Short-circuit failures in BLE js tests

Use chrome.test.sendMessage instead of chrome.test.fail so we
short-circuit instead of timeout on javascript failures where we're
waiting for a go signal.

BUG=388958
R=armansito@chromium.org

Review URL: https://codereview.chromium.org/593163002

Cr-Commit-Position: refs/heads/master@{#297292}

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

@@ -2,7 +2,13 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
+var error;
+
 function testCharacteristicProperties() {
+  if (error !== undefined) {
+    chrome.test.sendMessage('fail');
+    chrome.test.fail(error);
+  }
   chrome.test.assertEq(requestCount, characteristics.length);
 
   for (var i = 0; i < requestCount; i++) {
@@ -43,14 +49,21 @@ function compareProperties(a, b) {
 }
 
 function failOnError() {
+  if (error !== undefined)
+    return true;
+
   if (chrome.runtime.lastError) {
-    chrome.test.fail(chrome.runtime.lastError.message);
+    error = 'Unexpected error: ' + chrome.runtime.lastError.message;
+    chrome.test.runTests([testCharacteristicProperties]);
   }
+  return false;
 }
 
 for (var i = 0; i < requestCount; i++) {
   chrome.bluetoothLowEnergy.getCharacteristic(charId, function (result) {
-    failOnError();
+    if (failOnError())
+      return;
+
     characteristics.push(result);
 
     if (characteristics.length == requestCount) {

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

@@ -10,12 +10,14 @@ var errorInProgress = 'In progress';
 function expectError(message) {
   if (!chrome.runtime.lastError ||
       chrome.runtime.lastError.message != message)
-    chrome.test.fail('Expected error: ' + message);
+    chrome.test.sendMessage('Expected error: <' + message + '> got <'
+        + chrome.runtime.lastError.message + '>');
 }
 
 function expectSuccess() {
   if (chrome.runtime.lastError)
-    chrome.test.fail('Unexpected error: ' + chrome.runtime.lastError.message);
+    chrome.test.sendMessage('Unexpected error: '
+        + chrome.runtime.lastError.message);
 }
 
 ble.connect(deviceAddress0, function () {

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

@@ -2,7 +2,13 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
+var error;
+
 function testGetCharacteristic() {
+  if (error !== undefined) {
+    chrome.test.sendMessage('fail');
+    chrome.test.fail(error);
+  }
   chrome.test.assertTrue(characteristic != null,
                          'Characteristic is null.');
   chrome.test.assertEq('char_id0', characteristic.instanceId);
@@ -38,35 +44,41 @@ var badCharId = 'char_id1';
 
 var characteristic = null;
 
-// 1. Unknown characteristic instanceId.
-chrome.bluetoothLowEnergy.getCharacteristic(badCharId, function (result) {
+function expectFailed(result) {
   if (result || !chrome.runtime.lastError) {
-    chrome.test.fail('getCharacteristics should have failed');
+    error = 'getCharacteristic call should have failed';
+    chrome.test.runTests([testGetCharacteristic]);
+    return false;
   }
+  return true;
+}
+
+// 1. Unknown characteristic instanceId.
+chrome.bluetoothLowEnergy.getCharacteristic(badCharId, function (result) {
+  if (!expectFailed(result))
+    return;
 
   // 2. Known characteristic instanceId, but the mapped device is unknown.
   chrome.bluetoothLowEnergy.getCharacteristic(charId, function (result) {
-    if (result || !chrome.runtime.lastError) {
-      chrome.test.fail('getCharacteristics should have failed');
-    }
+    if (!expectFailed(result))
+      return;
 
     // 3. Known characteristic instanceId, but the mapped service is unknown.
     chrome.bluetoothLowEnergy.getCharacteristic(charId, function (result) {
-      if (result || !chrome.runtime.lastError) {
-        chrome.test.fail('getCharacteristics should have failed');
-      }
+      if (!expectFailed(result))
+        return;
 
       // 4. Known characteristic instanceId, but the mapped service does not
       // know about the characteristic.
       chrome.bluetoothLowEnergy.getCharacteristic(charId, function (result) {
-        if (result || !chrome.runtime.lastError) {
-          chrome.test.fail('getCharacteristics should have failed');
-        }
+        if (!expectFailed(result))
+          return;
 
