1 files changed, 27 insertions, 3 deletions
diff --git a/testing/web-platform/tests/resources/chromium/fake-serial.js b/testing/web-platform/tests/resources/chromium/fake-serial.js
index 29c8168fb5..8614b4d64f 100644
--- a/testing/web-platform/tests/resources/chromium/fake-serial.js
+++ b/testing/web-platform/tests/resources/chromium/fake-serial.js
@@ -356,6 +356,10 @@ class FakeSerialService {
       portInfo.hasUsbProductId = true;
       portInfo.usbProductId = info.usbProductId;
     }
+    portInfo.connected = true;
+    if (info?.connected !== undefined) {
+      portInfo.connected = info.connected;
+    }
 
     let token = ++this.nextToken_;
     portInfo.token = {high: 0n, low: BigInt(token)};
@@ -366,8 +370,10 @@ class FakeSerialService {
     };
     this.ports_.set(token, record);
 
-    for (let client of this.clients_) {
-      client.onPortAdded(portInfo);
+    if (portInfo.connected) {
+      for (let client of this.clients_) {
+        client.onPortConnectedStateChanged(portInfo);
+      }
     }
 
     return token;
@@ -381,8 +387,26 @@ class FakeSerialService {
 
     this.ports_.delete(token);
 
+    record.portInfo.connected = false;
+    for (let client of this.clients_) {
+      client.onPortConnectedStateChanged(record.portInfo);
+    }
+  }
+
+  setPortConnectedState(token, connected) {
+    let record = this.ports_.get(token);
+    if (record === undefined) {
+      return;
+    }
+
+    let was_connected = record.portInfo.connected;
+    if (was_connected === connected) {
+      return;
+    }
+
+    record.portInfo.connected = connected;
     for (let client of this.clients_) {
-      client.onPortRemoved(record.portInfo);
+      client.onPortConnectedStateChanged(record.portInfo);
     }
   }