test_that("it works on directed graph with 2 components, in the presence of weights", {
adj <- matrix(
c(
0, 2, 0, 0, 0,
0, 0, 0, 0, 0,
0, 0, 0, 3, 1,
0, 0, 1, 0, 1,
0, 0, 0, 0, 0
),
nrow = 5
)
g <- igraph::graph_from_adjacency_matrix(adj, weighted = TRUE)
expect_silent(
r <- layout_with_stress(g, weights = igraph::E(g)$weight)
)
expect_is(r, "matrix")
})
test_that("it works on directed connected graph", {
g <- igraph::make_graph(~ a - +b + -+c - +d:e:f)
expect_silent(
r <- layout_with_stress(g)
)
expect_is(r, "matrix")
})
test_that("it works on undirected connected graph", {
g <- igraph::make_graph(~ a - -b - -c - -d:e:f)
expect_silent(
r <- layout_with_stress(g)
)
expect_is(r, "matrix")
})
test_that("it works on undirected connected weighted graph", {
g <- igraph::make_graph(~ a - -b - -c - -d:e:f)
igraph::E(g)$weight <- c(1, 2, 3, 4, 5)
expect_silent(
r <- layout_with_stress(g, weights = NULL)
)
expect_is(r, "matrix")
})
test_that("it works on an isolates", {
g <- igraph::make_graph(~a)
expect_silent(
r <- layout_with_stress(g)
)
expect_is(r, "matrix")
})
test_that("it works on a graph of 5 isolates", {
g <- igraph::make_graph(~a, b, c, d, e)
expect_silent(
r <- layout_with_stress(g)
)
expect_is(r, "matrix")
})
test_that("it works on an undirected graph of two connected dyads", {
g <- igraph::make_graph(~ a - -b, c - -d)
expect_silent(
r <- layout_with_stress(g)
)
expect_is(r, "matrix")
})
test_that("it works on an undirected graph of two connected dyads with 5 isolates", {
g <- igraph::make_graph(~ a - -b, c - -d, e, f, g, h, i)
expect_silent(
r <- layout_with_stress(g)
)
expect_is(r, "matrix")
})
context("Test layout_with_stress3D() on connected graphs")
test_that("that works on directed graph with 2 components, in the presence of weights", {
adj <- matrix(
c(
0, 2, 0, 0, 0,
0, 0, 0, 0, 0,
0, 0, 0, 3, 1,
0, 0, 1, 0, 1,
0, 0, 0, 0, 0
),
nrow = 5
)
g <- igraph::graph_from_adjacency_matrix(adj, weighted = TRUE)
expect_silent(
r <- layout_with_stress3D(g, weights = igraph::E(g)$weight)
)
expect_is(r, "matrix")
})
test_that("it works on directed connected graph", {
g <- igraph::make_graph(~ a - +b + -+c - +d:e:f)
expect_silent(
r <- layout_with_stress3D(g)
)
expect_is(r, "matrix")
})
test_that("it works on undirected connected weighted graph", {
g <- igraph::make_graph(~ a - -b - -c - -d:e:f)
igraph::E(g)$weight <- c(1, 2, 3, 4, 5)
expect_silent(
r <- layout_with_stress3D(g, weights = NULL)
)
expect_is(r, "matrix")
})
test_that("it works on undirected connected graph", {
g <- igraph::make_graph(~ a - -b - -c - -d:e:f)
expect_silent(
r <- layout_with_stress3D(g)
)
expect_is(r, "matrix")
})
test_that("it works on undirected disconnected graph", {
g <- igraph::graph.full(5) + igraph::graph.full(5)
expect_silent(
r <- layout_with_stress(g)
)
expect_is(r, "matrix")
})
context("layout_with_stress3D() works on disconnected graphs")
test_that("it works on an isolate", {
g <- igraph::make_graph(~a)
expect_silent(
r <- layout_with_stress(g)
)
expect_is(r, "matrix")
})
test_that("it works on a graph of 5 isolates", {
g <- igraph::make_graph(~a, b, c, d, e)
expect_silent(
r <- layout_with_stress3D(g)
)
expect_is(r, "matrix")
})
test_that("it works on an undirected graph of two connected dyads", {
g <- igraph::make_graph(~ a - -b, c - -d)
expect_silent(
r <- layout_with_stress3D(g)
)
expect_is(r, "matrix")
})
test_that("it works on an undirected graph of two connected dyads with 5 isolates", {
g <- igraph::make_graph(~ a - -b, c - -d, e, f, g, h, i)
expect_silent(
r <- layout_with_stress3D(g)
)
expect_is(r, "matrix")
})
test_that("it works on undirected disconnected graph", {
g <- igraph::graph.full(5) + igraph::graph.full(5)
