bluetooth: Require frame to be connected for characteristic.readValue to succeed

third_party/WebKit/LayoutTests/bluetooth/script-tests/gatt-op-device-disconnects-before.js

+'use strict';
+promise_test(() => {
+  let val = new Uint8Array([1]);
+  return setBluetoothFakeAdapter('DisconnectingHealthThermometerAdapter')
+    .then(() => requestDeviceWithKeyDown({
+      filters: [{services: ['health_thermometer']}],
+      optionalServices: [request_disconnection_service_uuid]
+    }))
+    .then(device => device.gatt.connect())
+    .then(gattServer => {
+      let measurement_interval;
+      return gattServer.getPrimaryService('health_thermometer')
+        .then(ht=> ht.getCharacteristic('measurement_interval'))
+        .then(mi => measurement_interval = mi)
+        .then(() => gattServer.getPrimaryService(
+          request_disconnection_service_uuid))
+        .then(service => service.getCharacteristic(
+          request_disconnection_characteristic_uuid))
+        .then(requestDisconnection => requestDisconnection.writeValue(
+          new Uint8Array([0])))
+        .then(() => assert_promise_rejects_with_message(
+          measurement_interval.CALLS([readValue()]),

[Jeffrey Yasskin, 2016/10/21 22:40:14]

I don't think we should generate tests when doing it doesn't save lines of
human-written code. I'd like to generate all 6 of these tests from a single
template, but as you've said it's hard.

+          new DOMException(
+            'GATT Server is disconnected. Cannot perform GATT operations.',
+            'NetworkError')));
+    });
+}, 'Device disconnects before FUNCTION_NAME. Reject with NetworkError.');