context("Prefix sum tree") test_that("Prefix sum tree works", { library(igraph) set.seed(42) mysample <- function(x, size, prob=NULL) { if (!is.null(prob)) { prob <- as.numeric(prob) } .Call(C_R_igraph_psumtree_draw, as.integer(x), as.integer(size), prob) } S <- mysample(100, 10000) expect_that(range(table(S)), equals(c(69, 129))) S2 <- mysample(100, 10000, rep(1:2, each=50)) expect_that(range(table(S2)[1:50]), equals(c(45, 85))) expect_that(range(table(S2)[51:100]), equals(c(103, 160))) })
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