test_that("Test message on cff", {
  expect_snapshot(def <- cff("abcde"))

  expect_identical(def, cff())
  nocff <- system.file("examples/CITATION_skeleton.cff",
    package = "cffR"
  )
  expect_snapshot(afile <- cff(nocff))

  expect_identical(afile, cff())
})


test_that("Walk trough full lifecycle", {
  complete <- system.file("examples/CITATION_complete.cff",
    package = "cffr"
  )

  # Read
  read <- cff_read(complete)
  expect_s3_class(read, "cff")
  expect_true(cff_validate(read, verbose = FALSE))
  expect_snapshot(read)

  # Modify
  modify <- cff_create(read, keys = list(title = "A new title"))
  expect_snapshot(modify)
  expect_true(length(read) == length(modify))
  expect_true(length((setdiff(names(read), names(modify)))) == 0)
  expect_false(read$title == modify$title)



  # Write
  tmp <- tempfile(fileext = ".cff")
  cff_write(modify, outfile = tmp, validate = FALSE, verbose = FALSE)
  expect_silent(file_exist_abort(tmp))

  # Validate
  expect_true(cff_validate(tmp, verbose = FALSE))

  file.remove(tmp)
})

test_that("Recursive parsing", {
  complete <- system.file("examples/CITATION_complete.cff",
    package = "cffr"
  )

  # Read
  expect_snapshot(read <- cff(complete))
  read <- cff_read(complete)

  # Test all levels
  expect_s3_class(read, "cff")
  expect_s3_class(read$authors, "cff")
  expect_s3_class(read$authors[[1]], "cff")
  expect_s3_class(read$references, "cff")
  expect_s3_class(read$references[[1]]$authors, "cff")
  expect_s3_class(read$references[[1]]$authors[[1]], "cff")
})


test_that("Fuzzy matching of keys on cff", {
  expect_snapshot(cff(
    tittle = "a",
    cff_version = "ar",
    version = "200",
    messange = "Fix my keys"
  ))

  expect_snapshot(cffobj <- cff(
    tittle = "a",
    cff_version = "1.2.0", version = "200",
    messange = "aa",
    anthor = list(list(
      "family-names" = "a",
      "given-names" = "b"
    ))
  ))

  expect_true(is_cff(cffobj))
  expect_true(cff_validate(cffobj, verbose = FALSE))
})

test_that("duplicated", {
  expect_snapshot(ss <- cff(
    tittle = "a", tittle = "ar",
    version = "200",
    messange = "Fix my keys"
  ))

  expect_s3_class(ss, "cff")
  expect_length(ss, 3)
})

test_that("unnamed", {
  expect_snapshot(ss <- cff(
    path = "a", "200", "Fix my keys"
  ), error = TRUE)

  expect_snapshot(s1 <- cff(path = NULL, title = "a", "b", version = 1))
  expect_snapshot(s2 <- cff(
    path = NULL, title = "a", "aa", "bb", "cc",
    "b", version = 1, "h", "j"
  ))

  expect_identical(s1, s2)
})