tests/testthat/test-compute_frequencies.R

In FRBCesab/forcis: An R Client to Access the FORCIS Database

## Data for test ----

df <- read.table(system.file(file.path("extdata", "FORCIS_net_sample.csv"),
                             package = "forcis"), dec = ".", sep = ";")

df <- add_data_type(df, "Net")
df <- select_taxonomy(df, "VT")

df2 <- df
df2 <- add_data_type(df2, "CPR North")


## compute_frequencies() ----

test_that("Test compute_frequencies() for error", {
  
  expect_error(compute_frequencies(df2),
               paste0("This function is not designed to work with 'CPR North' ",
                      "or 'Sediment trap' data"),
               fixed = TRUE)
})

test_that("Test compute_frequencies() for success", {
  
  expect_message(res <- compute_frequencies(df))
  
  expect_true(is.data.frame(res))
  expect_equal(ncol(res), 15L)
  expect_equal(nrow(res), 46324L)
  
  expect_message(res <- compute_frequencies(df, aggregate = FALSE))
  
  expect_true(is.data.frame(res))
  expect_equal(ncol(res), 18L)
  expect_equal(nrow(res), 135352L)
})