tests/testthat/test_g_plot2_curves.R

In precrec: Calculate Accurate Precision-Recall and ROC (Receiver Operator Characteristics) Curves

#' @importFrom precrec

context("PT 1: Plot curves")
# Test plot(x, y, ...)

pt2_create_mscurves <- function() {
  s1 <- c(1, 2, 3, 4)
  s2 <- c(5, 6, 7, 8)
  s3 <- c(2, 4, 6, 8)
  scores <- join_scores(s1, s2, s3)

  l1 <- c(1, 0, 1, 1)
  l2 <- c(0, 1, 1, 1)
  l3 <- c(1, 1, 0, 1)
  labels <- join_labels(l1, l2, l3)

  mdat <- mmdata(scores, labels)
  evalmod(mdat)
}

pt2_create_smcurves <- function(raw_curves = FALSE) {
  s1 <- c(1, 2, 3, 4)
  s2 <- c(5, 6, 7, 8)
  s3 <- c(2, 4, 6, 8)
  scores <- join_scores(s1, s2, s3)

  l1 <- c(1, 0, 1, 1)
  l2 <- c(0, 1, 1, 1)
  l3 <- c(1, 1, 0, 1)
  labels <- join_labels(l1, l2, l3)

  mdat <- mmdata(scores, labels, expd_first = "dsids")
  evalmod(mdat, raw_curves = raw_curves)
}

pt2_create_mmcurves <- function(raw_curves = FALSE) {
  s1 <- c(1, 2, 3, 4)
  s2 <- c(5, 6, 7, 8)
  s3 <- c(2, 4, 6, 8)
  s4 <- c(2, 4, 6, 8)
  scores <- join_scores(s1, s2, s3, s4)

  l1 <- c(1, 0, 1, 1)
  l2 <- c(0, 1, 1, 1)
  l3 <- c(1, 1, 0, 1)
  l4 <- c(1, 1, 0, 1)
  labels <- join_labels(l1, l2, l3, l4)

  mdat <- mmdata(scores, labels,
    modnames = c("m1", "m2"), dsids = c(1, 2),
    expd_first = "modnames"
  )
  evalmod(mdat, raw_curves = raw_curves)
}

ap2_test_roc_prc <- function(curves, ...) {
  testthat::expect_silent(plot(curves, ...))
  testthat::expect_silent(plot(curves, c("ROC", "PRC"), ...))
  testthat::expect_silent(plot(curves, "ROC", ...))
  testthat::expect_silent(plot(curves, "PRC", ...))
}

test_that("plot sscurves", {
  pdf(NULL)
  on.exit(dev.off())

  data(P10N10)
  curves <- evalmod(scores = P10N10$scores, labels = P10N10$labels)

  ap2_test_roc_prc(curves)
})

test_that("plot mscurves", {
  pdf(NULL)
  on.exit(dev.off())

  curves <- pt2_create_mscurves()

  ap2_test_roc_prc(curves)
  ap2_test_roc_prc(curves, show_legend = TRUE)
})

test_that("plot smcurves", {
  pdf(NULL)
  on.exit(dev.off())

  curves <- pt2_create_smcurves()

  ap2_test_roc_prc(curves)
  ap2_test_roc_prc(curves, show_cb = FALSE)

  curves2 <- pt2_create_smcurves(raw_curves = TRUE)
  ap2_test_roc_prc(curves2, raw_curves = TRUE)
})

test_that("plot mmcurves", {
  pdf(NULL)
  on.exit(dev.off())

  curves <- pt2_create_mmcurves()

  ap2_test_roc_prc(curves)
  ap2_test_roc_prc(curves, show_cb = TRUE)
  ap2_test_roc_prc(curves, raw_curves = FALSE)

  curves2 <- pt2_create_mmcurves(raw_curves = TRUE)
  ap2_test_roc_prc(curves2, raw_curves = TRUE)
})

test_that("plot() accepts type", {
  pdf(NULL)
  on.exit(dev.off())

  curves <- pt2_create_mmcurves()
  expect_silent(plot(curves, type = "l"))
  expect_silent(plot(curves, type = "p"))
  expect_silent(plot(curves, type = "b"))
})

test_that("plot() accepts show_cb", {
  pdf(NULL)
  on.exit(dev.off())

  curves <- pt2_create_mmcurves()
  expect_silent(plot(curves, show_cb = TRUE))
  expect_silent(plot(curves, show_cb = FALSE))
})

