github.com/nspcc-dev/neo-go@v0.105.2-0.20240517133400-6be757af3eba/pkg/crypto/hash/merkle_tree_test.go (about)

     1  package hash
     2  
     3  import (
     4  	"testing"
     5  
     6  	"github.com/nspcc-dev/neo-go/pkg/util"
     7  	"github.com/stretchr/testify/assert"
     8  	"github.com/stretchr/testify/require"
     9  )
    10  
    11  func testComputeMerkleTree(t *testing.T, hexHashes []string, result string) {
    12  	hashes := make([]util.Uint256, len(hexHashes))
    13  	for i, str := range hexHashes {
    14  		hash, err := util.Uint256DecodeStringLE(str)
    15  		require.NoError(t, err)
    16  		hashes[i] = hash
    17  	}
    18  
    19  	merkle, err := NewMerkleTree(hashes)
    20  	require.NoError(t, err)
    21  	optimized := CalcMerkleRoot(hashes)
    22  	assert.Equal(t, result, optimized.StringLE())
    23  	assert.Equal(t, result, merkle.Root().StringLE())
    24  	assert.Equal(t, true, merkle.root.IsRoot())
    25  	assert.Equal(t, false, merkle.root.IsLeaf())
    26  	leaf := merkle.root
    27  	for leaf.leftChild != nil || leaf.rightChild != nil {
    28  		if leaf.leftChild != nil {
    29  			leaf = leaf.leftChild
    30  			continue
    31  		}
    32  		leaf = leaf.rightChild
    33  	}
    34  	assert.Equal(t, true, leaf.IsLeaf())
    35  	assert.Equal(t, false, leaf.IsRoot())
    36  }
    37  
    38  func TestComputeMerkleTree1(t *testing.T) {
    39  	// Mainnet block #0
    40  	rawHashes := []string{
    41  		"fb5bd72b2d6792d75dc2f1084ffa9e9f70ca85543c717a6b13d9959b452a57d6",
    42  		"c56f33fc6ecfcd0c225c4ab356fee59390af8560be0e930faebe74a6daff7c9b",
    43  		"602c79718b16e442de58778e148d0b1084e3b2dffd5de6b7b16cee7969282de7",
    44  		"3631f66024ca6f5b033d7e0809eb993443374830025af904fb51b0334f127cda",
    45  	}
    46  	res := "803ff4abe3ea6533bcc0be574efa02f83ae8fdc651c879056b0d9be336c01bf4"
    47  	testComputeMerkleTree(t, rawHashes, res)
    48  }
    49  
    50  func TestComputeMerkleTree2(t *testing.T) {
    51  	// Mainnet block #4635525
    52  	rawHashes := []string{
    53  		"c832ef573136eae2c57a35989d3fb9b3a135d08ffa0faa49d8766f7c1a92ca0f",
    54  		"b8606dfeb126a5963d6674f8dbfb786db7f6c27800167c3eef56ff7110ff0ffc",
    55  		"498a5d58179002dd9db7b23df657ecf7e1b2e8218bd48dda035e5accc664830a",
    56  		"5c350282b448c139adb1f5e3fba0e9326476a38c01ea88876ebc4a882c472d42",
    57  		"cea31cc85e7310183561d4f420026984ba48354516f9274c44b52c7f9a5c6107",
    58  		"744f985dd5ad6f4ad6376376b48552abf7755b2ebc5c6271950714f848d1cc3a",
    59  		"02c5fc225b6ead91f73a7b3ebb19bb30a113baea60f439b654c2811d630a2c48",
    60  		"2b3478e0fa91db3a309caeb4d9739f38233c1c189d6fa7e159e24afce9fae082",
    61  		"4d50693cee3ac2c976c092620834d4da264583cf15a1d11dd65d0e94861d49e0",
    62  		"5f179efae999f8f8086269cedd1fbfaf6e90aadf5369a12737db0fff5905b12e",
    63  		"6ef2237b6c8683f626269027050c45cc4be89042ee99e4e89bfd9d9fbd24da19",
    64  		"6fd5154af55b4a1e4a1a5272e33238b2a2da12a30fa06af4f740d207e54ed495",
    65  	}
    66  	res := "42489ad8043a834149cd8e406c90c61411a05a0ca9f8e921b456a00b5d5988d7"
    67  	testComputeMerkleTree(t, rawHashes, res)
    68  }
    69  
    70  func TestComputeMerkleTree3(t *testing.T) {
    71  	// Mainnet block #2097152
    72  	rawHashes := []string{
    73  		"a7ff2c6aa08d4b979d5f7605aec5a1783c9207c738b5852ed5ff17b37ada649d",
    74  		"34fd42c1f47aa306ad2fd0fc04437fd5c828a25b3de59e73b18157253094a8da",
    75  		"36458dffd678d9f75ed9f2a28beb58bf1ad739f8899469b8641b0ddea22fcf5d",
    76  		"3e8144abe2edda263593f24defd4557d403efa1b4fa839409ac217d6f8a87d3a",
    77  		"a1d2cf73841fefcd21ca9986c664518d2af61edcfe3a97b30b3cc58fab4e61f6",
    78  		"c1e868aef0e8fd76b95a18e155b1fa65f30d0a4887bc953411553728664725bc",
    79  		"52d2fda0fe0fd586063d801c5ba77ca123a790d7e4dae34c53398feab36da721",
    80  		"fdf8d4610cb2de35ab4c18d38357b86c52966d149c8975906170dc513cc26345",
    81  		"35a26a11ef65d8f7a2424f7ce5915aa1d8bf3449018516003799767c2696197e",
    82  		"c9d251abfc20a0d6eeac2d5a93b77a6a0632a679a07decea2c809aead89bb503",
    83  		"d92c72873f2929c621ec06433da3053db25ee396b70c83d53abd40801823f66c",
    84  	}
    85  	res := "09c2dbc88810c350a2e7ace56bb1b371b2a2b5c4744e7a303adace9a2c2bbf6d"
    86  	testComputeMerkleTree(t, rawHashes, res)
    87  }
    88  
    89  func TestNewMerkleTreeFailWithoutHashes(t *testing.T) {
    90  	var hashes []util.Uint256
    91  	_, err := NewMerkleTree(hashes)
    92  	require.Error(t, err)
    93  	hashes = make([]util.Uint256, 0)
    94  	_, err = NewMerkleTree(hashes)
    95  	require.Error(t, err)
    96  }
    97  
    98  func TestBuildMerkleTreeWithoutNodes(t *testing.T) {
    99  	var leaves []*MerkleTreeNode
   100  	require.Panics(t, func() { buildMerkleTree(leaves) })
   101  	leaves = make([]*MerkleTreeNode, 0)
   102  	require.Panics(t, func() { buildMerkleTree(leaves) })
   103  }