Nothing
landscapemetrics_class_landscape_value <- lsm_c_te(landscape)
test_lsm <- matrix(data = NA, nrow = 25, ncol = 30)
test_lsm[c(5:7), c(5:7)] <- 1
test_lsm[4, 6] <- 1
test_lsm[6, 8] <- 1
test_lsm[8, 6] <- 1
test_lsm[6, 4] <- 1
test_lsm[6, 6] <- 2
test_lsm <- terra::rast(test_lsm)
test_that("lsm_c_te is typestable", {
expect_s3_class(lsm_c_te(landscape), "tbl_df")
expect_s3_class(lsm_c_te(landscape_stack), "tbl_df")
expect_s3_class(lsm_c_te(landscape_list), "tbl_df")
})
test_that("lsm_c_te returns the desired number of columns", {
expect_equal(ncol(landscapemetrics_class_landscape_value), 6)
})
test_that("lsm_c_te returns in every column the correct type", {
expect_type(landscapemetrics_class_landscape_value$layer, "integer")
expect_type(landscapemetrics_class_landscape_value$level, "character")
expect_type(landscapemetrics_class_landscape_value$class, "integer")
expect_type(landscapemetrics_class_landscape_value$id, "integer")
expect_type(landscapemetrics_class_landscape_value$metric, "character")
expect_type(landscapemetrics_class_landscape_value$value, "double")
})
test_that("lsm_l_te equals 0 if only one patch is present", {
result <- lsm_c_te(landscape_uniform, count_boundary = FALSE)
expect_equal(result$value, 0)
})
test_that("lsm_c_te can handle raster with different xy resolution", {
expect_s3_class(lsm_c_te(landscape_diff_res), "tbl_df")
})
test_that("lsm_c_te is the same if count_boundary = FALSE and vice versa", {
result_cbF <- lsm_c_te(test_lsm, count_boundary = FALSE)
result_cbT <- lsm_c_te(test_lsm, count_boundary = TRUE)
expect_true(result_cbF$value[[1]] == result_cbF$value[[2]])
expect_true(result_cbT$value[[1]] != result_cbF$value[[2]])
})
test_that("lsm_c_te equals FRAGSTATS", {
lsm_landscape <- lsm_c_te(landscape) |> dplyr::pull(value)
lsm_augusta <- lsm_c_te(augusta_nlcd) |> dplyr::pull(value)
fs_landscape <- dplyr::filter(fragstats_class, LID == "landscape", metric == "te") |> dplyr::pull(value)
fs_augusta <- dplyr::filter(fragstats_class, LID == "augusta_nlcd", metric == "te") |> dplyr::pull(value)
expect_true(test_relative(obs = lsm_landscape, exp = fs_landscape, tolerance = tol_rel))
expect_true(test_relative(obs = lsm_augusta, exp = fs_augusta, tolerance = tol_rel))
})
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