tests/testthat/test-common.R

In MedianaDesigner: Power and Sample Size Calculations for Clinical Trials

test_that("CreateTable works", {
  
  check = function(column_width) {

    column_names = c("Trial arm", "Sample size")
    trial_arms = c("Control", "Treatment")
    sample_size = 10
    data_frame = data.frame(trial_arms, sample_size)
    title = paste0("Table 1. Number of enrolled patients")

    column_width = column_width
    table = CreateTable(data_frame, column_names, column_width, title, FALSE)

    expect_equal(table$label, title)

    t = table$value
    expect_equal(typeof(t), "list")
    expect_equal(length(t), 2)
    expect_equal(colnames(t), column_names)
    expect_equal(rownames(t), c("1","2"))

    if (is.null(column_width)) {
      expect_equal(table$column_width, c(2,2))
    } else {
      expect_equal(table$column_width, column_width)
    }

    expect_equal(table$type, "table")
    expect_equal(table$footnote, NULL)
    expect_equal(table$page_break, FALSE)

  }

  check(c(5, 1.5))
  check(NULL)
})

test_that("ContinuousErrorCheck works", {
  
  res = ContinuousErrorCheck(NULL, 
                            2, 
                            lower_values = c(0),
                            lower_values_sign = c(">"),
                            upper_values = c(NA),
                            upper_values_sign = c(NA),
                            "Patient enrollment period (enrollment_period)",
                            c("Value"),
                            "double",
                            1)
  expect_equal(res, c(1,1))

  expect_error(
    ContinuousErrorCheck(0.5, 
                            1, 
                            lower_values = c(0),
                            lower_values_sign = c(">"),
                            upper_values = c(NA),
                            upper_values_sign = c(NA),
                            "Patient enrollment period (enrollment_period)",
                            c("Value"),
                            "int",
                            NA),
    info = "Checking for non integer value"
  )

  expect_error(
    ContinuousErrorCheck(c(0.5, 1), 
                            2, 
                            lower_values = c(0.5, 2),
                            lower_values_sign = c(">=", ">="),
                            upper_values = c(NA),
                            upper_values_sign = c(NA),
                            "Patient enrollment period (enrollment_period)",
                            c("Value"),
                            "double",
                            NA),
    info = "Checking for lower value with >= sign"
  )

  expect_error(
    ContinuousErrorCheck(c(0.5, 1), 
                            2, 
                            lower_values = c(NA),
                            lower_values_sign = c(NA),
                            upper_values = c(1, 1),
                            upper_values_sign = c("<", "<"),
                            "Patient enrollment period (enrollment_period)",
                            c("Value"),
                            "double",
                            NA),
    info = "Checking for lower value with >= sign"
  )

  expect_error(
    ContinuousErrorCheck(c(0.5, 1.5), 
                            2, 
                            lower_values = c(NA),
                            lower_values_sign = c(NA),
                            upper_values = c(1, 1),
                            upper_values_sign = c("<=", "<="),
                            "Patient enrollment period (enrollment_period)",
                            c("Value"),
                            "double",
                            NULL),
    info = "Checking for lower value with >= sign"
  )

  expect_error(
    ContinuousErrorCheck(NULL, 
                            1, 
                            lower_values = c(NA),
                            lower_values_sign = c(NA),
                            upper_values = c(NA),
                            upper_values_sign = c(NA),
                            "Patient enrollment period (enrollment_period)",
                            c("Value"),
                            "double",
                            NULL),
    info = "Checking for NULL value"
  )

})