Nothing
context("utility-roc")
mtdt = list(pn = c(0, 0.5, 0.5, 1, 1, 1, 1),
pp = c(0, 0, 0.25, 0.25, 0.5, 0.75, 1),
pa = c(0, 1/6, 1/3, 1/2, 2/3, 5/6, 1))
test_that("utility-roc: common ROC curves", {
expect_equal(roc(mtdt, "rpp", "tpr"),
list(x = c(0, 1/6, 1/3, 1/2, 2/3, 5/6, 1),
y = c(0, 0.25, 0.5, 0.75, 0.75, 1, 1)))
})
test_that("utility-roc: evaluate ROC curve at cutoff", {
# Cutoff = 0 or 1
expect_equal(roc(mtdt, "rpp", "tpr", c(0, 1)), c(0, 1))
# Cutoff is a data point
expect_equal(roc(mtdt, "rpp", "tpr", 2/3), 0.75)
# Cutoff is not a data point
expect_equal(roc(mtdt, "rpp", "tpr", 2/3 + 1/10), 0.9)
})
test_that("utility-roc: cutoff(s) outside of [0, 1]", {
expect_warning(roc(mtdt, "rpp", "tpr", c(-0.1, 0, 0.1)))
expect_warning(roc(mtdt, "rpp", "tpr", c(0.9, 1, 1.1)))
})
test_that("utility-roc: invalid 'cdfx' or 'cdfy'", {
expect_error(roc(mtdt, "fpp", "tpr"))
expect_error(roc(mtdt, "fpr", "tpp"))
})
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