@Test
  public void networkClientAndSelectorErrorsTest() throws Exception {
    for (MockSelectorState state : MockSelectorState.values()) {
      if (state == MockSelectorState.Good) {
        continue;
      }
      mockSelectorState.set(state);
      executeOpAndVerify(blobIds, RouterErrorCode.OperationTimedOut, true, true, true, false, false);
    }
  }
Test for behavior on errors in the network client and selector
@throws Exception
ambry-router/src/test/java/com/github/ambry/router/TtlUpdateManagerTest.java