Bringing 4 more BluetoothTest.* unit tests to Mac

device/bluetooth/test/bluetooth_test_mac.mm

 // Copyright 2015 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.
 
+#include "base/strings/string_number_conversions.h"
 #include "device/bluetooth/bluetooth_adapter_mac.h"
 #include "device/bluetooth/test/bluetooth_test_mac.h"
 #include "device/bluetooth/test/mock_bluetooth_central_manager_mac.h"
+#include "third_party/ocmock/OCMock/OCMock.h"
+
+#if defined(OS_IOS)
+#import <CoreBluetooth/CoreBluetooth.h>
+#else  // !defined(OS_IOS)
+#import <IOBluetooth/IOBluetooth.h>
+#endif  // defined(OS_IOS)
 
 namespace device {
 
+// UUID1 hashes to 01:00:00:90:1E:BE, and UUID2 to 02:00:00:8B:74:63.
+const std::string BluetoothTestMac::kTestPeripheralUUID1 =
+    "34045B00-0000-0000-0000-000000000000";
+const std::string BluetoothTestMac::kTestPeripheralUUID2 =
+    "EC1B8F00-0000-0000-0000-000000000000";
+
 BluetoothTestMac::BluetoothTestMac() {}
 
 BluetoothTestMac::~BluetoothTestMac() {}
 
 void BluetoothTestMac::SetUp() {}
 
 void BluetoothTestMac::InitWithDefaultAdapter() {
   adapter_mac_ = BluetoothAdapterMac::CreateAdapter().get();
   adapter_ = adapter_mac_;
 }
@@ skipping 18 matching lines @@
           .get();
   adapter_ = adapter_mac_;
 
   if (BluetoothAdapterMac::IsLowEnergyAvailable()) {
     id low_energy_central_manager = [[MockCentralManager alloc] init];
     [low_energy_central_manager setState:CBCentralManagerStatePoweredOn];
     adapter_mac_->SetCentralManagerForTesting(low_energy_central_manager);
   }
 }
 
