Nothing
test_that("are_adjacent works", {
g <- graph_from_literal(A - B - C, B - D)
expect_true(are_adjacent(g, "A", "B"))
expect_true(are_adjacent(g, "B", "A"))
expect_false(are_adjacent(g, "A", "D"))
g2 <- make_graph(c(1, 2, 2, 3, 3, 4), dir = FALSE)
expect_true(are_adjacent(g2, 1, 2))
expect_true(are_adjacent(g2, 3, 2))
expect_false(are_adjacent(g2, 4, 1))
g3 <- graph_from_literal(A -+ B -+ C, B -+ D)
expect_false(are_adjacent(g3, "A", "C"))
expect_true(are_adjacent(g3, "A", "B"))
expect_false(are_adjacent(g3, "B", "A"))
})
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