rustc-ap-rustc_data_structures 675.0.0

Automatically published version of the package `rustc_data_structures` in the rust-lang/rust repository from commit c30341ddec0b99bb3bd8bb5fd8c8451778c78330 The publishing script for this crate lives at: https://github.com/alexcrichton/rustc-auto-publish
Documentation 
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use super::super::tests::TestGraph;

use super::*;

#[test]
fn diamond_post_order() {
    let graph = TestGraph::new(0, &[(0, 1), (0, 2), (1, 3), (2, 3)]);

    let result = post_order_from(&graph, 0);
    assert_eq!(result, vec![3, 1, 2, 0]);
}

#[test]
fn is_cyclic() {
    use super::super::is_cyclic;

    let diamond_acyclic = TestGraph::new(0, &[(0, 1), (0, 2), (1, 3), (2, 3)]);
    let diamond_cyclic = TestGraph::new(0, &[(0, 1), (1, 2), (2, 3), (3, 0)]);

    assert!(!is_cyclic(&diamond_acyclic));
    assert!(is_cyclic(&diamond_cyclic));
}