         // 5. Success.
         chrome.bluetoothLowEnergy.getCharacteristic(charId, function (result) {
           if (chrome.runtime.lastError) {
-            chrome.test.fail(chrome.runtime.lastError.message);
+            error = 'Unexpected error: ' + chrome.runtime.lastError.message;
+            chrome.test.runTests([testGetCharacteristic]);
           }
 
           characteristic = result;

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

@@ -2,7 +2,13 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
+var error;
+
 function testGetCharacteristics() {
+  if (error !== undefined) {
+    chrome.test.sendMessage('fail');
+    chrome.test.fail(error);
+  }
   chrome.test.assertEq(2, chrcs.length);
 
   chrome.test.assertEq('char_id0', chrcs[0].instanceId);
@@ -52,25 +58,37 @@ function testGetCharacteristics() {
 var serviceId = 'service_id0';
 var chrcs = null;
 
-function failOnError() {
+function earlyError(message) {
+  error = message;
+  chrome.test.runTests([testGetCharacteristics]);
+}
+
+function expectSuccess() {
   if (chrome.runtime.lastError) {
-    chrome.test.fail(chrome.runtime.lastError.message);
+    earlyError('Unexpected Error: ' + chrome.runtime.lastError.message);
   }
+  return error !== undefined;
 }
 
 chrome.bluetoothLowEnergy.getCharacteristics(serviceId, function (result) {
   if (result || !chrome.runtime.lastError) {
-    chrome.test.fail('getCharacteristics should have failed.');
+    earlyError('getCharacteristics should have failed.');
+    return;
   }
 
   chrome.bluetoothLowEnergy.getCharacteristics(serviceId, function (result) {
-    failOnError();
+    if (expectSuccess())
+      return;
+
     if (!result || result.length != 0) {
-      chrome.test.fail('Characteristics should be empty.');
+      earlyError('Characteristics should be empty.');
+      return;
     }
 
     chrome.bluetoothLowEnergy.getCharacteristics(serviceId, function (result) {
-      failOnError();
+      if (expectSuccess())
+        return;
+
       chrcs = result;
 
       chrome.test.sendMessage('ready', function (message) {

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

@@ -2,7 +2,13 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
+var error;
+
 function testGetDescriptor() {
+  if (error !== undefined) {
+    chrome.test.sendMessage('fail');
+    chrome.test.fail(error);
+  }
   chrome.test.assertTrue(descriptor != null, '\'descriptor\' is null');
 
   chrome.test.assertEq('desc_id0', descriptor.instanceId);
@@ -27,42 +33,52 @@ var badDescId = 'desc_id1';
 
 var descriptor = null;
 
+function earlyError(message) {
+  error = message;
+  chrome.test.runTests([testGetDescriptor]);
+}
+
+function expectError(result) {
+  if (result || !chrome.runtime.lastError) {
+    earlyError('getDescriptor should have failed');
+  }
+  return error !== undefined;
+}
+
 // 1. Unknown descriptor instanceId.
 getDescriptor(badDescId, function (result) {
   if (result || !chrome.runtime.lastError) {
-    chrome.test.fail('getDescriptor should have failed for \'badDescId\'');
+    earlyError('getDescriptor should have failed for \'badDescId\'');
+    return;
   }
 
   // 2. Known descriptor instanceId, but the mapped device is unknown.
   getDescriptor(descId, function (result) {
-    if (result || !chrome.runtime.lastError) {
-      chrome.test.fail('getDescriptor should have failed');
-    }
+    if (expectError(result))
+      return;
 
     // 3. Known descriptor instanceId, but the mapped service is unknown.
     getDescriptor(descId, function (result) {
-      if (result || !chrome.runtime.lastError) {
-        chrome.test.fail('getDescriptor should have failed');
-      }
+      if (expectError(result))
+        return;
 
       // 4. Known descriptor instanceId, but the mapped characteristic is
       // unknown.
       getDescriptor(descId, function (result) {
-        if (result || !chrome.runtime.lastError) {
-          chrome.test.fail('getDescriptor should have failed');
-        }
+        if (expectError(result))
+          return;
 
