message: Avoid attaching package during tests
diff: -library("DBI")
  -library("testthat")
  -
  -skip_if_not_installed("bit64")
  -
  -library("bit64")
  -
  # this tests both retrieval and scans
  test_that("we can roundtrip an integer64", {
  con <- dbConnect(duckdb::duckdb(bigint="integer64"))
  on.exit(dbDisconnect(con, shutdown = TRUE))
  - df <- data.frame(a=as.integer64(42), b=as.integer64(-42), c=as.integer64(NA))
  + df <- data.frame(a = bit64::as.integer64(42), b = bit64::as.integer64(-42), c = bit64::as.integer64(NA))
  duckdb::duckdb_register(con, "df", df)
  