test_that("test if page attributes are assigned correctly", {
  a <- head(iris) |> rtf_subline(text = "sublinetest")

  expect_equal(attributes(a)$page$width, 8.5)
  expect_equal(attributes(a)$page$height, 11)
  expect_equal(attributes(a)$page$orientation, "portrait")
  expect_equal(attributes(a)$page$border_first, "double")
  expect_equal(attributes(a)$page$border_last, "double")
  expect_false(attributes(a)$page$use_color)
})

test_that("check justification when 'l' and 'r' ", {
  a <- head(iris) |> rtf_subline(text = "sublinetest")
  b <- head(iris) |> rtf_subline(text = "sublinetest", text_justification = "l")
  c <- head(iris) |> rtf_subline(text = "sublinetest", text_justification = "r")

  expect_equal(attributes(attributes(a)$rtf_subline)$text_justification, "l")
  expect_equal(attributes(attributes(b)$rtf_subline)$text_justification, "l")
  expect_equal(attributes(attributes(c)$rtf_subline)$text_justification, "r")
})


test_that("input argument checks", {
  expect_error(iris |> rtf_subline())
  expect_error(iris |> rtf_subline(text = "sublinetest", text_font = "1"))
  expect_error(iris |> rtf_subline(text = "sublinetest", text_format = 12))
  expect_error(iris |> rtf_subline(text = "sublinetest", text_font_size = "9"))
  expect_error(iris |> rtf_subline(text = "sublinetest", text_justification = "t"))
  expect_error(iris |> rtf_subline(text = "sublinetest", text_convert = "TRUE"))
})


test_that("check if use_color attribute is assigned correctly", {
  a <- head(iris) |> rtf_subline(text = "sublinetest", text_color = "blue")
  b <- head(iris) |> rtf_subline(text = "sublinetest", text_background_color = "green")
  c <- head(iris) |> rtf_subline(text = "sublinetest")

  expect_true(attributes(a)$page$use_color)
  expect_true(attributes(b)$page$use_color)
  expect_false(attributes(c)$page$use_color)
})

test_that("check justification when 'l' and text_indent_reference is table/page_margin ", {
  a <- head(iris) |>
    rtf_page(width = 5.5, col_width = 3) |>
    rtf_body()
  a_table <- a |> rtf_subline(text = "sublinetest", text_indent_reference = "table")
  expect_equal(attributes(attributes(a_table)$rtf_subline)$text_indent_left, 180)

  a_page <- a |> rtf_subline(text = "sublinetest", text_indent_reference = "page_margin")
  expect_equal(attributes(attributes(a_page)$rtf_subline)$text_indent_left, 0)
})