# test_that("require_namespaces", {
# skip("This test is too error prone")
# if ("Hmisc" %in% loadedNamespaces()) unloadNamespace("Hmisc")
# #NB: survival is required by Hmisc, so Hmisc must be unloaded before
# if ("multcomp" %in% loadedNamespaces()) unloadNamespace("multcomp")
# #NB: survival is required by multcomp, so multcomp must be unloaded before
# if ("survival" %in% loadedNamespaces()) unloadNamespace("survival")
# expect_false("package:survival" %in% search())
# suppressMessages(require_namespaces(c("survival")))
# expect_false("package:survival" %in% search())
# expect_false(is.null(getNamespace("survival")))
# expect_error(
# suppressWarnings(suppressMessages(
# require_namespaces("DOES_NOT_EXIST_qweqweqweqwe")
# ))
# )
# })
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