@Test
  public void testRouterMetadataCacheUnexpectedInternalErrorOnGetCompositeBlob() throws Exception {
    routerMetadataCacheErrorOnGetCompositeBlob(ServerErrorCode.UnknownError, RouterErrorCode.UnexpectedInternalError,
        false);
  }
Tests that there no metadata cache evictions with a large enough cache.
@throws Exception
ambry-router/src/test/java/com/github/ambry/router/NonBlockingRouterTest.java