File: test_callbacks.R

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r-cran-igraph 1.0.1-1%2Bdeb9u1
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context("igraph callbacks in R")

test_that("igraph calls from callbacks are not allowed", {

  library(igraph)
  f <- function(graph, data, extra) { vcount(graph) }
  expect_that(bfs(make_ring(10), root=1, callback=f),
              throws_error("igraph callbacks cannot call igraph functions"))
})