blockchain_go/merkle_tree_test.go

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1.5 KiB
Go
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2017-09-18 00:45:58 -05:00
package main
import (
"encoding/hex"
"fmt"
"testing"
"github.com/stretchr/testify/assert"
)
func TestNewMerkleNode(t *testing.T) {
data := [][]byte{
[]byte("node1"),
[]byte("node2"),
[]byte("node3"),
}
// Level 1
n1 := NewMerkleNode(nil, nil, data[0])
n2 := NewMerkleNode(nil, nil, data[1])
n3 := NewMerkleNode(nil, nil, data[2])
n4 := NewMerkleNode(nil, nil, data[2])
// Level 2
n5 := NewMerkleNode(n1, n2, nil)
n6 := NewMerkleNode(n3, n4, nil)
// Level 3
n7 := NewMerkleNode(n5, n6, nil)
assert.Equal(
t,
"64b04b718d8b7c5b6fd17f7ec221945c034cfce3be4118da33244966150c4bd4",
hex.EncodeToString(n5.Data),
"Level 1 hash 1 is correct",
)
assert.Equal(
t,
"08bd0d1426f87a78bfc2f0b13eccdf6f5b58dac6b37a7b9441c1a2fab415d76c",
hex.EncodeToString(n6.Data),
"Level 1 hash 2 is correct",
)
assert.Equal(
t,
"4e3e44e55926330ab6c31892f980f8bfd1a6e910ff1ebc3f778211377f35227e",
hex.EncodeToString(n7.Data),
"Root hash is correct",
)
}
func TestNewMerkleTree(t *testing.T) {
data := [][]byte{
[]byte("node1"),
[]byte("node2"),
[]byte("node3"),
}
// Level 1
n1 := NewMerkleNode(nil, nil, data[0])
n2 := NewMerkleNode(nil, nil, data[1])
n3 := NewMerkleNode(nil, nil, data[2])
n4 := NewMerkleNode(nil, nil, data[2])
// Level 2
n5 := NewMerkleNode(n1, n2, nil)
n6 := NewMerkleNode(n3, n4, nil)
// Level 3
n7 := NewMerkleNode(n5, n6, nil)
rootHash := fmt.Sprintf("%x", n7.Data)
mTree := NewMerkleTree(data)
assert.Equal(t, rootHash, fmt.Sprintf("%x", mTree.RootNode.Data), "Merkle tree root hash is correct")
}