Nothing
test_that("Listing triangles works", {
triangles <- function(...) as.vector(igraph::triangles(...))
g1 <- make_empty_graph(directed = TRUE)
g2 <- make_empty_graph(directed = FALSE)
expect_that(triangles(g1), equals(numeric()))
expect_that(triangles(g2), equals(numeric()))
g3 <- make_empty_graph(n = 1, directed = TRUE)
g4 <- make_empty_graph(n = 1, directed = FALSE)
expect_that(triangles(g3), equals(numeric()))
expect_that(triangles(g4), equals(numeric()))
g5 <- make_empty_graph(n = 100, directed = TRUE)
g6 <- make_empty_graph(n = 100, directed = FALSE)
expect_that(triangles(g5), equals(numeric()))
expect_that(triangles(g6), equals(numeric()))
g7 <- make_ring(3, directed = FALSE)
g8 <- make_ring(3, directed = TRUE)
g9 <- graph_from_literal(A -+ B:C, B -+ C)
expect_that(sort(triangles(g7)), equals(1:3))
expect_that(sort(triangles(g8)), equals(1:3))
expect_that(sort(triangles(g9)), equals(1:3))
g10 <- make_full_graph(5, directed = FALSE)
g11 <- make_full_graph(5, directed = TRUE)
r10 <- c(
1L, 2L, 5L, 1L, 2L, 3L, 1L, 2L, 4L, 1L, 3L, 5L, 1L, 3L, 4L,
1L, 4L, 5L, 2L, 3L, 5L, 2L, 3L, 4L, 2L, 4L, 5L, 3L, 4L, 5L
)
r11 <- r10
expect_that(triangles(g10), equals(r10))
expect_that(triangles(g11), equals(r11))
})
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