+CBPeripheral* CreateMockPeripheral(NSString* identifier) {
+  Class peripheral_class = NSClassFromString(@"CBPeripheral");
+  id mock_peripheral = [OCMockObject mockForClass:[peripheral_class class]];
+  [static_cast<CBPeripheral*>(
+      [[mock_peripheral stub] andReturnValue:@(CBPeripheralStateDisconnected)])
+      performSelector:@selector(state)];
+  [[[mock_peripheral stub] andReturn:[NSString string]] name];
+  Class uuid_class = NSClassFromString(@"NSUUID");
+  [[[mock_peripheral stub]
+      andReturn:[[uuid_class performSelector:@selector(UUID)]
+                    performSelector:@selector(initWithUUIDString:)
+                         withObject:identifier]] identifier];
+
+  return mock_peripheral;
+}
+
+NSDictionary* CreateAdvertisementData(NSString* name, NSArray* uuids) {
+  NSMutableDictionary* advertisement_data =
+      [NSMutableDictionary dictionaryWithDictionary:@{
+        @"CBAdvertisementDataLocalNameKey" : name,
+        @"CBAdvertisementDataServiceDataKey" : [NSDictionary dictionary],
+        @"CBAdvertisementDataIsConnectable" : @(YES),
+      }];
+  if (uuids)
+    [advertisement_data setObject:uuids
+                           forKey:@"CBAdvertisementDataServiceUUIDsKey"];
+  return advertisement_data;
+}
+
+void BluetoothTestMac::DiscoverLowEnergyDevice(int device_ordinal) {
+  CBCentralManager* central_manager = adapter_mac_->low_energy_central_manager_;
+  BluetoothLowEnergyCentralManagerDelegate* central_manager_delegate =
+      adapter_mac_->low_energy_central_manager_delegate_;
+  switch (device_ordinal) {
+    case 1: {
+      CBPeripheral* peripheral = CreateMockPeripheral(
+          [NSString stringWithUTF8String:kTestPeripheralUUID1.c_str()]);
+      NSString* name = [NSString stringWithUTF8String:kTestDeviceName.c_str()];
+      NSArray* uuids = @[
+        [CBUUID
+            UUIDWithString:[NSString stringWithUTF8String:kTestUUID1.c_str()]],
+        [CBUUID
+            UUIDWithString:[NSString stringWithUTF8String:kTestUUID2.c_str()]]
+      ];
+      NSDictionary* advertisement_data = CreateAdvertisementData(name, uuids);
+      [central_manager_delegate centralManager:central_manager
+                         didDiscoverPeripheral:peripheral
+                             advertisementData:advertisement_data
+                                          RSSI:0];
+      break;
+    }
+    case 2: {
+      CBPeripheral* peripheral = CreateMockPeripheral(
+          [NSString stringWithUTF8String:kTestPeripheralUUID1.c_str()]);
+      NSString* name = [NSString stringWithUTF8String:kTestDeviceName.c_str()];
+      NSArray* uuids = @[
+        [CBUUID
+            UUIDWithString:[NSString stringWithUTF8String:kTestUUID3.c_str()]],
+        [CBUUID
+            UUIDWithString:[NSString stringWithUTF8String:kTestUUID4.c_str()]]
+      ];
+      NSDictionary* advertisement_data = CreateAdvertisementData(name, uuids);
+      [central_manager_delegate centralManager:central_manager
+                         didDiscoverPeripheral:peripheral
+                             advertisementData:advertisement_data
+                                          RSSI:0];
+      break;
+    }
+    case 3: {
+      CBPeripheral* peripheral = CreateMockPeripheral(
+          [NSString stringWithUTF8String:kTestPeripheralUUID1.c_str()]);
+      NSString* name =
+          [NSString stringWithUTF8String:kTestDeviceNameEmpty.c_str()];
+      NSArray* uuids = nil;
+      NSDictionary* advertisement_data = CreateAdvertisementData(name, uuids);
+      [central_manager_delegate centralManager:central_manager
+                         didDiscoverPeripheral:peripheral
+                             advertisementData:advertisement_data
+                                          RSSI:0];
+      break;
+    }
+    case 4: {
+      CBPeripheral* peripheral = CreateMockPeripheral(
+          [NSString stringWithUTF8String:kTestPeripheralUUID2.c_str()]);
+      NSString* name =
+          [NSString stringWithUTF8String:kTestDeviceNameEmpty.c_str()];
+      NSArray* uuids = nil;
+      NSDictionary* advertisement_data = CreateAdvertisementData(name, uuids);
+      [central_manager_delegate centralManager:central_manager
+                         didDiscoverPeripheral:peripheral
+                             advertisementData:advertisement_data
+                                          RSSI:0];
+      break;
+    }
+  }
+}
+
+bool BluetoothTestMac::PlatformSupportsLowEnergy() {
+  return BluetoothAdapterMac::IsLowEnergyAvailable();
+}
+
+std::string BluetoothTestMac::FindCBUUIDForHashTarget() {
+  // The desired first 6 digits of the hash.
+  const std::string target = "010000";
+  // 128 bit buffer to be encoded as a hex string.
+  int64_t input[2] = {0};
+  // There are 2^24 ~ 10^7 possible configurations for the first 6 digits, ie.
+  // each input has probability 10^-7 of succeeding, under the dubious
+  // assumption that traversing inputs sequentially is as good as traversing
+  // them randomly. After 4*10^7 iterations then the probability of not
+  // succeeeding is < exp(-18) ~ 10^-8 via the Chernoff Bound
+  // http://www.cs.berkeley.edu/~jfc/cs174/lecs/lec10/lec10.pdf.

[scheib, 2015/07/23 18:15:25]

Nice try at nerd sniping https://xkcd.com/356/
I still live and you only stole 10 minutes of life.

[krstnmnlsn, 2015/07/23 22:03:29]

Haha! next time..

+  while (input[0] < LLONG_MAX) {
+    // Encode as a hexidecimal number.  Note that on x86 input[0] is stored as a
+    // little-endian number, and so read backwards by HexEncode.
+    std::string input_str = base::HexEncode(&input, sizeof(input));
+    input_str.insert(20, "-");
+    input_str.insert(16, "-");
+    input_str.insert(12, "-");
+    input_str.insert(8, "-");
+    char raw[3];
+    crypto::SHA256HashString(input_str, raw, sizeof(raw));
+    if (base::HexEncode(raw, sizeof(raw)) == target) {
+      return input_str;
+      break;

[scheib, 2015/07/23 18:15:25]

Don't need a break; after a return; 

[krstnmnlsn, 2015/07/23 22:03:29]

:P

+    }
+    ++input[0];
+  }
+  return "";
+}
+
 }  // namespace device