test_that("error formatting works properly", {
  x <- set_errors(rep(11111.22222, 8),
                  c(12345678, 1234.5678, 12.345678, 1.2345678,
                    .12345678, .012345678, .000012345678, .000000012345678))

  expect_equal(capture.output(print(x)), c(
    "Errors: 1.234568e+07 1.234568e+03 1.234568e+01 1.234568e+00 1.234568e-01 ...",
    "[1] 11111.22 11111.22 11111.22 11111.22 11111.22 11111.22 11111.22 11111.22"
  ))

  for (i in seq_along(x))
    expect_equal(capture.output(print(x[i])), format(x[i]))

  expect_equal(format(x, notation="parenthesis"),
               c("10000(10000000)", "11000(1000)", "11110(10)", "11111(1)",
                 "11111.2(1)", "11111.22(1)", "11111.22222(1)", "11111.22222000(1)"))
  expect_equal(format(x, notation="parenthesis", digits=3),
               c("10000(12300000)", "11110(1230)", "11111.2(123)", "11111.22(123)",
                 "11111.222(123)", "11111.2222(123)", "11111.2222200(123)", "11111.2222200000(123)"))
  expect_equal(format(x, notation="parenthesis", scientific=TRUE),
               c("1(1000)e4", "1.1(1)e4", "1.111(1)e4", "1.1111(1)e4", "1.11112(1)e4",
                 "1.111122(1)e4", "1.111122222(1)e4", "1.111122222000(1)e4"))

  expect_equal(format(x, notation="plus-minus"), sapply(list(
    c("10000", "10000000"), c("11000", "1000"), c("11110", "10"), c("11111", "1"),
    c("11111.2", "0.1"), c("11111.22", "0.01"), c("11111.22222", "0.00001"), c("11111.22222000", "0.00000001")),
    paste, collapse=paste("", .pm, "")))
  expect_equal(format(x, notation="plus-minus", digits=3), sapply(list(
    c("10000", "12300000"), c("11110", "1230"), c("11111.2", "12.3"), c("11111.22", "1.23"),
    c("11111.222", "0.123"), c("11111.2222", "0.0123"), c("11111.2222200", "0.0000123"), c("11111.2222200000", "0.0000000123")),
    paste, collapse=paste("", .pm, "")))
  expect_equal(format(x, notation="plus-minus", scientific=TRUE), sapply(list(
    c("(1", "1000)e4"), c("(1.1", "0.1)e4"), c("(1.111", "0.001)e4"), c("(1.1111", "0.0001)e4"),
    c("(1.11112", "0.00001)e4"), c("(1.111122", "0.000001)e4"), c("(1.111122222", "0.000000001)e4"),
    c("(1.111122222000", "0.000000000001)e4")),
    paste, collapse=paste("", .pm, "")))

  x <- set_errors(10, 1)
  expect_equal(format(x - set_errors(10)), "0(1)")
  expect_equal(format(x - x), "0(0)")

  x <- set_errors(c(0.4, NA, NaN, Inf))
  expect_equal(format(x[1]), "0.4(0)")
  expect_equal(format(x[2]), "NA(NA)")
  expect_equal(format(x[3]), "NaN(NaN)")
  expect_equal(format(x[4]), "Inf(Inf)")
})