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84 lines
2.0 KiB
84 lines
2.0 KiB
package hashring
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import (
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// "fmt"
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"testing"
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)
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const (
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node1 = "192.168.1.1"
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node2 = "192.168.1.2"
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node3 = "192.168.1.3"
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)
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func getNodesCount(nodes nodesArray) (int, int, int) {
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node1Count := 0
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node2Count := 0
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node3Count := 0
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for _, node := range nodes {
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if node.nodeKey == node1 {
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node1Count += 1
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}
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if node.nodeKey == node2 {
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node2Count += 1
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}
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if node.nodeKey == node3 {
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node3Count += 1
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}
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}
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return node1Count, node2Count, node3Count
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}
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func TestHash(t *testing.T) {
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nodeWeight := make(map[string]int)
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nodeWeight[node1] = 2
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nodeWeight[node2] = 2
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nodeWeight[node3] = 3
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vitualSpots := 100
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hash := NewHashRing(vitualSpots)
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hash.AddNodes(nodeWeight)
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if hash.GetNode("1") != node3 {
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t.Fatalf("expetcd %v got %v", node3, hash.GetNode("1"))
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}
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if hash.GetNode("2") != node3 {
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t.Fatalf("expetcd %v got %v", node3, hash.GetNode("2"))
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}
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if hash.GetNode("3") != node2 {
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t.Fatalf("expetcd %v got %v", node2, hash.GetNode("3"))
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}
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c1, c2, c3 := getNodesCount(hash.nodes)
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t.Logf("len of nodes is %v after AddNodes node1:%v, node2:%v, node3:%v", len(hash.nodes), c1, c2, c3)
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hash.RemoveNode(node3)
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if hash.GetNode("1") != node1 {
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t.Fatalf("expetcd %v got %v", node1, hash.GetNode("1"))
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}
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if hash.GetNode("2") != node2 {
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t.Fatalf("expetcd %v got %v", node1, hash.GetNode("2"))
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}
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if hash.GetNode("3") != node2 {
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t.Fatalf("expetcd %v got %v", node2, hash.GetNode("3"))
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}
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c1, c2, c3 = getNodesCount(hash.nodes)
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t.Logf("len of nodes is %v after RemoveNode node1:%v, node2:%v, node3:%v", len(hash.nodes), c1, c2, c3)
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hash.AddNode(node3, 3)
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if hash.GetNode("1") != node3 {
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t.Fatalf("expetcd %v got %v", node3, hash.GetNode("1"))
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}
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if hash.GetNode("2") != node3 {
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t.Fatalf("expetcd %v got %v", node3, hash.GetNode("2"))
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}
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if hash.GetNode("3") != node2 {
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t.Fatalf("expetcd %v got %v", node2, hash.GetNode("3"))
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}
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c1, c2, c3 = getNodesCount(hash.nodes)
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t.Logf("len of nodes is %v after AddNode node1:%v, node2:%v, node3:%v", len(hash.nodes), c1, c2, c3)
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}
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