-1.js
 create mode 100644 testing/web-platform/tests/workers/semantics/xhr/support/006-1.js

(limited to 'testing/web-platform/tests/workers/semantics')

diff --git a/testing/web-platform/tests/workers/semantics/encodings/001.html b/testing/web-platform/tests/workers/semantics/encodings/001.html
new file mode 100644
index 0000000000..05ee5e006b
--- /dev/null
+++ b/testing/web-platform/tests/workers/semantics/encodings/001.html
@@ -0,0 +1,14 @@
+<!doctype html>
+<title>encoding, dedicated worker</title>
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<div id=log></div>
+<script>
+async_test(function() {
+  var worker = new Worker('001.js');
+  worker.onmessage = this.step_func(function(e) {
+    assert_equals(e.data, '\u00e5');
+    this.done();
+  });
+});
+</script>
\ No newline at end of file
diff --git a/testing/web-platform/tests/workers/semantics/encodings/001.js b/testing/web-platform/tests/workers/semantics/encodings/001.js
new file mode 100644
index 0000000000..03bc557c33
--- /dev/null
+++ b/testing/web-platform/tests/workers/semantics/encodings/001.js
@@ -0,0 +1 @@
+postMessage('Ã¥');
\ No newline at end of file
diff --git a/testing/web-platform/tests/workers/semantics/encodings/001.js.headers b/testing/web-platform/tests/workers/semantics/encodings/001.js.headers
new file mode 100644
index 0000000000..5614aaa7f0
--- /dev/null
+++ b/testing/web-platform/tests/workers/semantics/encodings/001.js.headers
@@ -0,0 +1 @@
+Content-Type: text/javascript; charset=windows-1252
diff --git a/testing/web-platform/tests/workers/semantics/encodings/002.html b/testing/web-platform/tests/workers/semantics/encodings/002.html
new file mode 100644
index 0000000000..fecbffc18d
--- /dev/null
+++ b/testing/web-platform/tests/workers/semantics/encodings/002.html
@@ -0,0 +1,14 @@
+<!doctype html>
+<title>encoding, shared worker</title>
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<div id=log></div>
+<script>
+async_test(function() {
+  var worker = new SharedWorker('002.js', '');
+  worker.port.onmessage = this.step_func(function(e) {
+    assert_equals(e.data, '\u00e5');
+    this.done();
+  });
+});
+</script>
diff --git a/testing/web-platform/tests/workers/semantics/encodings/002.js b/testing/web-platform/tests/workers/semantics/encodings/002.js
new file mode 100644
index 0000000000..9dde7bbda9
--- /dev/null
+++ b/testing/web-platform/tests/workers/semantics/encodings/002.js
@@ -0,0 +1,3 @@
+onconnect = function(e) {
+  e.ports[0].postMessage('Ã¥');
+}
\ No newline at end of file
diff --git a/testing/web-platform/tests/workers/semantics/encodings/002.js.headers b/testing/web-platform/tests/workers/semantics/encodings/002.js.headers
new file mode 100644
index 0000000000..5614aaa7f0
--- /dev/null
+++ b/testing/web-platform/tests/workers/semantics/encodings/002.js.headers
@@ -0,0 +1 @@
+Content-Type: text/javascript; charset=windows-1252
diff --git a/testing/web-platform/tests/workers/semantics/encodings/003-1.py b/testing/web-platform/tests/workers/semantics/encodings/003-1.py
new file mode 100644
index 0000000000..4f5df2bb10
--- /dev/null
+++ b/testing/web-platform/tests/workers/semantics/encodings/003-1.py
@@ -0,0 +1,4 @@
+ # -*- coding: utf-8 -*-
+
+def main(request, response):
+    return u"PASS" if request.GET.first(b'x').decode('utf-8') == u'Ã¥' else u"FAIL"
diff --git a/testing/web-platform/tests/workers/semantics/encodings/003.html b/testing/web-platform/tests/workers/semantics/encodings/003.html
new file mode 100644
index 0000000000..095320e4d1
--- /dev/null
+++ b/testing/web-platform/tests/workers/semantics/encodings/003.html
@@ -0,0 +1,14 @@
+<!doctype html>
+<title>URL encoding, dedicated worker</title>
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<div id=log></div>
+<script>
+async_test(function() {
+  var worker = new Worker('003.js');
+  worker.onmessage = this.step_func(function(e) {
+    assert_true(e.data);
+    this.done();
+  });
+});
+</script>
\ No newline at end of file
diff --git a/testing/web-platform/tests/workers/semantics/encodings/003.js b/testing/web-platform/tests/workers/semantics/encodings/003.js
new file mode 100644
index 0000000000..35bda8bba8
--- /dev/null
+++ b/testing/web-platform/tests/workers/semantics/encodings/003.js
@@ -0,0 +1,5 @@
+var xhr = new XMLHttpRequest();
+xhr.open('GET', '003-1.py?x=Ã¥', false);
+xhr.send();
+var passed = xhr.responseText == 'PASS';
+postMessage(passed);
\ No newline at end of file
diff --git a/testing/web-platform/tests/workers/semantics/encodings/004.html b/testing/web-platform/tests/workers/semantics/encodings/004.html
new file mode 100644
index 0000000000..cd556b8190
--- /dev/null
+++ b/testing/web-platform/tests/workers/semantics/encodings/004.html
@@ -0,0 +1,14 @@
+<!doctype html>
+<title>URL encoding, shared worker</title>
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<div id=log></div>
+<script>
+async_test(function() {
+  var worker = new SharedWorker('004.js');
+  worker.port.onmessage = this.step_func(function(e) {
+    assert_true(e.data);
+    this.done();
+  });
+});
+</script>
\ No newline at end of file
diff --git a/testing/web-platform/tests/workers/semantics/encodings/004.js b/testing/web-platform/tests/workers/semantics/encodings/004.js
new file mode 100644
index 0000000000..5146929a73
--- /dev/null
+++ b/testing/web-platform/tests/workers/semantics/encodings/004.js
@@ -0,0 +1,7 @@
+onconnect = function(e) {
+  var xhr = new XMLHttpRequest();
+  xhr.open('GET', '003-1.py?x=Ã¥', false);
+  xhr.send();
+  var passed = xhr.responseText == 'PASS';
+  e.ports[0].postMessage(passed);
+}
\ No newline at end of file
diff --git a/testing/web-platform/tests/workers/semantics/encodings/004.worker.js b/testing/web-platform/tests/workers/semantics/encodings/004.worker.js
new file mode 100644
