Function TEST

test/cancelable_callback_unittest.cc:28–43

Cancel(). - Callback can be run multiple times. - After Cancel(), Run() completes but has no effect.

//  - Callback can be run multiple times.
//  - After Cancel(), Run() completes but has no effect.
TEST(CancelableCallbackTest, Cancel) {
  int count = 0;
  CancelableClosure cancelable(
      butil::Bind(&Increment, butil::Unretained(&count)));

  butil::Closure callback = cancelable.callback();
  callback.Run();
  EXPECT_EQ(1, count);

  callback.Run();
  EXPECT_EQ(2, count);

  cancelable.Cancel();
  callback.Run();
  EXPECT_EQ(2, count);
}

// Cancel() called multiple times.
//  - Cancel() cancels all copies of the wrapped callback.