         // 5. Known descriptor instanceId, but the mapped the characteristic
         // does not know about the descriptor.
         getDescriptor(descId, function (result) {
-          if (result || !chrome.runtime.lastError) {
-            chrome.test.fail('getDescriptor should have failed');
-          }
+          if (expectError(result))
+            return;
 
           // 6. Success.
           getDescriptor(descId, function (result) {
             if (chrome.runtime.lastError) {
-              chrome.test.fail(chrome.runtime.lastError.message);
+              earlyError(chrome.runtime.lastError.message);
+              return;
             }
 
             descriptor = result;

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

@@ -2,7 +2,13 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
+var error;
+
 function testGetDescriptors() {
+  if (error !== undefined) {
+    chrome.test.sendMessage('fail');
+    chrome.test.fail(error);
+  }
   chrome.test.assertEq(2, descrs.length);
 
   chrome.test.assertEq('desc_id0', descrs[0].instanceId);
@@ -35,34 +41,48 @@ var badCharId = 'char_id1';
 
 var descrs = null;
 
+function earlyError(message) {
+  error = message;
+  chrome.test.runTests([testGetDescriptors]);
+}
+
 function failOnError() {
   if (chrome.runtime.lastError) {
-    chrome.test.fail(chrome.runtime.lastError.message);
+    earlyError(chrome.runtime.lastError.message);
+    return true;
   }
+  return false;
 }
 
 // 1. Unknown characteristic ID.
 getDescriptors(badCharId, function (result) {
   if (result || !chrome.runtime.lastError) {
-    chrome.test.fail('getDescriptors should have failed for \'badCharId\'');
+    earlyError('getDescriptors should have failed for \'badCharId\'');
+    return;
   }
 
   // 2. Known ID, unknown characteristic.
   getDescriptors(charId, function (result) {
     if (result || !chrome.runtime.lastError) {
-      chrome.test.fail('getDescriptors should have failed');
+      earlyError('getDescriptors should have failed');
+      return;
     }
 
     // 3. Empty descriptors.
     getDescriptors(charId, function (result) {
-      failOnError();
+      if (failOnError())
+        return;
+
       if (!result || result.length != 0) {
-        chrome.test.fail('Descriptors should be empty');
+        earlyError('Descriptors should be empty');
+        return;
       }
 
       // 4. Success.
       getDescriptors(charId, function (result) {
-        failOnError();
+        if (failOnError())
+          return;
+
         descrs = result;
 
         chrome.test.sendMessage('ready', function (message) {

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

@@ -2,7 +2,13 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
+var error;
+
 function testGetIncludedServices() {
+  if (error !== undefined) {
+    chrome.test.sendMessage('fail');
+    chrome.test.fail(error);
+  }
   chrome.test.assertTrue(services != null, '\'services\' is null');
   chrome.test.assertEq(1, services.length);
   chrome.test.assertEq(includedId, services[0].instanceId);
@@ -14,28 +20,41 @@ var serviceId = 'service_id0';
 var includedId = 'service_id1';
 var services = null;
 
+function earlyError(message) {
+  error = message;
+  chrome.test.runTests([testGetIncludedServices]);
+}
+
 function failOnError() {
   if (chrome.runtime.lastError) {
-    chrome.test.fail(chrome.runtime.lastError.message);
+    earlyError(chrome.runtime.lastError.message);
+    return true;
   }
+  return false;
 }
 
 chrome.bluetoothLowEnergy.getIncludedServices(serviceId, function (result) {
   // No mapping for |serviceId|.
   if (result || !chrome.runtime.lastError) {
-    chrome.test.fail('getIncludedServices should have failed');
+    earlyError('getIncludedServices should have failed');
+    return;
   }
 
   chrome.test.sendMessage('ready', function (message) {
     chrome.bluetoothLowEnergy.getIncludedServices(serviceId, function (result) {
-      failOnError();
+      if (failOnError())
+        return;
+
       if (!result || result.length != 0) {
-        chrome.test.fail('Included services should be empty.');
+        earlyError('Included services should be empty.');
+        return;
       }
 
       chrome.bluetoothLowEnergy.getIncludedServices(serviceId,
           function (result) {
-            failOnError();
+            if (failOnError())
+              return;
+
             services = result;
 
             chrome.test.sendMessage('ready', function (message) {

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

@@ -7,7 +7,7 @@ var charId = 'char_id0';
 