index 0000000000..28489a572b
--- /dev/null
+++ b/testing/web-platform/tests/workers/semantics/encodings/004.worker.js
@@ -0,0 +1,5 @@
+importScripts("/resources/testharness.js");
+test(function() {
+  assert_equals("ÿ", "\ufffd");
+}, "Decoding invalid utf-8");
+done();
diff --git a/testing/web-platform/tests/workers/semantics/interface-objects/001.worker.js b/testing/web-platform/tests/workers/semantics/interface-objects/001.worker.js
new file mode 100644
index 0000000000..80fc597380
--- /dev/null
+++ b/testing/web-platform/tests/workers/semantics/interface-objects/001.worker.js
@@ -0,0 +1,83 @@
+importScripts("/resources/testharness.js");
+var expected = [
+  // https://html.spec.whatwg.org/
+  "WorkerGlobalScope",
+  "DedicatedWorkerGlobalScope",
+  "Worker",
+  "SharedWorker",
+  "MessagePort",
+  "MessageEvent",
+  "WorkerNavigator",
+  "MessageChannel",
+  "WorkerLocation",
+  "ImageData",
+  "ImageBitmap",
+  "CanvasGradient",
+  "CanvasPattern",
+  "CanvasPath",
+  "TextMetrics",
+  "Path2D",
+  "PromiseRejectionEvent",
+  "EventSource",
+  "BroadcastChannel",
+  // https://websockets.spec.whatwg.org/
+  "WebSocket",
+  "CloseEvent",
+  // https://tc39.github.io/ecma262/
+  "ArrayBuffer",
+  "Int8Array",
+  "Uint8Array",
+  "Uint8ClampedArray",
+  "Int16Array",
+  "Uint16Array",
+  "Int32Array",
+  "Uint32Array",
+  "Float32Array",
+  "Float64Array",
+  "DataView",
+  // https://xhr.spec.whatwg.org/
+  "XMLHttpRequestEventTarget",
+  "XMLHttpRequestUpload",
+  "XMLHttpRequest",
+  "ProgressEvent",
+  "FormData",
+  // https://url.spec.whatwg.org/
+  "URL",
+  "URLSearchParams",
+  // https://w3c.github.io/FileAPI/
+  "File",
+  "Blob",
+  "FileList",
+  "FileReader",
+  "FileReaderSync",
+  // https://dom.spec.whatwg.org/
+  "EventTarget",
+  "ErrorEvent",
+  "Event",
+  "CustomEvent",
+  // https://webidl.spec.whatwg.org/
+  "DOMException",
+  // https://streams.spec.whatwg.org/
+  "ReadableStream",
+  "WritableStream",
+  "ByteLengthQueuingStrategy",
+  "CountQueuingStrategy",
+  // http://w3c.github.io/IndexedDB/
+  "IDBRequest",
+  "IDBOpenDBRequest",
+  "IDBVersionChangeEvent",
+  "IDBFactory",
+  "IDBDatabase",
+  "IDBObjectStore",
+  "IDBIndex",
+  "IDBKeyRange",
+  "IDBCursor",
+  "IDBCursorWithValue",
+  "IDBTransaction",
+];
+for (var i = 0; i < expected.length; ++i) {
+  test(function () {
+    assert_own_property(self, expected[i]);
+  }, "The " + expected[i] + " interface object should be exposed.");
+}
+done();
diff --git a/testing/web-platform/tests/workers/semantics/interface-objects/002.worker.js b/testing/web-platform/tests/workers/semantics/interface-objects/002.worker.js
new file mode 100644
index 0000000000..d4f48354ed
--- /dev/null
+++ b/testing/web-platform/tests/workers/semantics/interface-objects/002.worker.js
@@ -0,0 +1,43 @@
+importScripts("/resources/testharness.js");
+var unexpected = [
+  // https://html.spec.whatwg.org/
+  "SharedWorkerGlobalScope",
+  "AbstractView",
+  "AbstractWorker",
+  "ApplicationCache",
+  "Location",
+  "Navigator",
+  "Audio",
+  "HTMLCanvasElement",
+  "Path",
+  "CanvasProxy",
+  "CanvasRenderingContext2D",
+  "DrawingStyle",
+  "BeforeUnloadEvent",
+  "PopStateEvent",
+  "HashChangeEvent",
+  "PageTransitionEvent",
+  // https://dom.spec.whatwg.org/
+  "DOMImplementation",
+  // http://w3c.github.io/IndexedDB/
+  "IDBEnvironment",
+  // https://www.w3.org/TR/2010/NOTE-webdatabase-20101118/
+  "Database",
+  // https://w3c.github.io/uievents/
+  "UIEvent",
+  "FocusEvent",
+  "MouseEvent",
+  "WheelEvent",
+  "InputEvent",
+  "KeyboardEvent",
+  "CompositionEvent",
+  // https://w3c.github.io/webvtt/
+  "VTTCue",
+  "VTTRegion",
+];
+for (var i = 0; i < unexpected.length; ++i) {
+  test(function () {
+    assert_false(unexpected[i] in self);
+  }, "The " + unexpected[i] + " interface object should not be exposed.");
+}
+done();
diff --git a/testing/web-platform/tests/workers/semantics/interface-objects/003.any.js b/testing/web-platform/tests/workers/semantics/interface-objects/003.any.js
new file mode 100644
index 0000000000..4d595bccce
--- /dev/null
+++ b/testing/web-platform/tests/workers/semantics/interface-objects/003.any.js
@@ -0,0 +1,84 @@
+// META: global=sharedworker
+
+var expected = [
+  // https://html.spec.whatwg.org/
+  "ApplicationCache",
+  "WorkerGlobalScope",
+  "SharedWorkerGlobalScope",
+  "Worker",
+  "SharedWorker",
+  "MessagePort",
+  "MessageEvent",
+  "WorkerNavigator",
+  "MessageChannel",
+  "WorkerLocation",
+  "ImageData",
+  "ImageBitmap",
+  "CanvasGradient",
+  "CanvasPattern",
+  "CanvasPath",
+  "Path2D",
+  "PromiseRejectionEvent",
+  "EventSource",
+  "BroadcastChannel",
+  // https://websockets.spec.whatwg.org/
+  "WebSocket",
+  "CloseEvent",
+  // https://tc39.github.io/ecma262/
+  "ArrayBuffer",
+  "Int8Array",
+  "Uint8Array",
+  "Uint8ClampedArray",
+  "Int16Array",
+  "Uint16Array",
+  "Int32Array",
+  "Uint32Array",
+  "Float32Array",
+  "Float64Array",
+  "DataView",
+  // https://xhr.spec.whatwg.org/
+  "XMLHttpRequestEventTarget",
+  "XMLHttpRequestUpload",
+  "XMLHttpRequest",
+  "ProgressEvent",
+  "FormData",
+  // https://url.spec.whatwg.org/
+  "URL",
+  "URLSearchParams",
+  // https://w3c.github.io/FileAPI/
+  "File",
+  "Blob",
+  "FileList",
+  "FileReader",
+  "FileReaderSync",
+  // https://dom.spec.whatwg.org/
+  "EventTarget",
+  "ErrorEvent",
+  "Event",
+  "CustomEvent",
+  // https://webidl.spec.whatwg.org/
+  "DOMException",
+  // https://streams.spec.whatwg.org/
+  "ReadableStream",
+  "WritableStream",
+  "ByteLengthQueuingStrategy",
+  "CountQueuingStrategy",
+  // http://w3c.github.io/IndexedDB/
+  "IDBRequest",
+  "IDBOpenDBRequest",
+  "IDBVersionChangeEvent",
+  "IDBFactory",
+  "IDBDatabase",
+  "IDBObjectStore",
+  "IDBIndex",
