namespace-concat in fbcode/quic

Summary:
Concatenate adjacent namespaces + format

This is a codemod. It was automatically generated and will be landed once it is approved and tests are passing in sandcastle.
You have been added as a reviewer by Sentinel or Butterfly.

Autodiff project: nc
Autodiff partition: fbcode.quic
Autodiff bookmark: ad.nc.fbcode.quic

Reviewed By: hanidamlaj

Differential Revision: D65365244

fbshipit-source-id: 0bbaa7684d03caf8fc8eff3439a0865940398220

quic/api/test/QuicTransportFunctionsTest.cpp

@@ -24,8 +24,7 @@
 using namespace folly;
 using namespace testing;
 
-namespace quic {
-namespace test {
+namespace quic::test {
 
 using PacketStreamDetails = OutstandingPacketMetadata::StreamDetails;
 
@@ -4842,5 +4841,4 @@ TEST_F(QuicTransportFunctionsTest, onQuicStreamClosed) {
   EXPECT_EQ(conn->streamManager->streamCount(), 0);
 }
 
-} // namespace test
-} // namespace quic
+} // namespace quic::test