mirror of
https://github.com/schollz/cowyo.git
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45 lines
742 B
Go
45 lines
742 B
Go
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package txn
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import (
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"fmt"
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"gopkg.in/mgo.v2/bson"
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. "gopkg.in/check.v1"
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)
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type TarjanSuite struct{}
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var _ = Suite(TarjanSuite{})
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func bid(n int) bson.ObjectId {
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return bson.ObjectId(fmt.Sprintf("%024d", n))
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}
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func bids(ns ...int) (ids []bson.ObjectId) {
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for _, n := range ns {
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ids = append(ids, bid(n))
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}
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return
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}
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func (TarjanSuite) TestExample(c *C) {
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successors := map[bson.ObjectId][]bson.ObjectId{
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bid(1): bids(2, 3),
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bid(2): bids(1, 5),
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bid(3): bids(4),
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bid(4): bids(3, 5),
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bid(5): bids(6),
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bid(6): bids(7),
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bid(7): bids(8),
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bid(8): bids(6, 9),
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bid(9): bids(),
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}
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c.Assert(tarjanSort(successors), DeepEquals, [][]bson.ObjectId{
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bids(9),
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bids(6, 7, 8),
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bids(5),
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bids(3, 4),
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bids(1, 2),
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})
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}
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