+  "IDBKeyRange",
+  "IDBCursor",
+  "IDBCursorWithValue",
+  "IDBTransaction",
+];
+
+for (var i = 0; i < expected.length; ++i) {
+  test(function() {
+    assert_true(expected[i] in self);
+  }, "The " + expected[i] + " interface object should be exposed");
+}
diff --git a/testing/web-platform/tests/workers/semantics/interface-objects/004.any.js b/testing/web-platform/tests/workers/semantics/interface-objects/004.any.js
new file mode 100644
index 0000000000..822379e2c9
--- /dev/null
+++ b/testing/web-platform/tests/workers/semantics/interface-objects/004.any.js
@@ -0,0 +1,38 @@
+// META: global=sharedworker
+
+var unexpected = [
+  // https://html.spec.whatwg.org/
+  "DedicatedWorkerGlobalScope",
+  "AbstractView",
+  "AbstractWorker",
+  "Location",
+  "Navigator",
+  "DOMImplementation",
+  "Audio",
+  "HTMLCanvasElement",
+  "Path",
+  "CanvasProxy",
+  "CanvasRenderingContext2D",
+  "DrawingStyle",
+  "PopStateEvent",
+  "HashChangeEvent",
+  "PageTransitionEvent",
+  // http://w3c.github.io/IndexedDB/
+  "IDBEnvironment",
+  // https://www.w3.org/TR/2010/NOTE-webdatabase-20101118/
+  "Database",
+  // https://w3c.github.io/uievents/
+  "UIEvent",
+  "FocusEvent",
+  "MouseEvent",
+  "WheelEvent",
+  "InputEvent",
+  "KeyboardEvent",
+  "CompositionEvent",
+];
+
+for (var i = 0; i < unexpected.length; ++i) {
+  test(function() {
+    assert_false(unexpected[i] in self);
+  }, "The " + unexpected[i] + " interface object should not be exposed");
+}
diff --git a/testing/web-platform/tests/workers/semantics/multiple-workers/001.html b/testing/web-platform/tests/workers/semantics/multiple-workers/001.html
new file mode 100644
index 0000000000..f9e2bbeaba
--- /dev/null
+++ b/testing/web-platform/tests/workers/semantics/multiple-workers/001.html
@@ -0,0 +1,23 @@
+<!doctype html>
+<title>dedicated and shared worker in same page</title>
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<div id=log></div>
+<script>
+async_test(function() {
+  var worker = new Worker('001.js');
+  worker.onmessage = this.step_func(function(e) {
+    assert_equals(e.data, 'dedicated');
+    this.done();
+  });
+  worker.postMessage('dedicated');
+}, 'dedicated');
+async_test(function() {
+  var shared = new SharedWorker('001.js', '');
+  shared.port.onmessage = this.step_func(function(e) {
+    assert_equals(e.data, 'shared');
+    this.done();
+  });
+  shared.port.postMessage('shared');
+}, 'shared');
+</script>
\ No newline at end of file
diff --git a/testing/web-platform/tests/workers/semantics/multiple-workers/001.js b/testing/web-platform/tests/workers/semantics/multiple-workers/001.js
new file mode 100644
index 0000000000..6d51169dea
--- /dev/null
+++ b/testing/web-platform/tests/workers/semantics/multiple-workers/001.js
@@ -0,0 +1,11 @@
+if ('onmessage' in self) { // dedicated worker
+  onmessage = function(e) {
+    postMessage(e.data);
+  }
+} else { // shared worker
+  onconnect = function(e) {
+    e.ports[0].onmessage = function(e) {
+      this.postMessage(e.data);
+    }
+  }
+}
\ No newline at end of file
diff --git a/testing/web-platform/tests/workers/semantics/multiple-workers/002.html b/testing/web-platform/tests/workers/semantics/multiple-workers/002.html
new file mode 100644
index 0000000000..aa01e361d8
--- /dev/null
+++ b/testing/web-platform/tests/workers/semantics/multiple-workers/002.html
@@ -0,0 +1,21 @@
+<!doctype html>
+<title>creating 3 sibling dedicated workers</title>
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<div id=log></div>
+<script>
+async_test(function(t) {
+  var w1 = new Worker('002.js');
+  var w2 = new Worker('002.js');
+  var w3 = new Worker('002.js');
+  var got = [false, false, false];
+  var check_done = t.step_func(function() {
+                       if (got.every(function(x) {return x})) {
+                           t.done();
+                       }
+                   });
+  w1.onmessage = t.step_func(function(e) {got[0] = true; check_done()});
+  w2.onmessage = t.step_func(function(e) {got[1] = true; check_done()});
+  w3.onmessage = t.step_func(function(e) {got[2] = true; check_done()});
+});
+</script>
\ No newline at end of file
diff --git a/testing/web-platform/tests/workers/semantics/multiple-workers/002.js b/testing/web-platform/tests/workers/semantics/multiple-workers/002.js
new file mode 100644
index 0000000000..2318c2e267
--- /dev/null
+++ b/testing/web-platform/tests/workers/semantics/multiple-workers/002.js
@@ -0,0 +1 @@
+postMessage(1);
\ No newline at end of file
diff --git a/testing/web-platform/tests/workers/semantics/multiple-workers/003.html b/testing/web-platform/tests/workers/semantics/multiple-workers/003.html
new file mode 100644
index 0000000000..f6e03c75f7
--- /dev/null
+++ b/testing/web-platform/tests/workers/semantics/multiple-workers/003.html
@@ -0,0 +1,16 @@
+<!doctype html>
+<title>creating 3 nested dedicated workers</title>
+<meta name="timeout" content="long">
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<div id=log></div>
+<script>
+async_test(function() {
+  var w1 = new Worker('003.js#1');
+  w1.onmessage = this.step_func(function(e) {
+    assert_equals(e.data, '123');
+    this.done();
+  });
+  w1.onerror = this.unreached_func("error");
+});
+</script>
diff --git a/testing/web-platform/tests/workers/semantics/multiple-workers/003.js b/testing/web-platform/tests/workers/semantics/multiple-workers/003.js
new file mode 100644
index 0000000000..14a5a614b3
--- /dev/null
+++ b/testing/web-platform/tests/workers/semantics/multiple-workers/003.js
@@ -0,0 +1,13 @@
+if (location.hash == '#1') {
+  var w2 = new Worker('003.js#2');
+  w2.onmessage = function(e) {
+    postMessage('1'+e.data);
+  }
+} else if (location.hash == '#2') {
+  var w3 = new Worker('003.js#3');
+  w3.onmessage = function(e) {
