Introducing chrome.usb.getDevices/openDevice API

chrome/test/data/extensions/api_test/usb/device_handling/test.js

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 var usb = chrome.usb;
 
 var tests = [
+  function getDevices() {
+    usb.getDevices({vendorId: 0, productId: 0}, function(devices) {
+      console.log(devices);
+      usb.openDevice(devices[0], function(handle){
+        usb.closeDevice(handle);
+        chrome.test.succeed();
+      });
+    });
+  },
   function explicitCloseDevice() {
     usb.findDevices({vendorId: 0, productId: 0}, function(devices) {
       usb.closeDevice(devices[0]);
       chrome.test.succeed();
     });
-  },
-  function resetDevice() {
-    usb.findDevices({vendorId: 0, productId: 0}, function(devices) {
-      usb.resetDevice(devices[0], function(result) {
-        chrome.test.assertEq(result, true);
-        // Ensure the device is still open.
-        var transfer = {
-          direction: "out",
-          endpoint: 2,
-          data: new ArrayBuffer(1)
-        };
-        usb.interruptTransfer(devices[0], transfer, function(result) {
-          // This is designed to fail.
-          usb.resetDevice(devices[0], function(result) {
-            chrome.test.assertEq(result, false);
-            usb.interruptTransfer(devices[0], transfer, function(result) {
-              chrome.test.assertEq(result, undefined);
-              chrome.test.assertEq(
-                  chrome.runtime.lastError && chrome.runtime.lastError.message,
-                  'No such device.'
-              );
-              chrome.test.succeed();
-            });
-          });
-        });
-      });
-    });
-  },
+  }
 ];
 
 chrome.test.runTests(tests);