chrome.bluetoothLowEnergy: Implement writeCharacteristicValue.

chrome/test/data/extensions/api_test/bluetooth_low_energy/write_characteristic_value/runtest.js

Index: chrome/test/data/extensions/api_test/bluetooth_low_energy/write_characteristic_value/runtest.js
diff --git a/chrome/test/data/extensions/api_test/bluetooth_low_energy/write_characteristic_value/runtest.js b/chrome/test/data/extensions/api_test/bluetooth_low_energy/write_characteristic_value/runtest.js
new file mode 100644
index 0000000000000000000000000000000000000000..017664c6fe8a1d23fb9f2d68dce249098db9790e
--- /dev/null
+++ b/chrome/test/data/extensions/api_test/bluetooth_low_energy/write_characteristic_value/runtest.js
@@ -0,0 +1,58 @@
+// Copyright 2014 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.
+
+function testWriteCharacteristicValue() {
+  chrome.test.assertTrue(characteristic != null, '\'characteristic\' is null');
+  chrome.test.assertEq(charId, characteristic.instanceId);
+
+  chrome.test.assertEq(writeValue.byteLength, characteristic.value.byteLength);
+
+  var receivedValueBytes = new Uint8Array(characteristic.value);
+  for (var i = 0; i < writeValue.byteLength; i++) {
+    chrome.test.assertEq(valueBytes[i], receivedValueBytes[i]);
+  }
+
+  chrome.test.succeed();
+}
+
+var writeCharacteristicValue =
+    chrome.bluetoothLowEnergy.writeCharacteristicValue;
+
+var charId = 'char_id0';
+var badCharId = 'char_id1';
+
+var characteristic = null;
+var bytes = [0x43, 0x68, 0x72, 0x6F, 0x6D, 0x65];
+var writeValue = new ArrayBuffer(bytes.length);
+var valueBytes = new Uint8Array(writeValue);
+valueBytes.set(bytes);
+
+// 1. Unknown characteristic instanceId.
+writeCharacteristicValue(badCharId, writeValue, function (result) {
+  if (result || !chrome.runtime.lastError) {
+    chrome.test.fail('badCharId did not cause failure');
+  }
+
+  // 2. Known characteristic instanceId, but call failure.
+  writeCharacteristicValue(charId, writeValue, function (result) {
+    if (result || !chrome.runtime.lastError) {
+      chrome.test.fail('writeCharacteristicValue should have failed');
+    }
+
+    // 3. Call should succeed.
+    writeCharacteristicValue(charId, writeValue, function (result) {
+      if (chrome.runtime.lastError) {
+        chrome.test.fail(chrome.runtime.lastError.message);
+      }
+
+      chrome.bluetoothLowEnergy.getCharacteristic(charId, function (result) {
+        characteristic = result;
+
+        chrome.test.sendMessage('ready', function (message) {
+          chrome.test.runTests([testWriteCharacteristicValue]);
+        });
+      });
+    });
+  });
+});