+    postMessage('2'+e.data);
+  }
+} else {
+  postMessage('3');
+}
diff --git a/testing/web-platform/tests/workers/semantics/multiple-workers/004-1.html b/testing/web-platform/tests/workers/semantics/multiple-workers/004-1.html
new file mode 100644
index 0000000000..eac038c5be
--- /dev/null
+++ b/testing/web-platform/tests/workers/semantics/multiple-workers/004-1.html
@@ -0,0 +1,7 @@
+<!doctype html>
+<title></title>
+<script>
+window.onload = function() {
+  var w=new SharedWorker('004-2.js', 'x');
+};
+</script>
diff --git a/testing/web-platform/tests/workers/semantics/multiple-workers/004-2.js b/testing/web-platform/tests/workers/semantics/multiple-workers/004-2.js
new file mode 100644
index 0000000000..e59cd6927e
--- /dev/null
+++ b/testing/web-platform/tests/workers/semantics/multiple-workers/004-2.js
@@ -0,0 +1,6 @@
+var port;
+onconnect = function(e) {
+  if (!port)
+    port = e.ports[0];
+  port.postMessage(1);
+}
\ No newline at end of file
diff --git a/testing/web-platform/tests/workers/semantics/multiple-workers/004.html b/testing/web-platform/tests/workers/semantics/multiple-workers/004.html
new file mode 100644
index 0000000000..552cc8a633
--- /dev/null
+++ b/testing/web-platform/tests/workers/semantics/multiple-workers/004.html
@@ -0,0 +1,37 @@
+<!doctype html>
+<title>shared worker with multiple documents</title>
+<meta name="timeout" content="long">
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<div id=log></div>
+<script>
+setup({ single_test: true });
+
+var i = 0;
+var load_count = 0;
+
+var w1 = new SharedWorker('004-2.js', 'x');
+w1.port.onmessage = function(e) {
+  i++;
+  check_result();
+};
+
+
+function iframe_loaded() {
+  load_count++;
+  check_result();
+}
+
+function check_result() {
+  //timeout to allow for extra, unexpected, messages to arrive
+  if (i == 3 && load_count == 2) {
+    setTimeout(function() {
+      assert_equals(load_count, 2);
+      assert_equals(i, 3);
+      done();
+    }, 500);
+  }
+}
+</script>
+<iframe src=004-1.html onload="iframe_loaded()"></iframe>
+<iframe src=004-1.html onload="iframe_loaded()"></iframe>
diff --git a/testing/web-platform/tests/workers/semantics/multiple-workers/008-1.html b/testing/web-platform/tests/workers/semantics/multiple-workers/008-1.html
new file mode 100644
index 0000000000..d19d7fa336
--- /dev/null
+++ b/testing/web-platform/tests/workers/semantics/multiple-workers/008-1.html
@@ -0,0 +1,8 @@
+<!doctype html>
+<title>008-1</title>
+<script>
+var w1 = new SharedWorker('008.js');
+w1.port.onmessage = function(e) {
+  e.ports[0].postMessage(2);
+}
+</script>
\ No newline at end of file
diff --git a/testing/web-platform/tests/workers/semantics/multiple-workers/008.html b/testing/web-platform/tests/workers/semantics/multiple-workers/008.html
new file mode 100644
index 0000000000..ee38d80866
--- /dev/null
+++ b/testing/web-platform/tests/workers/semantics/multiple-workers/008.html
@@ -0,0 +1,19 @@
+<!doctype html>
+<title>messagechannel in shared worker</title>
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<div id=log></div>
+<iframe src=008-1.html></iframe>
+<script>
+var t = async_test();
+onload = t.step_func(function() {
+  var w1 = new SharedWorker('008.js');
+  w1.port.onmessage = this.step_func(function(e) {
+    e.ports[0].onmessage = this.step_func(function(e) {
+      assert_equals(e.data, 2);
+      this.done();
+    });
+  });
+  w1.onerror = this.unreached_func("error");
+});
+</script>
\ No newline at end of file
diff --git a/testing/web-platform/tests/workers/semantics/multiple-workers/008.js b/testing/web-platform/tests/workers/semantics/multiple-workers/008.js
new file mode 100644
index 0000000000..92593ebb86
--- /dev/null
+++ b/testing/web-platform/tests/workers/semantics/multiple-workers/008.js
@@ -0,0 +1,6 @@
+var channel = new MessageChannel();
+var i = 0;
+onconnect = function(e) {
+  i++;
+  e.ports[0].postMessage(1, [channel['port' + i]]);
+}
\ No newline at end of file
diff --git a/testing/web-platform/tests/workers/semantics/multiple-workers/exposure.any.js b/testing/web-platform/tests/workers/semantics/multiple-workers/exposure.any.js
new file mode 100644
index 0000000000..7e226a7333
--- /dev/null
+++ b/testing/web-platform/tests/workers/semantics/multiple-workers/exposure.any.js
@@ -0,0 +1,11 @@
+// META: global=window,worker
+
+test(() => {
+  const assert = "ServiceWorkerGlobalScope" in globalThis ? assert_equals : assert_not_equals;
+  assert(globalThis.Worker, undefined);
+}, "Worker exposure");
+
+test(() => {
+  const assert = globalThis.GLOBAL.isWindow() ? assert_not_equals : assert_equals;
+  assert(globalThis.SharedWorker, undefined);
+}, "SharedWorker exposure");
diff --git a/testing/web-platform/tests/workers/semantics/navigation/001-1.html b/testing/web-platform/tests/workers/semantics/navigation/001-1.html
new file mode 100644
index 0000000000..c259c2c839
--- /dev/null
+++ b/testing/web-platform/tests/workers/semantics/navigation/001-1.html
@@ -0,0 +1,15 @@
+<!doctype html>
+<title>001-1</title>
+<script>
+onload = function() {
+  var worker = new Worker('001-1.js');
+  worker.onmessage = function(e) {
+    var started = !!parent.date;
+    parent.date = e.data;
+    if (!started) {
+      parent.start_test()
+    }
+  }
+}
+</script>
+<a href='data:text/html,<title>foo</title><script>onload=function(){window.parent.postMessage({title: window.document.title}, "*")}</script>'>link</a>
\ No newline at end of file
diff --git a/testing/web-platform/tests/workers/semantics/navigation/001-1.js b/testing/web-platform/tests/workers/semantics/navigation/001-1.js
new file mode 100644
index 0000000000..f62c365e32
--- /dev/null
+++ b/testing/web-platform/tests/workers/semantics/navigation/001-1.js
@@ -0,0 +1 @@
+setInterval(function() { postMessage(new Date()) }, 10)
