```
context("Path overlaps")
test_that("we can compute the overlap between paths.", {
leaves <- c("A", "B", "C")
inner_nodes <- c("AC", "BC", "ABC")
edges <- matrix(ncol = 2, byrow=TRUE,
data = c("A", "AC",
"B", "BC",
"C", "AC", "C", "BC",
"AC", "ABC",
"BC", "ABC"))
admixture_proportions <- matrix(ncol = 3, byrow=TRUE,
data = c("C", "AC", "a", "C", "BC", "(1-a)"))
graph <- agraph(leaves, inner_nodes, edges, admixture_proportions)
AB_paths <- all_paths(graph, "A", "B")
CB_paths <- all_paths(graph, "C", "B")
expect_equal(length(AB_paths), 1)
expect_equal(length(CB_paths), 2)
overlaps1 <- path_overlap(AB_paths[[1]], CB_paths[[1]])
overlaps2 <- path_overlap(AB_paths[[1]], CB_paths[[2]])
expect_equal(overlaps1$prob, c("a"))
expect_equal(nrow(overlaps1$positive), 3)
expect_equal(overlaps1$positive$from, c("ABC", "AC", "BC"))
expect_equal(overlaps1$positive$to, c("BC", "ABC", "B"))
expect_equal(nrow(overlaps1$negative), 0)
expect_equal(overlaps2$prob, c("(1-a)"))
expect_equal(nrow(overlaps2$positive), 1)
expect_equal(overlaps2$positive$from, c("BC"))
expect_equal(overlaps2$positive$to, c("B"))
expect_equal(nrow(overlaps2$negative), 0)
all_overlaps <- all_path_overlaps(AB_paths, CB_paths)
expect_equal(all_overlaps[[1]], overlaps1)
expect_equal(all_overlaps[[2]], overlaps2)
})
```

Embedding an R snippet on your website

Add the following code to your website.

For more information on customizing the embed code, read Embedding Snippets.