 getCharacteristic(charId, function (result) {
   if (chrome.runtime.lastError) {
-    chrome.test.fail(chrome.runtime.lastError.message);
+    chrome.test.sendMessage(chrome.runtime.lastError.message);
   }
 
   chrome.test.assertEq(charId, result.instanceId);
@@ -15,7 +15,7 @@ getCharacteristic(charId, function (result) {
   chrome.test.sendMessage('ready', function (message) {
     getCharacteristic(charId, function (result) {
       if (result || !chrome.runtime.lastError) {
-        chrome.test.fail('Call to getCharacteristic should have failed');
+        chrome.test.sendMessage('Call to getCharacteristic should have failed');
       }
 
       chrome.test.sendMessage('ready', function (message) {

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

@@ -7,7 +7,7 @@ var descId = 'desc_id0';
 
 getDescriptor(descId, function (result) {
   if (chrome.runtime.lastError) {
-    chrome.test.fail(chrome.runtime.lastError.message);
+    chrome.test.sendMessage(chrome.runtime.lastError.message);
   }
 
   chrome.test.assertEq(descId, result.instanceId);
@@ -15,7 +15,7 @@ getDescriptor(descId, function (result) {
   chrome.test.sendMessage('ready', function (message) {
     getDescriptor(descId, function (result) {
       if (result || !chrome.runtime.lastError) {
-        chrome.test.fail('Call to getDescriptor should have failed');
+        chrome.test.sendMessage('Call to getDescriptor should have failed');
       }
 
       chrome.test.sendMessage('ready', function (message) {

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

@@ -6,7 +6,7 @@ chrome.bluetoothLowEnergy.onServiceAdded.addListener(function (result) {
   // getService should return this service.
   chrome.bluetoothLowEnergy.getService(result.instanceId, function (service) {
     if (chrome.runtime.lastError) {
-      chrome.test.fail(chrome.runtime.lastError.message);
+      chrome.test.sendMessage(chrome.runtime.lastError.message);
     }
 
     chrome.test.assertEq(result.instanceId, service.instanceId);
@@ -19,7 +19,7 @@ chrome.bluetoothLowEnergy.onServiceRemoved.addListener(function (result) {
   // getService should return error.
   chrome.bluetoothLowEnergy.getService(result.instanceId, function (service) {
     if (service || !chrome.runtime.lastError) {
-      chrome.test.fail('Call to getService should have failed.');
+      chrome.test.sendMessage('Call to getService should have failed.');
     }
 
     chrome.test.sendMessage('getServiceFail', function (message) {

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

@@ -2,7 +2,13 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
+var error;
+
 function testGetService() {
+  if (error !== undefined) {
+    chrome.test.sendMessage('fail');
+    chrome.test.fail(error);
+  }
   chrome.test.assertTrue(service != null);
 
   chrome.test.assertEq(serviceId, service.instanceId);
@@ -20,34 +26,48 @@ var badServiceId = 'service_id1';
 
 var service = null;
 
+function earlyError(message) {
+  error = message;
+  chrome.test.runTests([testGetService]);
+}
+
 function failOnError() {
   if (chrome.runtime.lastError) {
-    chrome.test.fail(chrome.runtime.lastError.message);
+    earlyError(chrome.runtime.lastError.message);
+    return true;
   }
+  return false;
 }
 
-// 1. Unknown service instanceId.
-chrome.bluetoothLowEnergy.getService(badServiceId, function(result) {
+function failOnSuccess(result) {
   if (result || !chrome.runtime.lastError) {
-    chrome.test.fail('Unexpected service.');
+    earlyError('Unexpected service.');
+    return true;
   }
+  return false;
+}
+
+// 1. Unknown service instanceId.
+chrome.bluetoothLowEnergy.getService(badServiceId, function(result) {
+  if (failOnSuccess(result))
+    return;
 
   // 2. Known service instanceId, but the mapped device is unknown.
   chrome.bluetoothLowEnergy.getService(serviceId, function(result) {
-    if (result || !chrome.runtime.lastError) {
-      chrome.test.fail('Unexpected service.');
-    }
+    if (failOnSuccess(result))
+      return;
 