\ No newline at end of file
diff --git a/testing/web-platform/tests/workers/semantics/navigation/001.html b/testing/web-platform/tests/workers/semantics/navigation/001.html
new file mode 100644
index 0000000000..f31c2590e5
--- /dev/null
+++ b/testing/web-platform/tests/workers/semantics/navigation/001.html
@@ -0,0 +1,39 @@
+<!--
+
+/*
+-->
+<!doctype html>
+<title>navigating</title>
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<div id=log></div>
+<script>
+setup({ single_test: true });
+var date;
+var newDate;
+</script>
+<iframe></iframe>
+<script>
+var iframe = document.querySelector('iframe');
+onload = function() {
+  iframe.src = "001-1.html?" + Math.random();
+};
+var start_test = function() {
+  window[0].document.links[0].click();
+};
+var after_load = function(event) {
+  history.back();
+  newDate = new Date();
+  setTimeout(function() {
+    assert_greater_than(Number(date), Number(newDate));
+    assert_equals(window[0].document.title, '001-1');
+    window.removeEventListener("message", after_load);
+    done();
+  }, 2000);
+};
+window.addEventListener("message", after_load);
+</script>
+<!--
+*/
+//-->
+
diff --git a/testing/web-platform/tests/workers/semantics/navigation/002.html b/testing/web-platform/tests/workers/semantics/navigation/002.html
new file mode 100644
index 0000000000..8ea98ef2d4
--- /dev/null
+++ b/testing/web-platform/tests/workers/semantics/navigation/002.html
@@ -0,0 +1,38 @@
+<!--
+
+/*
+-->
+<!doctype html>
+<title>navigating 2</title>
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<div id=log></div>
+<script>
+var date;
+var newDate;
+</script>
+<iframe></iframe>
+<script>
+var t = async_test();
+var iframe = document.querySelector('iframe');
+onload = t.step_func(function() {
+  iframe.src = "001-1.html?" + Math.random();
+});
+var start_test = t.step_func(function() {
+  window[0].document.links[0].click();
+});
+var after_load = t.step_func(function(event) {
+  newDate = new Date();
+  setTimeout(this.step_func(function() {
+    assert_less_than(Number(date), Number(newDate));
+    assert_equals(event.data.title, 'foo');
+    window.removeEventListener("message", after_load);
+    this.done();
+  }), 500);
+});
+window.addEventListener("message", after_load);
+</script>
+<!--
+*/
+//-->
+
diff --git a/testing/web-platform/tests/workers/semantics/reporting-errors/001.html b/testing/web-platform/tests/workers/semantics/reporting-errors/001.html
new file mode 100644
index 0000000000..d8b17289fe
--- /dev/null
+++ b/testing/web-platform/tests/workers/semantics/reporting-errors/001.html
@@ -0,0 +1,17 @@
+<!doctype html>
+<title>shared worker, not handled</title>
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<div id=log></div>
+<script>
+setup({allow_uncaught_exception:true});
+async_test(function() {
+  window.onerror = this.step_func(function(a) {
+    assert_unreached('window.onerror invoked: ' + a);
+  });
+  var worker = new SharedWorker('001.js', '');
+  worker.port.onmessage = this.step_func_done(function(e) {
+    assert_equals(e.data, '');
+  });
+});
+</script>
diff --git a/testing/web-platform/tests/workers/semantics/reporting-errors/001.js b/testing/web-platform/tests/workers/semantics/reporting-errors/001.js
new file mode 100644
index 0000000000..5736666cc3
--- /dev/null
+++ b/testing/web-platform/tests/workers/semantics/reporting-errors/001.js
@@ -0,0 +1,28 @@
+var port;
+var timeout;
+onerror = function(a,b,c,d,e) {
+  // will return undefined, thus the error is "not handled"
+  // so error should be reported to the user, but this test doesn't check
+  // that.
+  // just make sure that this method is invoked with five arguments
+  clearTimeout(timeout);
+  var log = '';
+  if (arguments.length != 5)
+    log += 'got ' + arguments.length + ' arguments, expected 5. ';
+  if (typeof a != 'string')
+    log += 'first argument wasn\'t a string. ';
+  if (b != location.href)
+    log += 'second argument was ' + b + ', expected ' + location.href + '. ';
+  if (typeof c != 'number')
+    log += 'third argument wasn\'t a number. ';
+  if (typeof d != 'number')
+    log += 'fourth argument wasn\'t a number. ';
+  if (e != 42)
+    log += 'fifth argument wasn\'t the thrown exception. ';
+  port.postMessage(log);
+}
+onconnect = function (e) {
+  port = e.ports[0];
+  timeout = setTimeout(function() { port.postMessage('self.onerror was not invoked'); }, 250);
+  throw 42; // will "report the error"
+}
diff --git a/testing/web-platform/tests/workers/semantics/reporting-errors/002.html b/testing/web-platform/tests/workers/semantics/reporting-errors/002.html
new file mode 100644
index 0000000000..4b322a5f07
--- /dev/null
+++ b/testing/web-platform/tests/workers/semantics/reporting-errors/002.html
@@ -0,0 +1,17 @@
+<!doctype html>
+<title>shared worker, addEventListener</title>
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<div id=log></div>
+<script>
+setup({allow_uncaught_exception:true});
+async_test(function() {
+  window.onerror = this.step_func(function(a) {
+    assert_unreached('window.onerror invoked: ' + a);
+  });
+  var worker = new SharedWorker('002.js', '');
+  worker.port.onmessage = this.step_func_done(function(e) {
+    assert_equals(e.data, '');
+  });
+});
+</script>
diff --git a/testing/web-platform/tests/workers/semantics/reporting-errors/002.js b/testing/web-platform/tests/workers/semantics/reporting-errors/002.js
new file mode 100644
index 0000000000..ff96922634
--- /dev/null
+++ b/testing/web-platform/tests/workers/semantics/reporting-errors/002.js
@@ -0,0 +1,34 @@
+var port;
+var timeout;
+addEventListener('error', function(e) {
+  // event is not canceled, thus the error is "not handled"
+  // so error should be reported to the user, but this test doesn't check
+  // that.
