/usr/share/doc/r-cran-igraph/tests/testthat/test_get.adjlist.R is in r-cran-igraph 1.1.2-2ubuntu3.
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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 | context("as_adj_list")
test_that("as_adj_list works", {
library(igraph)
g <- sample_gnp(50, 2/50)
al <- as_adj_list(g)
g2 <- graph_from_adj_list(al, mode="all")
expect_that(graph.isomorphic(g, g2), is_true())
expect_that(graph.isomorphic.vf2(g, g2, vertex.color1=1:vcount(g),
vertex.color2=1:vcount(g2))$iso,
is_true())
####
el <- as_adj_edge_list(g)
for (i in 1:vcount(g)) {
a <- E(g)[.inc(i)]
expect_that(length(a), is_equivalent_to(length(el[[i]])))
expect_that(sort(el[[i]]), is_equivalent_to(sort(a)))
}
g <- sample_gnp(50, 4/50, directed=TRUE)
el1 <- as_adj_edge_list(g, mode="out")
el2 <- as_adj_edge_list(g, mode="in")
for (i in 1:vcount(g)) {
a <- E(g)[.from(i)]
expect_that(length(a), is_equivalent_to(length(el1[[i]])))
expect_that(sort(el1[[i]]), is_equivalent_to(sort(a)))
}
for (i in 1:vcount(g)) {
a <- E(g)[.to(i)]
expect_that(length(a), is_equivalent_to(length(el2[[i]])))
expect_that(sort(el2[[i]]), is_equivalent_to(sort(a)))
}
})
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