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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