Error in `upgrade_graph(karate)`: igraph object is too old to upgrade.

expect_equal(vp$resverts, c(1, 6, 10, 11, 5))
test_that("convex_hull uses 1-based indexing, #613", {
expect_equal(vp$resverts, c(8, 10, 7, 2, 1))
test_that("can create graphs when igraph is not attached", {
expect_equal(running_mean(1:10, 2), 2:10 - 0.5)
test_that("R help contains guarantee on number of RNG bits", {
get_help_file <- get(".getHelpFile", envir = asNamespace("utils"))
"Mr Hi", "Actor 2", "Actor 3", "Actor 4",
"Actor 5", "Actor 6", "Actor 7", "Actor 8", "Actor 9", "Actor 10",
"Actor 11", "Actor 12", "Actor 13", "Actor 14", "Actor 15", "Actor 16",
"Actor 17", "Actor 18", "Actor 19", "Actor 20", "Actor 21", "Actor 22",
"Actor 23", "Actor 24", "Actor 25", "Actor 26", "Actor 27", "Actor 28",
"Actor 29", "Actor 30", "Actor 31", "Actor 32", "Actor 33", "John A"
Citation = "Wayne W. Zachary. An Information Flow Model for Conflict and Fission in Small Groups. Journal of Anthropological Research Vol. 33, No. 4 452-473",
.Names = c("name", "Citation", "Author")
test_that("VS/ES require explicit conversion", {
test_that("VS/ES work with old data type", {

"convex_hull uses 1-based indexing, #613"
"can create graphs when igraph is not attached"
"R help contains guarantee on number of RNG bits"
"Wayne W. Zachary. An Information Flow Model for Conflict and Fission in Small Groups. Journal of Anthropological Research Vol. 33, No. 4 452-473"

Error in `upgrade_graph(g)`: igraph object is too old to upgrade.

test_that("we create graphs of the current version", {
test_that("we can't upgrade from 0.1.1 to 1.5.0, on the fly", {
test_that("we can't upgrade from 0.1.1 to 1.5.0, explicitly", {
test_that("we can't upgrade from 0.2 to 1.5.0, on the fly", {
test_that("we can upgrade from 0.2 to 1.5.0, explicitly", {
test_that("we can't upgrade from 0.5 to 1.5.0, on the fly", {
test_that("we can upgrade from 0.5 to 1.5.0, explicitly", {
test_that("we can't upgrade from 0.6 to 1.5.0, on the fly", {
test_that("we can upgrade from 0.6 to 1.5.0, explicitly", {
test_that("we can upgrade from 1.0.0 to 1.5.0, on the fly", {
test_that("we can upgrade from 1.0.0 to 1.5.0, explicitly", {
test_that("reading of old igraph formats", {
test_that("igraph_version returns a version string", {
## This is essentially a semver regex, we do not allow a