expect_silent(
r <- layout_with_stress3D(g)
)
expect_is(r, "matrix")
})
context("Test layout_with_focus() on connected graphs")
test_that("it works on undirected connected graphs", {
g <- igraph::make_star(5, mode = "undirected", center = 1)
expect_error(layout_with_focus(g))
expect_silent(
r <- layout_with_focus(g, v = 1)$xy
)
expect_is(r, "matrix")
})
test_that("it fails for disconnected graphs", {
expect_error(layout_with_focus(igraph::graph.empty(n = 10, directed = FALSE)))
})
context("Test layout_with_centrality() on connected graphs")
test_that("it works on undirected connected graphs", {
g <- igraph::make_star(5, mode = "undirected", center = 1)
expect_error(layout_with_centrality(g))
expect_silent(
r <- layout_with_centrality(g, cent = igraph::degree(g))
)
expect_is(r, "matrix")
})
test_that("it fails for disconnected graphs", {
expect_error(layout_with_centrality(igraph::graph.empty(n = 10, directed = FALSE)))
})
context("Test layout_with_constrained_stress()")
test_that("it works on undirected connected graph", {
g <- igraph::make_graph(~ a - -b - -c - -d:e:f)
expect_error(layout_with_constrained_stress(g))
expect_silent(
r <- layout_with_constrained_stress(g, coord = rep(1, 6))
)
expect_is(r, "matrix")
})
test_that("it works on undirected disconnected graph", {
g <- igraph::make_full_graph(5) + igraph::make_full_graph(5)
fix <- rep(c(1, 2), each = 5)
expect_silent(
r <- layout_with_constrained_stress(g, coord = fix)
)
expect_is(r, "matrix")
expect_true(all(r[, 1] == fix))
})
context("Test layout_with_constrained_stress3D() on connected graphs")
test_that("it works on undirected connected graph", {
g <- igraph::make_graph(~ a - -b - -c - -d:e:f)
expect_error(layout_with_constrained_stress3D(g))
expect_silent(
r <- layout_with_constrained_stress3D(g, coord = rep(1, 6))
)
expect_is(r, "matrix")
})
test_that("it works on undirected disconnected graph", {
g <- igraph::make_full_graph(5) + igraph::make_full_graph(5)
fix <- rep(c(1, 2), each = 5)
expect_silent(
r <- layout_with_constrained_stress3D(g, coord = fix)
)
expect_is(r, "matrix")
expect_true(all(r[, 1] == fix))
})
context("Test layout_with_*_grouped()")
test_that("grouped layouts work", {
g <- igraph::graph.full(10)
grp <- rep(c(1, 2), each = 5)
expect_is(layout_with_focus_group(g, v = 1, grp), "matrix")
g <- igraph::graph.star(10)
grp <- rep(c(1, 2), each = 5)
expect_is(layout_with_centrality_group(g, cent = igraph::degree(g), grp), "matrix")
})
test_that("test errors in stress layouts", {
expect_error(layout_with_stress(5))
expect_error(layout_with_constrained_stress(5))
expect_error(layout_with_stress3D(5))
expect_error(layout_with_focus(5))
expect_error(layout_with_focus(igraph::graph.full(5)))
expect_error(layout_with_centrality(igraph::graph.full(5)))
expect_error(layout_with_constrained_stress(igraph::graph.full(5), fixdim = "z"))
expect_error(layout_with_constrained_stress(igraph::graph.full(5), fixdim = "x"))
expect_error(layout_with_focus_group(igraph::graph.full(5)))
expect_error(layout_with_centrality_group(igraph::graph.full(5)))
expect_error(layout_with_focus_group(igraph::graph.full(5), v = 2))
expect_error(layout_with_centrality_group(igraph::graph.full(5), cent = igraph::degree(g)))
})
test_that("layout_with_fixed_nodes works", {
set.seed(12)
g <- sample_bipartite(10, 5, "gnp", 0.5)
fxy <- cbind(c(rep(0, 10), rep(1, 5)), NA)
expect_silent(
r <- layout_with_fixed_coords(g, fxy)
)
expect_is(r, "matrix")
expect_error(layout_with_fixed_coords(g))
expect_warning(layout_with_fixed_coords(g, matrix(1, 15, 2)))
expect_error(layout_with_fixed_coords(g, matrix(1, 12, 2)))
})
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