test_that("plot() accepts raw_curves", {
  pdf(NULL)
  on.exit(dev.off())

  curves <- pt2_create_mmcurves(raw_curves = TRUE)
  expect_silent(plot(curves, raw_curves = TRUE))
  expect_silent(plot(curves, raw_curves = FALSE))
})

test_that("plot() accepts show_legend", {
  pdf(NULL)
  on.exit(dev.off())

  curves <- pt2_create_mmcurves()
  expect_silent(plot(curves, show_legend = TRUE))
  expect_silent(plot(curves, show_legend = FALSE))
})


test_that("plot raw_curve option sscurves", {
  get_args <- function(x, y = NULL, ...) {
    .get_plot_arglist(attr(x, "args"), y,
      def_curvetype = c("ROC", "PRC"),
      def_type = "l", def_show_cb = FALSE,
      def_raw_curves = TRUE, def_add_np_nn = TRUE,
      def_show_legend = FALSE, ...
    )
  }

  data(P10N10)
  curves1 <- evalmod(scores = P10N10$scores, labels = P10N10$labels)

  args1a <- get_args(curves1, raw_curves = TRUE)
  expect_true(args1a[["raw_curves"]])

  args1b <- get_args(curves1, raw_curves = FALSE)
  expect_false(args1b[["raw_curves"]])

  args1c <- get_args(curves1)
  expect_true(args1c[["raw_curves"]])
})

test_that("plot raw_curve option mscurves", {
  get_args <- function(x, y = NULL, ...) {
    .get_plot_arglist(attr(x, "args"), y,
      def_curvetype = c("ROC", "PRC"),
      def_type = "l", def_show_cb = FALSE,
      def_raw_curves = TRUE, def_add_np_nn = TRUE,
      def_show_legend = TRUE, ...
    )
  }

  curves1 <- pt2_create_mscurves()

  args1a <- get_args(curves1, raw_curves = TRUE)
  expect_true(args1a[["raw_curves"]])

  args1b <- get_args(curves1, raw_curves = FALSE)
  expect_false(args1b[["raw_curves"]])

  args1c <- get_args(curves1)
  expect_true(args1c[["raw_curves"]])
})

test_that("plot raw_curve option smcurves", {
  get_args <- function(x, y = NULL, ...) {
    .get_plot_arglist(attr(x, "args"), y,
      def_curvetype = c("ROC", "PRC"),
      def_type = "l", def_show_cb = TRUE,
      def_raw_curves = NULL, def_add_np_nn = TRUE,
      def_show_legend = FALSE, ...
    )
  }

  curves1 <- pt2_create_smcurves()

  expect_error(get_args(curves1, raw_curves = TRUE), "Invalid raw_curves.")

  args1b <- get_args(curves1, raw_curves = FALSE)
  expect_false(args1b[["raw_curves"]])

  args1c <- get_args(curves1)
  expect_false(args1c[["raw_curves"]])

  curves2 <- pt2_create_smcurves(raw_curves = TRUE)

  args2a <- get_args(curves2, raw_curves = TRUE)
  expect_true(args2a[["raw_curves"]])

  args2b <- get_args(curves2, raw_curves = FALSE)
  expect_false(args2b[["raw_curves"]])

  args2c <- get_args(curves2)
  expect_true(args2c[["raw_curves"]])
})

test_that("plot raw_curve option mmcurves", {
  get_args <- function(x, y = NULL, ...) {
    .get_plot_arglist(attr(x, "args"), y,
      def_curvetype = c("ROC", "PRC"),
      def_type = "l", def_show_cb = FALSE,
      def_raw_curves = NULL, def_add_np_nn = TRUE,
      def_show_legend = TRUE, ...
    )
  }

  curves1 <- pt2_create_mmcurves()

  expect_error(get_args(curves1, raw_curves = TRUE), "Invalid raw_curves.")

  args1b <- get_args(curves1, raw_curves = FALSE)
  expect_false(args1b[["raw_curves"]])

  args1c <- get_args(curves1)
  expect_false(args1c[["raw_curves"]])

  curves2 <- pt2_create_mmcurves(raw_curves = TRUE)

  args2a <- get_args(curves2, raw_curves = TRUE)
  expect_true(args2a[["raw_curves"]])

  args2b <- get_args(curves2, raw_curves = FALSE)
  expect_false(args2b[["raw_curves"]])

  args2c <- get_args(curves2)
  expect_true(args2c[["raw_curves"]])
})