+  // just make sure that this event has the right properties
+  clearTimeout(timeout);
+  var log = '';
+  if (!self.ErrorEvent || Object.getPrototypeOf(e) != ErrorEvent.prototype)
+    log += 'event should be an ErrorEvent. ';
+  if (e.bubbles)
+    log += 'event should not bubble. ';
+  if (!e.cancelable)
+    log += 'event should be cancelable. ';
+  if (!e.isTrusted)
+    log += 'event should be trusted. ';
+  if (typeof e.message != 'string')
+    log += 'message wasn\'t a string. ';
+  if (e.filename != location.href)
+    log += 'filename was ' + e.filename + ', expected ' + location.href + '. ';
+  if (typeof e.lineno != 'number')
+    log += 'lineno wasn\'t a number. ';
+  if (typeof e.colno != 'number')
+    log += 'colno argument wasn\'t a number. ';
+  if (e.error != 42)
+    log += 'fifth argument wasn\'t the thrown exception. ';
+  port.postMessage(log);
+}, false);
+onconnect = function (e) {
+  port = e.ports[0];
+  timeout = setTimeout(function() { port.postMessage('No error event fired'); }, 250);
+  throw 42; // will "report the error"
+}
diff --git a/testing/web-platform/tests/workers/semantics/reporting-errors/003.html b/testing/web-platform/tests/workers/semantics/reporting-errors/003.html
new file mode 100644
index 0000000000..8ea59b8106
--- /dev/null
+++ b/testing/web-platform/tests/workers/semantics/reporting-errors/003.html
@@ -0,0 +1,23 @@
+<!doctype html>
+<title>shared worker, no error event on worker or port</title>
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<div id=log></div>
+<script>
+setup({allow_uncaught_exception:true});
+async_test(function() {
+  window.onerror = this.step_func(function(a) {
+    assert_unreached('window.onerror invoked: ' + a);
+  });
+  var worker = new SharedWorker('003.js', '');
+  worker.addEventListener('error', this.step_func(function(e) {
+    assert_unreached('error on worker');
+  }), false);
+  worker.port.addEventListener('error', this.step_func(function(e) {
+    assert_unreached('error on port');
+  }), false);
+  worker.port.onmessage = this.step_func_done(function(e) {
+    assert_equals(e.data, '');
+  });
+});
+</script>
diff --git a/testing/web-platform/tests/workers/semantics/reporting-errors/003.js b/testing/web-platform/tests/workers/semantics/reporting-errors/003.js
new file mode 100644
index 0000000000..8a3390bb24
--- /dev/null
+++ b/testing/web-platform/tests/workers/semantics/reporting-errors/003.js
@@ -0,0 +1,8 @@
+onconnect = function (e) {
+  setTimeout(function() { e.ports[0].postMessage(''); }, 250);
+  y(); // will "report the error"
+  // onerror is null so it'll be "not handled", and the error should be
+  // reported to the user, although we don't test that here
+  // make sure we don't fire an error event on the message port or the
+  // SharedWorker object
+}
diff --git a/testing/web-platform/tests/workers/semantics/reporting-errors/004-1.html b/testing/web-platform/tests/workers/semantics/reporting-errors/004-1.html
new file mode 100644
index 0000000000..326e1399ec
--- /dev/null
+++ b/testing/web-platform/tests/workers/semantics/reporting-errors/004-1.html
@@ -0,0 +1,18 @@
+<!doctype html>
+<script>
+parent.t.step(function() {
+  window.onerror = this.step_func(function(a) {
+    assert_unreached('(inner) window.onerror invoked: ' + a);
+  });
+  var worker = new SharedWorker('004.js', '');
+  worker.addEventListener('error', this.step_func(function(e) {
+    parent.assert_unreached('(inner) error on worker');
+  }), false);
+  worker.port.addEventListener('error', this.step_func(function(e) {
+    parent.assert_unreached('(inner) error on port');
+  }), false);
+  worker.port.onmessage = this.step_func_done(function(e) {
+    parent.assert_equals(e.data, 2);
+  });
+});
+</script>
diff --git a/testing/web-platform/tests/workers/semantics/reporting-errors/004.html b/testing/web-platform/tests/workers/semantics/reporting-errors/004.html
new file mode 100644
index 0000000000..8516e52c6f
--- /dev/null
+++ b/testing/web-platform/tests/workers/semantics/reporting-errors/004.html
@@ -0,0 +1,26 @@
+<!doctype html>
+<title>shared worker in two documents and window.onerror</title>
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<div id=log></div>
+<script>
+setup({allow_uncaught_exception:true});
+var t = async_test(function() {
+  window.onerror = this.step_func(function(a) {
+    assert_unreached('(outer) window.onerror invoked: ' + a);
+  });
+  var worker = new SharedWorker('004.js', '');
+  worker.addEventListener('error', this.step_func(function(e) {
+    assert_unreached('(outer) error on worker');
+  }), false);
+  worker.port.addEventListener('error', this.step_func(function(e) {
+    assert_unreached('(outer) error on port');
+  }), false);
+  worker.port.onmessage = this.step_func(function(e) {
+    assert_equals(e.data, 1);
+    var iframe = document.createElement('iframe');
+    iframe.src = '004-1.html';
+    document.body.appendChild(iframe);
+  });
+});
+</script>
diff --git a/testing/web-platform/tests/workers/semantics/reporting-errors/004.js b/testing/web-platform/tests/workers/semantics/reporting-errors/004.js
new file mode 100644
index 0000000000..a68d2ab01d
--- /dev/null
+++ b/testing/web-platform/tests/workers/semantics/reporting-errors/004.js
@@ -0,0 +1,6 @@
+var i = 0;
+onconnect = function (e) {
+  i++;
+  setTimeout(function() { e.ports[0].postMessage(i); }, 250);
+  y(); // will "report the error"
+}
diff --git a/testing/web-platform/tests/workers/semantics/run-a-worker/001.html b/testing/web-platform/tests/workers/semantics/run-a-worker/001.html
new file mode 100644
index 0000000000..71e48c2771
--- /dev/null
+++ b/testing/web-platform/tests/workers/semantics/run-a-worker/001.html
@@ -0,0 +1,14 @@
+<!doctype html>
+<title>worker global scope, dedicated worker</title>
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<div id=log></div>
+<script>
+async_test(function() {
+  var worker = new Worker('001.js');
+  worker.onmessage = this.step_func(function(e) {
+    assert_true(e.data);
+    this.done();
+  });
+});
+</script>
\ No newline at end of file
diff --git a/testing/web-platform/tests/workers/semantics/run-a-worker/001.js b/testing/web-platform/tests/workers/semantics/run-a-worker/001.js
new file mode 100644
index 0000000000..33ed47f1b4
--- /dev/null
+++ b/testing/web-platform/tests/workers/semantics/run-a-worker/001.js
@@ -0,0 +1 @@
+postMessage(this === self);
\ No newline at end of file
diff --git a/testing/web-platform/tests/workers/semantics/run-a-worker/002.html b/testing/web-platform/tests/workers/semantics/run-a-worker/002.html
new file mode 100644
index 0000000000..9487d886a6
--- /dev/null
+++ b/testing/web-platform/tests/workers/semantics/run-a-worker/002.html
@@ -0,0 +1,14 @@
+<!doctype html>
+<title>worker global scope, shared worker</title>
