/usr/lib/R/site-library/igraph/tests/test_unfold.tree.R is in r-cran-igraph 0.7.1-1.
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1 2 3 4 5 6 7 8 9 10 11 12 13 | context("unfold.tree")
test_that("unfold.tree works", {
library(igraph)
g <- graph.tree(7, 2)
g <- add.edges(g, c(2,7, 1,4))
g2 <- unfold.tree(g, roots=1)
expect_that(graph.isomorphic(g2$tree, graph(c(1,2, 1,3, 2,8, 2,5, 3,6,
3,9, 2,7, 1,4))), is_true())
expect_that(g2$vertex_index, equals(c(1,2,3,4,5,6,7,4,7)))
})
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