Nothing
test_that("add_vertices works", {
g <- graph_from_literal(A - B - C - D - E)
g2 <- add_vertices(g, (nv <- 4))
expect_that(vcount(g2), equals(vcount(g) + nv))
expect_that(ecount(g2), equals(ecount(g)))
expect_that(as_edgelist(g2), equals(as_edgelist(g)))
})
test_that("add_vertices handles attributes properly", {
g <- graph_from_literal(A - B - C - D - E)
g3 <- add_vertices(g, (nv <- 3),
attr = list(
name = (names <- c("F", "G", "H")),
weight = weights <- 1:3
)
)
expect_that(V(g3)$name, equals(c(V(g)$name, names)))
expect_that(V(g3)$weight, equals(c(rep(NA, vcount(g)), weights)))
})
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