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<div id=log></div>
+<script>
+async_test(function() {
+  var worker = new SharedWorker('002.js');
+  worker.port.onmessage = this.step_func(function(e) {
+    assert_true(e.data);
+    this.done();
+  });
+});
+</script>
\ No newline at end of file
diff --git a/testing/web-platform/tests/workers/semantics/run-a-worker/002.js b/testing/web-platform/tests/workers/semantics/run-a-worker/002.js
new file mode 100644
index 0000000000..627272aaef
--- /dev/null
+++ b/testing/web-platform/tests/workers/semantics/run-a-worker/002.js
@@ -0,0 +1,4 @@
+var passed = this === self;
+onconnect = function(e) {
+  e.ports[0].postMessage(passed);
+}
\ No newline at end of file
diff --git a/testing/web-platform/tests/workers/semantics/run-a-worker/003.html b/testing/web-platform/tests/workers/semantics/run-a-worker/003.html
new file mode 100644
index 0000000000..e96c176f20
--- /dev/null
+++ b/testing/web-platform/tests/workers/semantics/run-a-worker/003.html
@@ -0,0 +1,15 @@
+<!doctype html>
+<title>handling for 404 response</title>
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<script>
+async_test(t => {
+  const worker = new Worker('404_worker');
+  worker.onerror = e => t.done();
+}, 'worker');
+
+async_test(t => {
+  const shared = new SharedWorker('404_shared');
+  shared.onerror = e => t.done();
+}, 'shared');
+</script>
diff --git a/testing/web-platform/tests/workers/semantics/structured-clone/dedicated.html b/testing/web-platform/tests/workers/semantics/structured-clone/dedicated.html
new file mode 100644
index 0000000000..16b6be56f1
--- /dev/null
+++ b/testing/web-platform/tests/workers/semantics/structured-clone/dedicated.html
@@ -0,0 +1,33 @@
+<!doctype html>
+<title>structured clone to dedicated worker</title>
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<script src=/common/sab.js></script>
+<script src=/html/webappapis/structured-clone/structured-clone-battery-of-tests.js></script>
+<script src=/html/webappapis/structured-clone/structured-clone-battery-of-tests-with-transferables.js></script>
+<script src=/html/webappapis/structured-clone/structured-clone-battery-of-tests-harness.js></script>
+<div id=log></div>
+<script>
+  runStructuredCloneBatteryOfTests({
+    setup() {
+      const blob = new Blob([`
+        onmessage = ev => postMessage(ev.data, ev.data.transfer);
+      `], {type: 'text/javascript'});
+      this.blobURL = URL.createObjectURL(blob);
+      this.worker = new Worker(this.blobURL);
+    },
+    structuredClone(data, transfer) {
+      return new Promise(resolve => {
+        this.worker.addEventListener('message', function f(ev) {
+          this.worker.removeEventListener('message', f);
+          resolve(ev.data.data);
+        }.bind(this));
+        this.worker.postMessage({data, transfer}, transfer);
+      });
+    },
+    teardown() {
+      this.worker.terminate();
+      URL.revokeObjectURL(this.blobURL);
+    }
+  });
+</script>
diff --git a/testing/web-platform/tests/workers/semantics/structured-clone/shared.html b/testing/web-platform/tests/workers/semantics/structured-clone/shared.html
new file mode 100644
index 0000000000..eb85499fe2
--- /dev/null
+++ b/testing/web-platform/tests/workers/semantics/structured-clone/shared.html
@@ -0,0 +1,37 @@
+<!doctype html>
+<title>structured clone to shared worker</title>
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<script src=/common/sab.js></script>
+<script src=/html/webappapis/structured-clone/structured-clone-battery-of-tests.js></script>
+<script src=/html/webappapis/structured-clone/structured-clone-battery-of-tests-with-transferables.js></script>
+<script src=/html/webappapis/structured-clone/structured-clone-battery-of-tests-harness.js></script>
+<div id=log></div>
+<script>
+  runStructuredCloneBatteryOfTests({
+    setup() {
+      const blob = new Blob([`
+        onconnect = ev => {
+          const port = ev.ports[0];
+          port.onmessage = ev => port.postMessage(ev.data, ev.data.transfer);
+        };
+      `], {type: 'text/javascript'});
+      this.blobURL = URL.createObjectURL(blob);
+      this.worker = new SharedWorker(this.blobURL);
+      this.port = this.worker.port;
+    },
+    structuredClone(data, transfer) {
+      return new Promise(resolve => {
+        this.port.addEventListener('message', function f(ev) {
+          this.port.removeEventListener('message', f);
+          resolve(ev.data.data);
+        }.bind(this));
+        this.port.start();
+        this.port.postMessage({data, transfer}, transfer);
+      });
+    },
+    teardown() {
+      URL.revokeObjectURL(this.blobURL);
+    }
+  });
+</script>
diff --git a/testing/web-platform/tests/workers/semantics/xhr/001-1.xml b/testing/web-platform/tests/workers/semantics/xhr/001-1.xml
new file mode 100644
index 0000000000..5d735bdf61
--- /dev/null
+++ b/testing/web-platform/tests/workers/semantics/xhr/001-1.xml
@@ -0,0 +1 @@
+<x>foo</x>
\ No newline at end of file
diff --git a/testing/web-platform/tests/workers/semantics/xhr/001.html b/testing/web-platform/tests/workers/semantics/xhr/001.html
new file mode 100644
index 0000000000..da59f5ac2d
--- /dev/null
+++ b/testing/web-platform/tests/workers/semantics/xhr/001.html
@@ -0,0 +1,16 @@
+<!doctype html>
+<title>async XMLHttpRequest in dedicated worker</title>
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<div id=log></div>
+<script>
+var t = async_test();
+function runtest() {
+  var worker = new Worker('001.js');
+  worker.onmessage = this.step_func(function(e) {
+    assert_equals(e.data, '');
+    this.done();
+  });
+}
+</script>
+<iframe src=001-1.xml onload="t.step(runtest);"></iframe>
\ No newline at end of file
diff --git a/testing/web-platform/tests/workers/semantics/xhr/001.js b/testing/web-platform/tests/workers/semantics/xhr/001.js
new file mode 100644
index 0000000000..1cbe98ba47
--- /dev/null
+++ b/testing/web-platform/tests/workers/semantics/xhr/001.js
@@ -0,0 +1,13 @@
+var xhr = new XMLHttpRequest();
+var log = '';
+xhr.onreadystatechange = function(e) {
+  if (this.readyState == 4) {
+    if (this.responseXML != null)
+      log += 'responseXML was not null. ';
+    if (this.responseText != '<x>foo</x>')
+      log += 'responseText was ' + this.responseText + ', expected <x>foo</x>. ';
+    postMessage(log);
+  }
+}
+xhr.open('GET', '001-1.xml', true);
+xhr.send();
\ No newline at end of file
diff --git a/testing/web-platform/tests/workers/semantics/xhr/002.html b/testing/web-platform/tests/workers/semantics/xhr/002.html
new file mode 100644
index 0000000000..60c0e161cc
--- /dev/null
+++ b/testing/web-platform/tests/workers/semantics/xhr/002.html
@@ -0,0 +1,16 @@
+<!doctype html>
+<title>sync XMLHttpRequest in dedicated worker</title>
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<div id=log></div>
