Nothing
#! /usr/bin/env Rscript
library(testthat)
library(rly)
context("Bad token name")
Lexer <- R6::R6Class("Lexer",
public = list(
tokens = c('NUMBER', 'PLUS', '-', 'MINUS'),
t_PLUS = '\\+',
t_MINUS = '-',
t_NUMBER = '\\d+',
t_ignore = " \t",
t_error = function(t) { }
)
)
test_that("comment", {
expect_output(expect_error(rly::lex(Lexer), "Can't build lexer"),
"ERROR .* Bad token name '-'")
})
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