Nothing
test_that("ids change when updating the graph", {
g <- make_ring(10)
g2 <- g + 1
g3 <- g + edge(1, 5)
g4 <- set_vertex_attr(g, "color", value = "red")
expect_false(graph_id(g) == graph_id(g2))
expect_false(graph_id(g) == graph_id(g3))
})
test_that("ids don't change when attributes change", {
g <- make_ring(10)
V(g)$color <- "green"
E(g)$weight <- 1
g2 <- set_vertex_attr(g, "color", value = "red")
g3 <- set_edge_attr(g, "weight", value = 3)
g4 <- set_vertex_attr(g, "name", value = LETTERS[1:10])
g5 <- set_edge_attr(g, "name", value = LETTERS[1:10])
expect_equal(graph_id(g), graph_id(g2))
expect_equal(graph_id(g), graph_id(g3))
expect_equal(graph_id(g), graph_id(g4))
expect_equal(graph_id(g), graph_id(g5))
})
test_that("ids of vertex and edge sequences are correct", {
g <- make_ring(10)
vs <- V(g)
vs2 <- vs[1:5]
es <- E(g)
es2 <- es[1:5]
expect_equal(graph_id(g), graph_id(vs))
expect_equal(graph_id(g), graph_id(vs2))
expect_equal(graph_id(g), graph_id(es))
expect_equal(graph_id(g), graph_id(es2))
})
test_that("ids of vertex and edge sequence remain after removing graph", {
g <- make_ring(10)
id <- graph_id(g)
vs <- V(g)
vs2 <- vs[1:5]
es <- E(g)
es2 <- es[1:5]
rm(g)
gc()
expect_equal(id, graph_id(vs))
expect_equal(id, graph_id(vs2))
expect_equal(id, graph_id(es))
expect_equal(id, graph_id(es2))
})
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