Nothing
test_that("make_graph works", {
g <- make_graph(1:10)
g2 <- make_empty_graph(n = 10) + edges(1:10)
expect_true(identical_graphs(g, g2))
})
test_that("make_graph accepts an empty vector or NULL", {
g <- make_graph(c())
g2 <- make_empty_graph(n = 0)
expect_true(identical_graphs(g, g2))
g <- make_graph(NULL, n = NULL)
expect_true(identical_graphs(g, g2))
g <- make_graph(edges = c(), n = NULL)
expect_true(identical_graphs(g, g2))
})
test_that("make_graph works for numeric edges and isolates", {
g <- make_graph(1:10, n = 20)
g2 <- make_empty_graph(n = 20) + edges(1:10)
expect_true(identical_graphs(g, g2))
})
test_that("make_graph handles names", {
g <- make_graph(letters[1:10])
g2 <- make_empty_graph() + vertices(letters[1:10]) + edges(letters[1:10])
expect_true(identical_graphs(g, g2))
})
test_that("make_graph handles names and isolates", {
g <- make_graph(letters[1:10], isolates = letters[11:20])
g2 <- make_empty_graph() + vertices(letters[1:20]) + edges(letters[1:10])
expect_true(identical_graphs(g, g2))
})
test_that("make_graph gives warning for ignored arguments", {
expect_warning(
make_graph(letters[1:10], n = 10)
)
expect_warning(
make_graph(1:10, isolates = 11:12)
)
})
test_that("a make_graph bug is fixed", {
E <- cbind(1, 3)
d <- 3
g <- make_graph(as.vector(t(E)), d, FALSE)
expect_equal(vcount(g), 3)
expect_equal(ecount(g), 1)
})
test_that("make_empty_graph gives an error for invalid arguments", {
expect_error(make_empty_graph(NULL))
expect_error(make_empty_graph("spam"))
})
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