bf_inverse_gaussian <- InverseGaussianBernsteinFunction(eta = 1.133682)
test_that("Initialize `InverseGaussianBernsteinFunction`", {
expect_s4_class(
bf_inverse_gaussian,
class = "InverseGaussianBernsteinFunction"
)
expect_error(InverseGaussianBernsteinFunction(alpha = -0.5))
expect_error(InverseGaussianBernsteinFunction(alpha = 0))
expect_error(InverseGaussianBernsteinFunction(alpha = Inf))
expect_error(InverseGaussianBernsteinFunction(alpha = -1))
expect_error(InverseGaussianBernsteinFunction(alpha = c(1, 2)))
expect_error(InverseGaussianBernsteinFunction(alpha = NA))
expect_error(InverseGaussianBernsteinFunction(alpha = NaN))
})
cscale <- sqrt(2)
x <- seq(0, 10, by = 0.25)
actual_fn <- function(x, eta) {
sqrt(2 * x + eta^2) - eta
}
test_that("`valueOf` calculates expected values", {
expect_equal(
valueOf(bf_inverse_gaussian, x),
actual_fn(x, bf_inverse_gaussian@eta)
)
expect_equal(
valueOf(bf_inverse_gaussian, x),
valueOf0(bf_inverse_gaussian, x)
)
expect_equal(
valueOf(bf_inverse_gaussian, x, cscale = cscale),
actual_fn(cscale * x, bf_inverse_gaussian@eta)
)
})
d <- 7
test_that("`exIntensities` calculates expected values", {
expect_equal(
exIntensities(bf_inverse_gaussian, d),
ex_intensities_naive(
actual_fn, d,
eta = bf_inverse_gaussian@eta
)
)
expect_equal(
exIntensities(bf_inverse_gaussian, d, cscale = cscale),
ex_intensities_naive(
actual_fn, d,
eta = bf_inverse_gaussian@eta,
cscale = cscale
)
)
expect_equal(
exIntensities(bf_inverse_gaussian, d, cscale = cscale),
exIntensities(
bf_inverse_gaussian, d,
cscale = cscale,
method = "levy",
tolerance = testthat_tolerance()
)
)
expect_equal(
exIntensities(bf_inverse_gaussian, d, cscale = cscale),
exIntensities(
bf_inverse_gaussian, d,
cscale = cscale,
method = "stieltjes", tolerance = testthat_tolerance()
)
)
})
test_that("`exQMatrix` calculates expected values", {
expect_equal(
exQMatrix(bf_inverse_gaussian, d),
ex_qmatrix_naive(
actual_fn, d,
eta = bf_inverse_gaussian@eta
)
)
expect_equal(
exQMatrix(bf_inverse_gaussian, d, cscale = cscale),
ex_qmatrix_naive(
actual_fn, d,
cscale = cscale,
eta = bf_inverse_gaussian@eta
)
)
expect_equal(
exQMatrix(bf_inverse_gaussian, d, cscale = cscale),
exQMatrix(
bf_inverse_gaussian, d,
cscale = cscale,
method = "levy", tolerance = testthat_tolerance()
)
)
expect_equal(
exQMatrix(bf_inverse_gaussian, d, cscale = cscale),
exQMatrix(
bf_inverse_gaussian, d,
cscale = cscale,
method = "stieltjes", tolerance = testthat_tolerance()
)
)
})
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