# agridatasets - A Comprehensive Collection of Agricultural and Agronomic Datasets
# Version 0.1.0
# Copyright (C) 2026 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/>.

# bird_grazing

library(testthat)

# Test 1: Check that the object is a data.frame and has 3 columns
test_that("bird_grazing is a data.frame with 3 columns", {
  expect_s3_class(bird_grazing, "data.frame")
  expect_equal(ncol(bird_grazing), 3)
  expect_equal(length(bird_grazing), 3)
})

# Test 2: Check the number of rows
test_that("bird_grazing has 62 rows", {
  expect_equal(nrow(bird_grazing), 62)
})

# Test 3: Validate column names
test_that("bird_grazing has correct column names", {
  expect_named(
    bird_grazing,
    c("When", "Grazed", "Birds")
  )
})

# Test 4: Check data types
test_that("bird_grazing has correct data types", {
  expect_s3_class(bird_grazing$When, "factor")
  expect_equal(nlevels(bird_grazing$When), 2)
  expect_s3_class(bird_grazing$Grazed, "factor")
  expect_equal(nlevels(bird_grazing$Grazed), 2)
  expect_type(bird_grazing$Birds, "integer")
})