47 lines
1.4 KiB
Go
47 lines
1.4 KiB
Go
package peers
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import (
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"net"
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"testing"
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"github.com/ethereum/go-ethereum/p2p/discv5"
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"github.com/stretchr/testify/assert"
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"github.com/stretchr/testify/require"
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"github.com/syndtr/goleveldb/leveldb"
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"github.com/syndtr/goleveldb/leveldb/storage"
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)
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// newInMemoryCache creates a cache for tests
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func newInMemoryCache() (*Cache, error) {
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memdb, err := leveldb.Open(storage.NewMemStorage(), nil)
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if err != nil {
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return nil, err
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}
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return NewCache(memdb), nil
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}
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func TestPeersRange(t *testing.T) {
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peersDB, err := newInMemoryCache()
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require.NoError(t, err)
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topic := discv5.Topic("test")
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peers := [3]*discv5.Node{
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discv5.NewNode(discv5.NodeID{3}, net.IPv4(100, 100, 0, 3), 32311, 32311),
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discv5.NewNode(discv5.NodeID{4}, net.IPv4(100, 100, 0, 4), 32311, 32311),
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discv5.NewNode(discv5.NodeID{2}, net.IPv4(100, 100, 0, 2), 32311, 32311),
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}
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for _, peer := range peers {
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assert.NoError(t, peersDB.AddPeer(peer, topic))
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}
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nodes := peersDB.GetPeersRange(topic, 3)
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require.Len(t, nodes, 3)
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// object will be ordered by memcpy order of bytes 2,3,4 in our case
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// order of tests is intentionally mixed to make it obvious that range is
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// not ordered by the insertion time
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assert.Equal(t, peers[2].String(), nodes[0].String())
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assert.Equal(t, peers[0].String(), nodes[1].String())
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assert.Equal(t, peers[1].String(), nodes[2].String())
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assert.NoError(t, peersDB.RemovePeer(peers[1].ID, topic))
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require.Len(t, peersDB.GetPeersRange(topic, 3), 2)
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}
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