Check new input cases

[thiagomaf]

mutate.with.erroR/R/mutate_with_error.R

Lines 45 to 51 in 41bd61b

	#' mutate_with_error(
	#' C = A + B,
	#' D ~ A / B,
	#' "E = A + B",
	#' "G ~ A / B",
	#' as.formula("H ~ A / B")
	#' )

Check for mutate_with_error(A1 = D ~ B / C, A2 = "D ~ B / C", A3 = as.formula(D ~ B / C ), A4 = as.formula("D ~ B / C" ) )