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Merge pull request #1336 from rinconjc/1321

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Fix #1321 tsort handle self-loops
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Alex Lyon 2019-04-05 19:15:23 -07:00 • committed by GitHub
commit dbc9527b00
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2 changed files with 8 additions and 1 deletions
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2
src/tsort/tsort.rs Normal file → Executable file
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@ -149,7 +149,7 @@ impl Graph {
self.init_node(from); self.init_node(from);
} }
if !self.has_edge(from, to) { if from != to && !self.has_edge(from, to) {
self.in_edges.get_mut(to).unwrap().insert(from.clone()); self.in_edges.get_mut(to).unwrap().insert(from.clone());
self.out_edges.get_mut(from).unwrap().push(to.clone()); self.out_edges.get_mut(from).unwrap().push(to.clone());
} }

7
tests/test_tsort.rs
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@ -8,3 +8,10 @@ fn test_sort_call_graph() {
.run() .run()
.stdout_is_fixture("call_graph.expected"); .stdout_is_fixture("call_graph.expected");
} }
#[test]
fn test_sort_self_loop() {
new_ucmd!()
.pipe_in("first first\nfirst second second second")
.succeeds().stdout_only("first\nsecond\n");
}