Nothing
test_that("Cholesky decomposition works", {
cov <- sample_covariance_matrix(5)
chol <- cov_to_chol(cov)
expect_true(all.equal(cov, chol_to_cov(chol)))
chol <- cov_to_chol(cov)
expect_true(all.equal(cov, chol_to_cov(chol)))
expect_equal(unique_chol(numeric()), numeric())
expect_equal(cov_to_chol(matrix(0, 2, 2)), c(0, 0, 0))
})
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