make_wider.md
In xlr: Create Table Summaries and Export Neat Tables to 'Excel'

that errors from inputting an invalid x is caught correctly

Code
  make_wider(1)
Condition
  Error in `as_string()`:
  ! Can't convert a double vector to a string.

Code
  make_wider("not_a_df")
Condition
  Error in `make_wider()`:
  ! `not_a_df` must be a data.frame, a tibble or a xlr_table.

that errors from missing N or Percent is caught correctly

Code
  make_wider(df)
Condition
  Error in `make_wider()`:
  x `df` must contain the columns `N` and `Percent`.
  i Are you sure that you used `make_wider()` following `build_table()`, `build_mtable()` or `build_qtable()`?

Code
  make_wider(df)
Condition
  Error in `make_wider()`:
  x `df` must contain the columns `N` and `Percent`.
  i Are you sure that you used `make_wider()` following `build_table()`, `build_mtable()` or `build_qtable()`?

Code
  make_wider(df)
Condition
  Error in `make_wider()`:
  x `df` must contain the columns `N` and `Percent`.
  i Are you sure that you used `make_wider()` following `build_table()`, `build_mtable()` or `build_qtable()`?

make_wider errors when only one grouping variable

Code
  make_wider(df)
Condition
  Error in `make_wider()`:
  x `df` must contain more than one grouping column.

that errors from inputting an invalid top_variable is caught correctly

Code
  make_wider(input, not_a_col)
Condition
  Error in `make_wider()`:
  x `input` does not contain the column `not_a_col`.

that errors from inputting an invalid names_prefix

Code
  make_wider(input, names_prefix = function(x) x)
Condition
  Error in `make_wider()`:
  ! `names_prefix` must be a single string, not a function.