c(
  person("Yihui", "Xie", role = c("aut", "cre"), email = "xie@yihui.name", comment = c(ORCID = "0000-0003-0645-5666", URL = "https://yihui.org")),
  person("Tomas", "Kalibera", role = "ctb"),
  person("Steven", "Mortimer", role = "ctb", email="reportmort@gmail.com")
  )
A minimal, dependency-free testing framework for R packages.
    Write tests as simple R expressions that return TRUE, using assert() for
    assertions (with informative error messages on failure), has_error() /
    has_warning() / has_message() for testing conditions, and test_pkg() to
    run all tests with full access to internal (non-exported) package
    functions. Snapshot testing via Markdown files is also supported.
Yihui Xie [aut, cre] (ORCID: <https://orcid.org/0000-0003-0645-5666>,
    URL: https://yihui.org),
  Tomas Kalibera [ctb],
  Steven Mortimer [ctb]