test_that("edge_density works", {
g <- sample_gnp(50, 4 / 50)
gd <- edge_density(g)
gd2 <- ecount(g) / vcount(g) / (vcount(g) - 1) * 2
expect_equal(gd, gd2)
####
g <- sample_gnp(50, 4 / 50, directed = TRUE)
gd <- edge_density(g)
gd2 <- ecount(g) / vcount(g) / (vcount(g) - 1)
expect_equal(gd, gd2)
})
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