context("unfold_tree")
test_that("unfold_tree works", {
library(igraph)
g <- make_tree(7, 2)
g <- add_edges(g, c(2,7, 1,4))
g2 <- unfold_tree(g, roots=1)
expect_true(graph.isomorphic(g2$tree, graph(c(1,2, 1,3, 2,8, 2,5, 3,6,
3,9, 2,7, 1,4))))
expect_that(g2$vertex_index, equals(c(1,2,3,4,5,6,7,4,7)))
})
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