tests/testthat/test-ecoli_infections_df.R

In infectiousR: Access Infectious and Epidemiological Data via 'disease.sh API'

# infectiousR - Access Infectious and Epidemiological Data via 'disease.sh API'
# Version 0.1.0
# Copyright (C) 2025 Renzo Caceres Rossi
#
# 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/>.

# ecoli_infections_df

library(testthat)

# Test 1: Confirm that it is a data frame
test_that("ecoli_infections_df is a data frame", {
  expect_s3_class(ecoli_infections_df, "data.frame")
})

# Test 2: Confirm that it has 3 named columns
test_that("ecoli_infections_df has the correct column names", {
  expect_named(ecoli_infections_df, c("year", "week", "cases"))
})

# Test 3: Confirm that it has exactly 3 variables (columns)
test_that("ecoli_infections_df has 3 columns", {
  expect_equal(length(ecoli_infections_df), 3)
})

# Test 4: Confirm that it has exactly 646 observations (rows)
test_that("ecoli_infections_df has 646 rows", {
  expect_equal(nrow(ecoli_infections_df), 646)
})

# Test 5: Confirm that all columns are numeric
test_that("All columns in ecoli_infections_df are numeric", {
  expect_true(is.numeric(ecoli_infections_df$year))
  expect_true(is.numeric(ecoli_infections_df$week))
  expect_true(is.numeric(ecoli_infections_df$cases))
})