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// Copyright 2018 The dexon-consensus Authors
// This file is part of the dexon-consensus library.
//
// The dexon-consensus library is free software: you can redistribute it
// and/or modify it under the terms of the GNU Lesser General Public License as
// published by the Free Software Foundation, either version 3 of the License,
// or (at your option) any later version.
//
// The dexon-consensus library is distributed in the hope that it will be
// useful, but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser
// General Public License for more details.
//
// You should have received a copy of the GNU Lesser General Public License
// along with the dexon-consensus library. If not, see
// <http://www.gnu.org/licenses/>.
package types
import (
"testing"
"github.com/dexon-foundation/dexon-consensus/common"
"github.com/stretchr/testify/suite"
)
type NodeSetTestSuite struct {
suite.Suite
}
func (s *NodeSetTestSuite) TestGetSubSet() {
total := 10
crs := common.NewRandomHash()
nodes := NewNodeSet()
for len(nodes.IDs) < total {
nodes.IDs[NodeID{common.NewRandomHash()}] = struct{}{}
}
target := NewNotarySetTarget(crs, 0)
ranks := make(map[NodeID]*nodeRank, len(nodes.IDs))
for nID := range nodes.IDs {
ranks[nID] = newNodeRank(nID, target)
}
size := 4
notarySet := nodes.GetSubSet(size, target)
for notary := range notarySet {
win := 0
rank := ranks[notary].rank
for node := range nodes.IDs {
if rank.Cmp(ranks[node].rank) < 0 {
win++
}
}
s.True(win >= total-size)
}
}
func (s *NodeSetTestSuite) TestGetSubSetZeroSize() {
total := 10
nodes := NewNodeSet()
for len(nodes.IDs) < total {
nodes.IDs[NodeID{common.NewRandomHash()}] = struct{}{}
}
// Passing nil should not crash.
emptySet := nodes.GetSubSet(0, nil)
s.Len(emptySet, 0)
}
func TestNodeSet(t *testing.T) {
suite.Run(t, new(NodeSetTestSuite))
}
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