tests/testthat/test-dictionary.R

In libr: Libraries, Data Dictionaries, and a Data Step for R

context("Dictionary Tests")

base_path <- "c:\\packages\\libr\\tests\\testthat\\data"

base_path <- "./data"

dev <- FALSE

test_that("dict1: getDictionary() function works as expected.", {
  
  crs <- data.frame(name = rownames(mtcars), mtcars, stringsAsFactors = FALSE)
  
  attr(crs$name, "label") <- "Car Name"
  attr(crs$name, "description") <- "Derived from rownames"
  crs$type <- ifelse(crs$mpg > 20, "High", "Low")
  attr(crs$mpg, "format") <- "%.1f"
  
  res <- getDictionary(crs, "crs")

  expect_equal(nrow(res), 13)
  expect_equal(as.character(res[1, "Label"]), "Car Name")
  expect_equal(as.character(res[1, "Description"]), "Derived from rownames")
  expect_equal(res[13, "MaxChar"], 4)
  
})



test_that("dict2: dictionary() function works as expected with df.", {
  
  crs <- data.frame(name = rownames(mtcars), mtcars, stringsAsFactors = FALSE)
  
  attr(crs$name, "label") <- "Car Name"
  attr(crs$name, "description") <- "Derived from rownames"
  crs$type <- ifelse(crs$mpg > 20, "High", "Low")
  attr(crs$mpg, "format") <- "%.1f"
  
  res <- dictionary(crs)
  
  expect_equal(nrow(res), 13)
  
})



test_that("dict3: dictionary() function works as expected with tibble.", {
  
  library(tibble)
  
  crs <- tibble(name = rownames(mtcars), mtcars)
  
  attr(crs$name, "label") <- "Car Name"
  attr(crs$name, "description") <- "Derived from rownames"
  crs$type <- ifelse(crs$mpg > 20, "High", "Low")
  attr(crs$mpg, "format") <- "%.1f"
  attr(crs$hp, "justify") <- "left"
  
  res <- dictionary(crs)
  
  expect_equal(nrow(res), 13)
  
})


test_that("dict4: dictionary() function works as expected with lib.", {
  
  crs <- data.frame(name = rownames(mtcars), mtcars, stringsAsFactors = FALSE)
  
  attr(crs$name, "label") <- "Car Name"
  attr(crs$name, "description") <- "Derived from rownames"
  crs$type <- ifelse(crs$mpg > 20, "High", "Low")
  attr(crs$mpg, "format") <- "%.1f"
  attr(crs$name, "justify") <- "left"
  
  dat <- libname(dat, tempdir())
  
  dat <- lib_add(dat, crs)
  dat <- lib_add(dat, iris)
  dat <- lib_add(dat, beaver1)
  
  res <- dictionary(dat)
  
  expect_equal(nrow(res), 22)
  
  
  lib_delete(dat)
})



test_that("dict5: dictionary() function works as expected with df and standard_eval.", {
  
  
  options("libr.standard_eval" = TRUE)
  
  crs <- data.frame(name = rownames(mtcars), mtcars, stringsAsFactors = FALSE)
  
  attr(crs$name, "label") <- "Car Name"
  attr(crs$name, "description") <- "Derived from rownames"
  crs$type <- ifelse(crs$mpg > 20, "High", "Low")
  attr(crs$mpg, "format") <- "%.1f"
  
  res <- dictionary(crs)
  
  expect_equal(nrow(res), 13)
  
  options("libr.standard_eval" = FALSE)
  
})


test_that("dict6: dictionary() function works as expected with lib.", {
  
  options("libr.standard_eval" = TRUE)
  
  crs <- data.frame(name = rownames(mtcars), mtcars, stringsAsFactors = FALSE)
  
  attr(crs$name, "label") <- "Car Name"
  attr(crs$name, "description") <- "Derived from rownames"
  crs$type <- ifelse(crs$mpg > 20, "High", "Low")
  attr(crs$mpg, "format") <- "%.1f"
  attr(crs$name, "justify") <- "left"
  
  dat <- libname(dat, tempdir())
  
  dat <- lib_add(dat, crs)
  dat <- lib_add(dat, iris)
  dat <- lib_add(dat, beaver1)
  
  res <- dictionary(dat)
  
  res
  expect_equal(nrow(res), 22)
  
  
  lib_delete(dat)
  
  options("libr.standard_eval" = FALSE)
})


test_that("dict7: dictionary() parameter checks work as expected.", {
  
  f <- "fork"
  
  expect_error(dictionary(f))
  
  
})

test_that("dict8: dictionary() widths work as expected when width attribute set.", {
  
  crs <- data.frame(name = rownames(mtcars), mtcars, fork = "fork",
                    stringsAsFactors = FALSE)
  
  attr(crs$name, "width") <- 4
  attr(crs$name, "description") <- "Derived from rownames"

  
  res <- dictionary(crs)
  
  res
  
  expect_equal(res$Width[1], 4)  
  expect_equal(is.na(res$Width[13]), TRUE) 
  
})

test_that("dict9: dictionary() widths work as expected when width attribute not set.", {
  
  crs <- data.frame(name = rownames(mtcars), mtcars, fork = "fork", 
                    stringsAsFactors = FALSE)
  
  #attr(crs$name, "width") <- 4
  attr(crs$name, "description") <- "Derived from rownames"
  
  
  res <- dictionary(crs)
  
  res
  
  expect_equal(is.na(res$Width[1]), TRUE)  
  expect_equal(is.na(res$Width[13]), TRUE) 
  expect_equal(res$MaxChar[1], 19)  
  expect_equal(res$MaxChar[13], 4) 
  
})

test_that("dict10: dictionary() function works as expected with user-defined format.", {
  
  if (dev) {
    
    library(fmtr)
    
    fmt <- value(condition(x == 4, "A"),
                 condition(x == 8, "B"),
                 condition(TRUE, "C"))
    
    
    crs <- data.frame(name = rownames(mtcars), mtcars, stringsAsFactors = FALSE)
    
    fapply(crs$cyl, fmt)
    
    attr(crs$cyl, "format") <- fmt 
    
    # Shouldn't get an error
    res <- dictionary(crs)
    
    expect_equal(nrow(res), 12)
  
  } else
    expect_equal(TRUE, TRUE)
  
})

test_that("dict11: dictionary() function works with standard libname.", {
  
  
  if (dev) {
    libname(tst, file.path(base_path, "SDTM"), "csv")
    
    # Shouldn't get error here.
    d <- dictionary(tst)
    
    
    d
  
  } 
  
  expect_equal(TRUE, TRUE)
  
})

test_that("dict12: dictionary() function has no errors if data frame has no rows.", {
  
  crs <- data.frame(name = rownames(mtcars), mtcars, stringsAsFactors = FALSE)
  
  attr(crs$name, "label") <- "Car Name"
  attr(crs$name, "description") <- "Derived from rownames"
  crs$type <- ifelse(crs$mpg > 20, "High", "Low")
  attr(crs$mpg, "format") <- "%.1f"
  
  res <- dictionary(crs[0, ])
  
  expect_equal(nrow(res), 13)
  
})