diff --git a/dev/integration_tests/web/lib/framework_stack_trace.dart b/dev/integration_tests/web/lib/framework_stack_trace.dart
index d68eb46416..cc32638807 100644
--- a/dev/integration_tests/web/lib/framework_stack_trace.dart
+++ b/dev/integration_tests/web/lib/framework_stack_trace.dart
@@ -35,14 +35,14 @@ Future<void> main() async {
     output.writeln('--- TEST FAILED ---');
   }
 
-  print(output);
-  web.window.fetch(
+  await web.window.fetch(
     '/test-result'.toJS,
     web.RequestInit(
       method: 'POST',
       body: '$output'.toJS,
     )
-  );
+  ).toDart;
+  print(output);
 }
 
 bool _errorMessageFormattedCorrectly(String errorMessage) {
diff --git a/dev/integration_tests/web/lib/sound_mode.dart b/dev/integration_tests/web/lib/sound_mode.dart
index ffd50f8558..77978666b1 100644
--- a/dev/integration_tests/web/lib/sound_mode.dart
+++ b/dev/integration_tests/web/lib/sound_mode.dart
@@ -9,7 +9,7 @@ import 'dart:js_interop';
 import 'package:web/web.dart' as web;
 
 // Verify that web applications can be run in sound mode.
-void main() {
+void main() async {
   const bool isWeak = <int?>[] is List<int>;
   String output;
   if (isWeak) {
@@ -17,12 +17,12 @@ void main() {
   } else {
     output = '--- TEST SUCCEEDED ---';
   }
-  print(output);
-  web.window.fetch(
+  await web.window.fetch(
     '/test-result'.toJS,
     web.RequestInit(
       method: 'POST',
       body: output.toJS,
     )
-  );
+  ).toDart;
+  print(output);
 }
diff --git a/dev/integration_tests/web/lib/stack_trace.dart b/dev/integration_tests/web/lib/stack_trace.dart
index a7eec7d4ac..e1428ecd4a 100644
--- a/dev/integration_tests/web/lib/stack_trace.dart
+++ b/dev/integration_tests/web/lib/stack_trace.dart
@@ -66,7 +66,7 @@ const List<StackFrame> expectedDebugStackFrames = <StackFrame>[
 /// Tests that we do not crash while parsing Web stack traces.
 ///
 /// This test is run in debug, profile, and release modes.
-void main() {
+void main() async {
   final StringBuffer output = StringBuffer();
   try {
     try {
@@ -97,14 +97,14 @@ void main() {
     output.writeln(unexpectedStackTrace);
     output.writeln('--- TEST FAILED ---');
   }
-  print(output);
-  web.window.fetch(
+  await web.window.fetch(
     '/test-result'.toJS,
     web.RequestInit(
       method: 'POST',
       body: '$output'.toJS,
     )
-  );
+  ).toDart;
+  print(output);
 }
 
 @noInline
diff --git a/dev/integration_tests/web/lib/web_define_loading.dart b/dev/integration_tests/web/lib/web_define_loading.dart
index 89c332f47f..39056d6000 100644
--- a/dev/integration_tests/web/lib/web_define_loading.dart
+++ b/dev/integration_tests/web/lib/web_define_loading.dart
@@ -12,17 +12,16 @@ Future<void> main() async {
     String.fromEnvironment('test.valueB');
   if (combined == 'Example,AValue') {
     output.write('--- TEST SUCCEEDED ---');
-    print('--- TEST SUCCEEDED ---');
   } else {
     output.write('--- TEST FAILED ---');
-    print('--- TEST FAILED ---');
   }
 
-  web.window.fetch(
+  await web.window.fetch(
     '/test-result'.toJS,
     web.RequestInit(
       method: 'POST',
       body: '$output'.toJS,
     )
-  );
+  ).toDart;
+  print(output);
 }
diff --git a/dev/integration_tests/web/lib/web_resources_cdn_test.dart b/dev/integration_tests/web/lib/web_resources_cdn_test.dart
index 23c5de73e6..ee3af8daa6 100644
--- a/dev/integration_tests/web/lib/web_resources_cdn_test.dart
+++ b/dev/integration_tests/web/lib/web_resources_cdn_test.dart
@@ -6,12 +6,19 @@ import 'dart:js_interop';
 
 import 'package:web/web.dart' as web;
 
-// Attempt to load CanvasKit resources hosted on gstatic.
 Future<void> main() async {
+  if (await testFetchResources()) {
+    print('--- TEST SUCCEEDED ---');
+  } else {
+    print('--- TEST FAILED ---');
+  }
+}
+
+// Attempt to load CanvasKit resources hosted on gstatic.
+Future<bool> testFetchResources() async {
   const String engineVersion = String.fromEnvironment('TEST_FLUTTER_ENGINE_VERSION');
   if (engineVersion.isEmpty) {
-    print('--- TEST FAILED ---');
-    return;
+    return false;
   }
   try {
     final web.Response response = await web.window.fetch(
@@ -20,14 +27,12 @@ Future<void> main() async {
         method: 'GET',
       ),
     ).toDart;
-    if (response.ok) {
-      print('--- TEST SUCCEEDED ---');
-    } else {
-      print('--- TEST FAILED ---');
+    if (!response.ok) {
+      return false;
     }
   } catch (err) {
     print(err);
-    print('--- TEST FAILED ---');
+    return false;
   }
   try {
     final web.Response response = await web.window.fetch(
@@ -36,13 +41,12 @@ Future<void> main() async {
         method: 'GET',
       )
     ).toDart;
-    if (response.ok) {
-      print('--- TEST SUCCEEDED ---');
-    } else {
-      print('--- TEST FAILED ---');
+    if (!response.ok) {
+      return false;
     }
   } catch (err) {
     print(err);
-    print('--- TEST FAILED ---');
+    return false;
   }
+  return true;
 }