+<script>
+var t = async_test();
+function runtest() {
+  var worker = new Worker('002.js');
+  worker.onmessage = this.step_func(function(e) {
+    assert_equals(e.data, '');
+    this.done();
+  });
+}
+</script>
+<iframe src=001-1.xml onload="t.step(runtest);"></iframe>
\ No newline at end of file
diff --git a/testing/web-platform/tests/workers/semantics/xhr/002.js b/testing/web-platform/tests/workers/semantics/xhr/002.js
new file mode 100644
index 0000000000..68d7e91d45
--- /dev/null
+++ b/testing/web-platform/tests/workers/semantics/xhr/002.js
@@ -0,0 +1,9 @@
+var xhr = new XMLHttpRequest();
+var log = '';
+xhr.open('GET', '001-1.xml', false);
+xhr.send();
+if (xhr.responseXML != null)
+  log += 'responseXML was not null. ';
+if (xhr.responseText != '<x>foo</x>')
+  log += 'responseText was ' + this.responseText + ', expected <x>foo</x>. ';
+postMessage(log);
\ No newline at end of file
diff --git a/testing/web-platform/tests/workers/semantics/xhr/003.html b/testing/web-platform/tests/workers/semantics/xhr/003.html
new file mode 100644
index 0000000000..e3ce36b82c
--- /dev/null
+++ b/testing/web-platform/tests/workers/semantics/xhr/003.html
@@ -0,0 +1,16 @@
+<!doctype html>
+<title>async XMLHttpRequest in shared worker</title>
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<div id=log></div>
+<script>
+var t = async_test();
+function runtest() {
+  var worker = new SharedWorker('003.js', '');
+  worker.port.onmessage = this.step_func(function(e) {
+    assert_equals(e.data, '');
+    this.done();
+  });
+}
+</script>
+<iframe src=001-1.xml onload="t.step(runtest);"></iframe>
diff --git a/testing/web-platform/tests/workers/semantics/xhr/003.js b/testing/web-platform/tests/workers/semantics/xhr/003.js
new file mode 100644
index 0000000000..1a9c5a7ee8
--- /dev/null
+++ b/testing/web-platform/tests/workers/semantics/xhr/003.js
@@ -0,0 +1,17 @@
+onconnect = function(e) {
+  var xhr = new XMLHttpRequest();
+  var log = '';
+  var port = e.ports[0];
+  var postMessage = port.postMessage;
+  xhr.onreadystatechange = function(e) {
+    if (this.readyState == 4) {
+      if (this.responseXML != null)
+        log += 'responseXML was not null. ';
+      if (this.responseText && this.responseText != '<x>foo</x>')
+        log += 'responseText was ' + this.responseText + ', expected <x>foo</x>. ';
+      postMessage.call(port, log);
+    }
+  }
+  xhr.open('GET', '001-1.xml', true);
+  xhr.send();
+}
diff --git a/testing/web-platform/tests/workers/semantics/xhr/004.html b/testing/web-platform/tests/workers/semantics/xhr/004.html
new file mode 100644
index 0000000000..d11e3dbc1b
--- /dev/null
+++ b/testing/web-platform/tests/workers/semantics/xhr/004.html
@@ -0,0 +1,16 @@
+<!doctype html>
+<title>sync XMLHttpRequest in shared worker</title>
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<div id=log></div>
+<script>
+var t = async_test();
+function runtest() {
+  var worker = new SharedWorker('004.js', '');
+  worker.port.onmessage = this.step_func(function(e) {
+    assert_equals(e.data, '');
+    this.done();
+  });
+}
+</script>
+<iframe src=001-1.xml onload="t.step(runtest);"></iframe>
diff --git a/testing/web-platform/tests/workers/semantics/xhr/004.js b/testing/web-platform/tests/workers/semantics/xhr/004.js
new file mode 100644
index 0000000000..1741c8d36a
--- /dev/null
+++ b/testing/web-platform/tests/workers/semantics/xhr/004.js
@@ -0,0 +1,11 @@
+onconnect = function(e) {
+  var xhr = new XMLHttpRequest();
+  var log = '';
+  xhr.open('GET', '001-1.xml', false);
+  xhr.send();
+  if (xhr.responseXML != null)
+    log += 'responseXML was not null. ';
+  if (xhr.responseText != '<x>foo</x>')
+    log += 'responseText was ' + xhr.responseText + ', expected <x>foo</x>. ';
+  e.ports[0].postMessage(log);
+}
diff --git a/testing/web-platform/tests/workers/semantics/xhr/005.html b/testing/web-platform/tests/workers/semantics/xhr/005.html
new file mode 100644
index 0000000000..84abdb0c42
--- /dev/null
+++ b/testing/web-platform/tests/workers/semantics/xhr/005.html
@@ -0,0 +1,21 @@
+<!doctype html>
+<title>base url, dedicated worker</title>
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<div id=log></div>
+<script>
+var t = async_test();
+var i = 0;
+function runtest() {
+  i++;
+  if (i != 2)
+    return;
+  var worker = new Worker('support/005-1.js');
+  worker.onmessage = this.step_func(function(e) {
+    assert_true(e.data);
+    this.done();
+  });
+}
+</script>
+<iframe src=001-1.xml onload="t.step(runtest);"></iframe>
+<iframe src=support/001-1.xml onload="t.step(runtest);"></iframe>
diff --git a/testing/web-platform/tests/workers/semantics/xhr/006.html b/testing/web-platform/tests/workers/semantics/xhr/006.html
new file mode 100644
index 0000000000..7411b4baef
--- /dev/null
+++ b/testing/web-platform/tests/workers/semantics/xhr/006.html
@@ -0,0 +1,21 @@
+<!doctype html>
+<title>base url, shared worker</title>
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<div id=log></div>
+<script>
+var t = async_test();
+var i = 0;
+function runtest() {
+  i++;
+  if (i != 2)
+    return;
+  var worker = new SharedWorker('support/006-1.js','');
+  worker.port.onmessage = this.step_func(function(e) {
+    assert_true(e.data);
+    this.done();
+  });
+}
+</script>
+<iframe src=001-1.xml onload="t.step(runtest);"></iframe>
+<iframe src=support/001-1.xml onload="t.step(runtest);"></iframe>
diff --git a/testing/web-platform/tests/workers/semantics/xhr/support/001-1.xml b/testing/web-platform/tests/workers/semantics/xhr/support/001-1.xml
new file mode 100644
index 0000000000..ecea58a935
--- /dev/null
+++ b/testing/web-platform/tests/workers/semantics/xhr/support/001-1.xml
@@ -0,0 +1 @@
+<x>bar</x>
\ No newline at end of file
diff --git a/testing/web-platform/tests/workers/semantics/xhr/support/005-1.js b/testing/web-platform/tests/workers/semantics/xhr/support/005-1.js
new file mode 100644
index 0000000000..45f6519a21
--- /dev/null
+++ b/testing/web-platform/tests/workers/semantics/xhr/support/005-1.js
@@ -0,0 +1,5 @@
+var xhr = new XMLHttpRequest();
+xhr.open('GET', '001-1.xml', false);
+xhr.send();
+var passed = xhr.responseText == '<x>bar</x>';
+postMessage(passed);
\ No newline at end of file
diff --git a/testing/web-platform/tests/workers/semantics/xhr/support/006-1.js b/testing/web-platform/tests/workers/semantics/xhr/support/006-1.js
new file mode 100644
index 0000000000..d446781eb7
--- /dev/null
+++ b/testing/web-platform/tests/workers/semantics/xhr/support/006-1.js
@@ -0,0 +1,7 @@
+onconnect = function(e) {
+  var xhr = new XMLHttpRequest();
+  xhr.open('GET', '001-1.xml', false);
+  xhr.send();
+  var passed = xhr.responseText == '<x>bar</x>';
+  e.ports[0].postMessage(passed);
+}
\ No newline at end of file
-- 
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