     // 3. Known service instanceId, but the mapped device does not know about
     // the service.
     chrome.bluetoothLowEnergy.getService(serviceId, function(result) {
-      if (result || !chrome.runtime.lastError) {
-        chrome.test.fail('Unexpected service.');
-      }
+      if (failOnSuccess(result))
+        return;
 
       // 4. Success.
       chrome.bluetoothLowEnergy.getService(serviceId, function(result) {
-        failOnError();
+        if (failOnError())
+          return;
+
         service = result;
 
         chrome.test.sendMessage('ready', function(message) {

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

@@ -2,7 +2,13 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
+var error;
+
 function testGetServices() {
+  if (error !== undefined) {
+    chrome.test.sendMessage('fail');
+    chrome.test.fail(error);
+  }
   chrome.test.assertEq(2, services.length);
 
   chrome.test.assertEq('service_id0', services[0].instanceId);
@@ -25,25 +31,38 @@ function testGetServices() {
 var deviceAddress = '11:22:33:44:55:66';
 var services = null;
 
+function earlyError(message) {
+  error = message;
+  chrome.test.runTests([testGetServices]);
+}
+
 function failOnError() {
   if (chrome.runtime.lastError) {
-    chrome.test.fail(chrome.runtime.lastError.message);
+    earlyError(chrome.runtime.lastError.message);
+    return true;
   }
+  return false;
 }
 
 chrome.bluetoothLowEnergy.getServices(deviceAddress, function(result) {
   if (result || !chrome.runtime.lastError) {
-    chrome.test.fail('Unexpected device.');
+    earlyError('Unexpected device.');
+    return;
   }
 
   chrome.bluetoothLowEnergy.getServices(deviceAddress, function(result) {
-    failOnError();
+    if (failOnError())
+      return;
+
     if (!result || result.length != 0) {
-      chrome.test.fail('Services should be empty.');
+      earlyError('Services should be empty.');
+      return;
     }
 
     chrome.bluetoothLowEnergy.getServices(deviceAddress, function(result) {
-      failOnError();
+      if (failOnError())
+        return;
+
       services = result;
 
       chrome.test.sendMessage('ready', function(message) {

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

@@ -2,7 +2,13 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
+var error;
+
 function testReadCharacteristicValue() {
+  if (error !== undefined) {
+    chrome.test.sendMessage('fail');
+    chrome.test.fail(error);
+  }
   chrome.test.assertTrue(characteristic != null, '\'characteristic\' is null');
   chrome.test.assertEq(charId, characteristic.instanceId);
 
@@ -15,29 +21,39 @@ var badCharId = 'char_id1';
 
 var characteristic = null;
 
+function earlyError(message) {
+  error = message;
+  chrome.test.runTests([testReadCharacteristicValue]);
+}
+
+
 // 1. Unknown characteristic instanceId.
 readCharacteristicValue(badCharId, function (result) {
   if (result || !chrome.runtime.lastError) {
-    chrome.test.fail('\'badCharId\' did not cause failure');
+    earlyError('\'badCharId\' did not cause failure');
+    return;
   }
 
   // 2. Known characteristic instanceId, but call failure.
   readCharacteristicValue(charId, function (result) {
     if (result || !chrome.runtime.lastError) {
-      chrome.test.fail('readCharacteristicValue should have failed');
+      earlyError('readCharacteristicValue should have failed');
+      return;
     }
 
     // 3. Call should succeed.
     readCharacteristicValue(charId, function (result) {
       if (chrome.runtime.lastError) {
-        chrome.test.fail(chrome.runtime.lastError.message);
+        earlyError(chrome.runtime.lastError.message);
+        return;
       }
 
       characteristic = result;
 
-      chrome.test.sendMessage('ready', function (message) {
+      chrome.test.sendMessage('ready', function (reply) {
         chrome.test.runTests([testReadCharacteristicValue]);
       });
     });
   });
 });
+

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

@@ -2,7 +2,13 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
+var error;
+
 function testReadDescriptorValue() {
+  if (error !== undefined) {
+    chrome.test.sendMessage('fail');
+    chrome.test.fail(error);
+  }
   chrome.test.assertTrue(descriptor != null, '\'descriptor\' is null');
   chrome.test.assertEq(descId, descriptor.instanceId);
 
