tests/testthat/test_tool_pm.R

In prcbench: Testing Workbench for Precision-Recall Curves

context("Tool: PerfMeas")
# Test ToolPerfMeas
#      create_toolset
#

test_that("ToolPerfMeas - R6ClassGenerator", {
  expect_true(is(ToolPerfMeas, "R6ClassGenerator"))
  expect_equal(attr(ToolPerfMeas, "name"), "ToolPerfMeas_generator")

  expect_equal(grep(
    "pm_wrapper",
    body(ToolPerfMeas$private_methods$f_wrapper)
  ), 2)
})

test_that("ToolPerfMeas - R6", {
  toolset <- ToolPerfMeas$new()

  expect_true(is(toolset, "ToolPerfMeas"))
  expect_true(is(toolset, "ToolIFBase"))
  expect_true(is(toolset, "R6"))
})

test_that("create_toolset", {
  toolset1 <- create_toolset("PERF")[[1]]
  expect_true(is(toolset1, "ToolPerfMeas"))
  expect_equal(toolset1$get_toolname(), "PerfMeas")

  toolset2 <- create_toolset("perf")[[1]]
  expect_true(is(toolset2, "ToolPerfMeas"))
  expect_equal(toolset2$get_toolname(), "PerfMeas")
})

test_that("create_toolset: calc_auc", {
  toolset1 <- create_toolset("PerfMeas")[[1]]
  expect_equal(environment(toolset1$clone)$private$def_calc_auc, TRUE)

  toolset2 <- create_toolset("PerfMeas", calc_auc = FALSE)[[1]]
  expect_equal(environment(toolset2$clone)$private$def_calc_auc, FALSE)
})

test_that("create_toolset: store_res", {
  toolset1 <- create_toolset("PerfMeas")[[1]]
  expect_equal(environment(toolset1$clone)$private$def_store_res, TRUE)

  toolset2 <- create_toolset("PerfMeas", store_res = FALSE)[[1]]
  expect_equal(environment(toolset2$clone)$private$def_store_res, FALSE)
})

test_that(".pm_wrapper", {
  testset <- create_testset("curve", "c1")[[1]]
  res <- .pm_wrapper(testset)

  expect_equal(res$x, c(0.5, 0.5, 1.0, 1.0))
  expect_equal(res$y, c(1.0, 0.5, 0.6666667, 0.5), tolerance = .001)
  expect_true(is.na(res$auc))

  res2 <- .pm_wrapper(testset, store_res = FALSE)
  expect_true(is.null(res2))

  res3 <- .pm_wrapper(testset, calc_auc = TRUE)
  expect_equal(res3$x, c(0.5, 0.5, 1.0, 1.0))
  expect_equal(res3$y, c(1.0, 0.5, 0.6666667, 0.5), tolerance = .001)
  expect_equal(res3$auc, 0.2916667, tolerance = .001)
})