context("graph.subisomorphic.vf2")
test_that("graph.subisomorphic.vf2 works", {
library(igraph)
set.seed(42)
g1 <- sample_gnp(20,6/20)
g2 <- sample_gnp(20,6/20)
g <- g1 %du% g2
ig1 <- graph.subisomorphic.vf2(g, g1)
ig2 <- graph.subisomorphic.vf2(g, g2)
expect_true(ig1$iso)
expect_that(ig1$map12, equals(c(1:vcount(g1), rep(0, vcount(g2)))))
expect_that(ig1$map21, equals(1:vcount(g1)))
expect_true(ig2$iso)
expect_that(ig2$map12, equals(c(rep(0, vcount(g1)), 1:vcount(g2))))
expect_that(ig2$map21, equals(1:vcount(g2) + vcount(g1)))
})
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