@@ -15,22 +21,30 @@ var badDescId = 'desc_id1';
 
 var descriptor = null;
 
+function earlyError(message) {
+  error = message;
+  chrome.test.runTests([testReadDescriptorValue]);
+}
+
 // 1. Unknown descriptor instanceId.
 readDescriptorValue(badDescId, function (result) {
   if (result || !chrome.runtime.lastError) {
-    chrome.test.fail('\'badDescId\' did not cause failure');
+    earlyError('\'badDescId\' did not cause failure');
+    return;
   }
 
   // 2. Known descriptor instanceId, but call failure.
   readDescriptorValue(descId, function (result) {
     if (result || !chrome.runtime.lastError) {
-      chrome.test.fail('readDescriptorValue should have failed');
+      earlyError('readDescriptorValue should have failed');
+      return;
     }
 
     // 3. Call should succeed.
     readDescriptorValue(descId, function (result) {
       if (chrome.runtime.lastError) {
-        chrome.test.fail(chrome.runtime.lastError.message);
+        earlyError(chrome.runtime.lastError.message);
+        return;
       }
 
       descriptor = result;

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

@@ -2,7 +2,13 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
+var error;
+
 function testStartStopNotifications() {
+  if (error !== undefined) {
+    chrome.test.sendMessage('fail');
+    chrome.test.fail(error);
+  }
   chrome.test.assertEq(1, Object.keys(changedChrcs).length);
   chrome.test.assertEq(charId0, changedChrcs[charId0].instanceId);
   chrome.test.succeed();
@@ -23,33 +29,27 @@ var ble = chrome.bluetoothLowEnergy;
 var start = ble.startCharacteristicNotifications;
 var stop = ble.stopCharacteristicNotifications;
 
-function sendReady(errorMessage) {
-  chrome.test.sendMessage('ready', function (message) {
-    if (errorMessage) {
-      chrome.test.fail(errorMessage);
-      return;
-    }
 
+function earlyError(message) {
+  error = message;
   chrome.test.runTests([testStartStopNotifications]);
-  });
 }
 
 function expectError(expectedMessage) {
   if (!chrome.runtime.lastError) {
-    sendReady('Expected error: ' + expectedMessage);
-    return;
-  }
-
-  if (chrome.runtime.lastError.message != expectedMessage) {
-    sendReady('Expected error: ' + expectedMessage + ', got error: ' +
+    earlyError('Expected error: ' + expectedMessage);
+  } else if (chrome.runtime.lastError.message != expectedMessage) {
+    earlyError('Expected error: ' + expectedMessage + ', got error: ' +
         expectedMessage);
   }
+  return error !== undefined;
 }
 
 function expectSuccess() {
   if (chrome.runtime.lastError) {
-    sendReady('Unexpected error: ' + chrome.runtime.lastError.message);
+    earlyError('Unexpected error: ' + chrome.runtime.lastError.message);
   }
+  return error !== undefined;
 }
 
 ble.onCharacteristicValueChanged.addListener(function (chrc) {
@@ -57,26 +57,48 @@ ble.onCharacteristicValueChanged.addListener(function (chrc) {
 });
 
 start('foo', function () {
-  expectError(errorNotFound);
+  if (expectError(errorNotFound))
+    return;
+
   start(charId2, function () {
-    expectError(errorPermissionDenied);
+    if (expectError(errorPermissionDenied))
+      return;
+
     stop(charId0, function () {
-      expectError(errorNotNotifying);
+      if (expectError(errorNotNotifying))
+        return;
+
       start(charId0, function () {
-        expectError(errorOperationFailed);
+        if (expectError(errorOperationFailed))
+          return;
+
         start(charId0, function () {
-          expectSuccess();
+          if (expectSuccess())
+            return;
+
           start(charId0, function () {
-            expectError(errorAlreadyNotifying);
+            if (expectError(errorAlreadyNotifying))
+              return;
+
             start(charId1, function () {
-              expectSuccess();
+              if (expectSuccess())
+                return;
+
               stop(charId1, function () {
-                expectSuccess();
+                if (expectSuccess())
+                  return;
+
                 stop(charId1, function () {
-                  expectError(errorNotNotifying);
+                  if (expectError(errorNotNotifying))
+                    return;
+
                   stop(charId2, function () {
-                    expectError(errorNotNotifying);
-                    sendReady(undefined);
+                    if (expectError(errorNotNotifying))
+                      return;
+
+                    chrome.test.sendMessage('ready', function (message) {
+                      chrome.test.runTests([testStartStopNotifications]);
+                    });
                   });
                 });
               });

