tbl_grade_vector(1:10, letters[1:10])
#> <gradethis_graded: [Incorrect]
#>   Your result should be a vector of text (class `character`), but it is
#>   a vector of integers (class `integer`).
#> >
Sys.setenv("LANGUAGE" = "es")
tbl_grade_vector(1:10, letters[1:10])
#> <gradethis_graded: [Incorrect]
#>   Su resultado debe ser un vector de texto (clase `character`), pero es
#>   un vector de números enteros (clase `integer`).
#> >