tests/testthat/test-var_names.R

In nuggets: Extensible Framework for Data Pattern Exploration

#######################################################################
# nuggets: An R framework for exploration of patterns in data
# Copyright (C) 2025 Michal Burda
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program. If not, see <https://www.gnu.org/licenses/>.
#######################################################################


test_that("varnames", {
    expect_equal(var_names(NULL), NULL)
    expect_equal(var_names(character(0)), character(0))
    expect_equal(var_names(c("a=1", "a=2", "z", "b=x", "b=y")),
                 c("a", "a", "z", "b", "b"))

    expect_error(var_names(1:5),
                 "`x` must be a character vector or NULL.")
})