Nothing
context("multivariate generators")
seed <- 1234567890
sigma <- matrix(c(4,2,2,3), ncol=2)
mean <- c(1,2)
test_that("consecutive calls yield different random numbers (normal)", {
skip_if_not_installed("mvtnorm")
dqset.seed(seed)
n1 <- dqrmvnorm(10, mean = mean, sigma=sigma)
n2 <- dqrmvnorm(10, mean = mean, sigma=sigma)
expect_false(all(n1 == n2))
})
test_that("setting seed produces identical normaly distributed numbers", {
dqset.seed(seed)
n1 <- dqrmvnorm(10, mean = mean, sigma=sigma)
dqset.seed(seed)
n2 <- dqrmvnorm(10, mean = mean, sigma=sigma)
expect_equal(n1, n2)
})
test_that("Means and variance as expected",{
dqset.seed(seed)
n1 <- dqrmvnorm(1e5, mean = mean, sigma=sigma)
expect_equal(mean, colMeans(n1), tolerance = 0.01)
expect_equal(sigma, var(n1), tolerance = 0.01)
})
#
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