tests/testthat/tests_map_multimap.R

In datastructures: Implementation of Core Data Structures

# datastructures: Implementation of core datastructures for R.
#
# Copyright (C) Simon Dirmeier
#
# This file is part of datastructures.
#
# datastructures 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.
#
# datastructures 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 datastructures. If not, see <http://www.gnu.org/licenses/>.


context("multimap")


test_that("multimap can store same keys", {
  h <- multimap("character")
  h <- insert(h, letters, seq(letters))
  h <- insert(h, letters, seq(letters))
  expect_equal(length(at(h, "a")), 2)
  expect_equal(unlist(at(h, "a")), c(1L, 1L))
})

test_that("multimap can store same keys", {
  h <- multimap("character")
  h <- insert(h, letters, seq(letters))
  h <- insert(h, letters, seq(letters))
  expect_equal(length(at(h, "a")), 2)
  expect_equal(unlist(at(h, "a")), c(1L, 1L))
})

test_that("multimap erase works", {
  h <- multimap()
  h <- insert(h, letters, letters)
  h <- erase(h, letters[1])
  expect_true(size(h) == 25)
  expect_error(h[letters[1]])
})

test_that("multimap does not overwrite", {
  h <- multimap()
  h <- insert(h, letters[1], "a")
  h <- insert(h, letters[1], "b")
  h <- insert(h, letters[1], "a")
  expect_equal(size(h), 3)
  expect_equal(length(h[letters[1]]), 3)
})