context("cluster_louvain")
test_that("cluster_louvain works", {
library(igraph)
set.seed(42)
g <- make_graph("Zachary")
mc <- cluster_louvain(g)
expect_that(as.vector(membership(mc)),
equals(c(1,2,2,2,1,1,1,2,3,2,1,1,1,2,3,3,1,
1,3,1,3,1,3,4,4,4,3,4,4,3,3,4,3,3)))
expect_that(modularity(g, mc$membership), equals(max(mc$modularity)))
expect_that(length(mc), equals(4))
expect_that(sizes(mc),
equals(structure(c(11L, 6L, 11L, 6L), .Dim = 4L,
.Dimnames = structure(list(`Community sizes` = c("1",
"2", "3", "4")), .Names = "Community sizes"),
class = "table") ))
})
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