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

@@ -2,7 +2,7 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 function listener(data) {
-  chrome.test.fail('Event should not have been received.');
+  chrome.test.sendMessage('Event should not have been received.');
 }
 
 chrome.bluetoothLowEnergy.onServiceChanged.addListener(listener);

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

@@ -2,7 +2,13 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
+var error;
+
 function testWriteCharacteristicValue() {
+  if (error !== undefined) {
+    chrome.test.sendMessage('fail');
+    chrome.test.fail(error);
+  }
   chrome.test.assertTrue(characteristic != null, '\'characteristic\' is null');
   chrome.test.assertEq(charId, characteristic.instanceId);
 
@@ -29,22 +35,30 @@ var writeValue = new ArrayBuffer(bytes.length);
 var valueBytes = new Uint8Array(writeValue);
 valueBytes.set(bytes);
 
+function earlyError(message) {
+  error = message;
+  chrome.test.runTests([testWriteCharacteristicValue]);
+}
+
 // 1. Unknown characteristic instanceId.
 writeCharacteristicValue(badCharId, writeValue, function (result) {
   if (result || !chrome.runtime.lastError) {
-    chrome.test.fail('\'badCharId\' did not cause failure');
+    earlyError('\'badCharId\' did not cause failure');
+    return;
   }
 
   // 2. Known characteristic instanceId, but call failure.
   writeCharacteristicValue(charId, writeValue, function (result) {
     if (result || !chrome.runtime.lastError) {
-      chrome.test.fail('writeCharacteristicValue should have failed');
+      earlyError('writeCharacteristicValue should have failed');
+      return;
     }
 
     // 3. Call should succeed.
     writeCharacteristicValue(charId, writeValue, function (result) {
       if (chrome.runtime.lastError) {
-        chrome.test.fail(chrome.runtime.lastError.message);
+        earlyError(chrome.runtime.lastError.message);
+        return;
       }
 
       chrome.bluetoothLowEnergy.getCharacteristic(charId, function (result) {

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

@@ -2,7 +2,13 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
+var error;
+
 function testWriteDescriptorValue() {
+  if (error !== undefined) {
+    chrome.test.sendMessage('fail');
+    chrome.test.fail(error);
+  }
   chrome.test.assertTrue(descriptor != null, '\'descriptor\' is null');
   chrome.test.assertEq(descId, descriptor.instanceId);
 
@@ -16,6 +22,11 @@ function testWriteDescriptorValue() {
   chrome.test.succeed();
 }
 
+function earlyError(message) {
+  error = message;
+  chrome.test.runTests([testWriteDescriptorValue]);
+}
+
 var writeDescriptorValue = chrome.bluetoothLowEnergy.writeDescriptorValue;
 var descId = 'desc_id0';
 var badDescId = 'desc_id1';
@@ -30,19 +41,22 @@ valueBytes.set(bytes);
 // 1. Unknown descriptor instanceId.
 writeDescriptorValue(badDescId, writeValue, function (result) {
   if (result || !chrome.runtime.lastError) {
-    chrome.test.fail('\'badDescId\' did not cause failure');
+    earlyError('\'badDescId\' did not cause failure');
+    return;
   }
 
   // 2. Known descriptor instanceId, but call failure.
   writeDescriptorValue(descId, writeValue, function (result) {
     if (result || !chrome.runtime.lastError) {
-      chrome.test.fail('writeDescriptorValue should have failed');
+      earlyError('writeDescriptorValue should have failed');
+      return;
     }
 
     // 3. Call should succeed.
     writeDescriptorValue(descId, writeValue, function (result) {
       if (chrome.runtime.lastError) {
-        chrome.test.fail(chrome.runtime.lastError.message);
+        earlyError(chrome.runtime.lastError.message);
+        return;
       }
 
       chrome.bluetoothLowEnergy.getDescriptor(descId, function (result) {