diff --git a/testing/web-platform/tests/fetch/range/sw.https.window.js b/testing/web-platform/tests/fetch/range/sw.https.window.js
index 625e513a8133a..76f80e9416c61 100644
--- a/testing/web-platform/tests/fetch/range/sw.https.window.js
+++ b/testing/web-platform/tests/fetch/range/sw.https.window.js
@@ -86,11 +86,11 @@ promise_test(async t => {
 
   // Fetching should reject
   const fetchPromise = w.fetch('?action=use-stored-ranged-response', { mode: 'no-cors' });
-  promise_rejects_js(t, TypeError, fetchPromise);
+  await promise_rejects_js(t, w.TypeError, fetchPromise);
 
   // Script loading should error too
   const loadScriptPromise = loadScript('?action=use-stored-ranged-response', { doc: w.document });
-  promise_rejects_js(t, Error, loadScriptPromise);
+  await promise_rejects_js(t, Error, loadScriptPromise);
 
   await loadScriptPromise.catch(() => {});
 
diff --git a/testing/web-platform/tests/service-workers/cache-storage/script-tests/cache-add.js b/testing/web-platform/tests/service-workers/cache-storage/script-tests/cache-add.js
index f1617109cfa13..62b44c7880168 100644
--- a/testing/web-platform/tests/service-workers/cache-storage/script-tests/cache-add.js
+++ b/testing/web-platform/tests/service-workers/cache-storage/script-tests/cache-add.js
@@ -1,8 +1,11 @@
 if (self.importScripts) {
     importScripts('/resources/testharness.js');
+    importScripts('/common/get-host-info.sub.js');
     importScripts('../resources/test-helpers.js');
 }
 
+const { REMOTE_HOST } = get_host_info();
+
 cache_test(function(cache, test) {
     return promise_rejects_js(
       test,
@@ -104,6 +107,21 @@ cache_test(function(cache, test) {
       'Cache.addAll should reject with TypeError if any request fails');
   }, 'Cache.addAll with 206 response');
 
+cache_test(function(cache, test) {
+    var urls = ['../resources/fetch-status.py?status=206',
+                '../resources/fetch-status.py?status=200'];
+    var requests = urls.map(function(url) {
+        var cross_origin_url = new URL(url, location.href);
+        cross_origin_url.hostname = REMOTE_HOST;
+        return new Request(cross_origin_url.href, { mode: 'no-cors' });
+      });
+    return promise_rejects_js(
+      test,
+      TypeError,
+      cache.addAll(requests),
+      'Cache.addAll should reject with TypeError if any request fails');
+  }, 'Cache.addAll with opaque-filtered 206 response');
+
 cache_test(function(cache, test) {
     return promise_rejects_js(
       test,
diff --git a/testing/web-platform/tests/service-workers/cache-storage/script-tests/cache-put.js b/testing/web-platform/tests/service-workers/cache-storage/script-tests/cache-put.js
index 44ba565d86ca0..b45910a3b8ba0 100644
--- a/testing/web-platform/tests/service-workers/cache-storage/script-tests/cache-put.js
+++ b/testing/web-platform/tests/service-workers/cache-storage/script-tests/cache-put.js
@@ -1,10 +1,12 @@
 if (self.importScripts) {
     importScripts('/resources/testharness.js');
+    importScripts('/common/get-host-info.sub.js');
     importScripts('../resources/test-helpers.js');
 }
 
 var test_url = 'https://example.com/foo';
 var test_body = 'Hello world!';
+const { REMOTE_HOST } = get_host_info();
 
 cache_test(function(cache) {
     var request = new Request(test_url);
@@ -129,6 +131,23 @@ cache_test(function(cache, test) {
         });
   }, 'Cache.put with HTTP 206 response');
 
+cache_test(function(cache, test) {
+    var test_url = new URL('../resources/fetch-status.py?status=206', location.href);
+    test_url.hostname = REMOTE_HOST;
+    var request = new Request(test_url.href, { mode: 'no-cors' });
+    var response;
+    return fetch(request)
+      .then(function(fetch_result) {
+          assert_equals(fetch_result.type, 'opaque',
+              'Test framework error: The response type should be opaque.');
+          assert_equals(fetch_result.status, 0,
+              'Test framework error: The status code should be 0 for an ' +
+              ' opaque-filtered response. This is actually HTTP 206.');
+          response = fetch_result.clone();
+          return promise_rejects_js(test, TypeError, cache.put(request, fetch_result));
+        });
+  }, 'Cache.put with opaque-filtered HTTP 206 response');
+
 cache_test(function(cache) {
     var test_url = new URL('../resources/fetch-status.py?status=500', location.href).href;
     var request = new Request(test_url);
diff --git a/testing/web-platform/tests/service-workers/cache-storage/window/cache-add.https.html b/testing/web-platform/tests/service-workers/cache-storage/window/cache-add.https.html
index 8dfb786cf3567..b5a64c6c369b5 100644
--- a/testing/web-platform/tests/service-workers/cache-storage/window/cache-add.https.html
+++ b/testing/web-platform/tests/service-workers/cache-storage/window/cache-add.https.html
@@ -4,5 +4,6 @@
 <meta name="timeout" content="long">
 <script src="/resources/testharness.js"></script>
 <script src="/resources/testharnessreport.js"></script>
+<script src="/common/get-host-info.sub.js"></script>
 <script src="../resources/test-helpers.js"></script>
 <script src="../script-tests/cache-add.js"></script>
diff --git a/testing/web-platform/tests/service-workers/cache-storage/window/cache-put.https.html b/testing/web-platform/tests/service-workers/cache-storage/window/cache-put.https.html
index 1ee14bdd124ee..9641c34705186 100644
--- a/testing/web-platform/tests/service-workers/cache-storage/window/cache-put.https.html
+++ b/testing/web-platform/tests/service-workers/cache-storage/window/cache-put.https.html
@@ -4,6 +4,7 @@
 <meta name="timeout" content="long">
 <script src="/resources/testharness.js"></script>
 <script src="/resources/testharnessreport.js"></script>
+<script src="/common/get-host-info.sub.js"></script>
 <script src="../resources/test-helpers.js"></script>
 <script src="../script-tests/cache-put.js"></script>
 <script>