mirror of
https://github.com/tornadocash/fixed-merkle-tree.git
synced 2024-11-22 01:37:09 +01:00
429 lines
14 KiB
TypeScript
429 lines
14 KiB
TypeScript
import { MerkleTree, PartialMerkleTree, TreeEdge } from '../src'
|
|
import { assert, should } from 'chai'
|
|
import { createHash } from 'crypto'
|
|
import { it } from 'mocha'
|
|
|
|
const sha256Hash = (left, right) => createHash('sha256').update(`${left}${right}`).digest('hex')
|
|
const ZERO_ELEMENT = '21663839004416932945382355908790599225266501822907911457504978515578255421292'
|
|
|
|
describe('MerkleTree', () => {
|
|
|
|
describe('#constructor', () => {
|
|
|
|
it('should have correct zero root', () => {
|
|
const tree = new MerkleTree(10, [])
|
|
return should().equal(tree.root, '3060353338620102847451617558650138132480')
|
|
})
|
|
|
|
it('should have correct 1 element root', () => {
|
|
const tree = new MerkleTree(10, [1])
|
|
should().equal(tree.root, '4059654748770657324723044385589999697920')
|
|
})
|
|
|
|
it('should have correct even elements root', () => {
|
|
const tree = new MerkleTree(10, [1, 2])
|
|
should().equal(tree.root, '3715471817149864798706576217905179918336')
|
|
})
|
|
|
|
it('should have correct odd elements root', () => {
|
|
const tree = new MerkleTree(10, [1, 2, 3])
|
|
should().equal(tree.root, '5199180210167621115778229238102210117632')
|
|
})
|
|
|
|
it('should be able to create a full tree', () => {
|
|
new MerkleTree(2, [1, 2, 3, 4])
|
|
})
|
|
|
|
it('should fail to create tree with too many elements', () => {
|
|
const call = () => new MerkleTree(2, [1, 2, 3, 4, 5])
|
|
should().throw(call, 'Tree is full')
|
|
})
|
|
|
|
it('should work with optional hash function and zero element', () => {
|
|
const tree = new MerkleTree(10, [1, 2, 3, 4, 5, 6], { hashFunction: sha256Hash, zeroElement: 'zero' })
|
|
should().equal(tree.root, 'a377b9fa0ed41add83e56f7e1d0e2ebdb46550b9d8b26b77dece60cb67283f19')
|
|
})
|
|
})
|
|
|
|
describe('#insert', () => {
|
|
it('should insert into empty tree', () => {
|
|
const tree = new MerkleTree(10)
|
|
tree.insert(42)
|
|
should().equal(tree.root, '750572848877730275626358141391262973952')
|
|
})
|
|
|
|
it('should insert into odd tree', () => {
|
|
const tree = new MerkleTree(10, [1])
|
|
tree.insert(42)
|
|
should().equal(tree.root, '5008383558940708447763798816817296703488')
|
|
})
|
|
|
|
it('should insert into even tree', () => {
|
|
const tree = new MerkleTree(10, [1, 2])
|
|
tree.insert(42)
|
|
should().equal(tree.root, '5005864318873356880627322373636156817408')
|
|
})
|
|
|
|
it('should insert last element', () => {
|
|
const tree = new MerkleTree(2, [1, 2, 3])
|
|
tree.insert(4)
|
|
})
|
|
|
|
it('should fail to insert when tree is full', () => {
|
|
const tree = new MerkleTree(2, [1, 2, 3, 4])
|
|
const call = () => tree.insert(5)
|
|
should().throw(call, 'Tree is full')
|
|
})
|
|
})
|
|
|
|
describe('#bulkInsert', () => {
|
|
it('should work', () => {
|
|
const tree = new MerkleTree(10, [1, 2, 3])
|
|
tree.bulkInsert([4, 5, 6])
|
|
should().equal(tree.root, '4066635800770511602067209448381558554624')
|
|
})
|
|
|
|
it('should give the same result as sequential inserts', () => {
|
|
const initialArray = [
|
|
[1],
|
|
[1, 2],
|
|
[1, 2, 3],
|
|
[1, 2, 3, 4],
|
|
]
|
|
const insertedArray = [
|
|
[11],
|
|
[11, 12],
|
|
[11, 12, 13],
|
|
[11, 12, 13, 14],
|
|
]
|
|
for (const initial of initialArray) {
|
|
for (const inserted of insertedArray) {
|
|
const tree1 = new MerkleTree(10, initial)
|
|
const tree2 = new MerkleTree(10, initial)
|
|
tree1.bulkInsert(inserted)
|
|
for (const item of inserted) {
|
|
tree2.insert(item)
|
|
}
|
|
should().equal(tree1.root, tree2.root)
|
|
}
|
|
}
|
|
}).timeout(10000)
|
|
|
|
it('should work with max elements', () => {
|
|
const tree = new MerkleTree(2, [1, 2])
|
|
tree.bulkInsert([3, 4])
|
|
})
|
|
|
|
it('should fail to insert too many elements', () => {
|
|
const tree = new MerkleTree(2, [1, 2])
|
|
const call = () => tree.bulkInsert([3, 4, 5])
|
|
should().throw(call, 'Tree is full')
|
|
})
|
|
|
|
it('should bypass empty elements', () => {
|
|
const elements = [1, 2, 3, 4]
|
|
const tree = new MerkleTree(2, elements)
|
|
tree.bulkInsert([])
|
|
assert.deepEqual(tree.elements, elements, 'No elements inserted')
|
|
})
|
|
})
|
|
|
|
describe('#update', () => {
|
|
it('should update first element', () => {
|
|
const tree = new MerkleTree(10, [1, 2, 3, 4, 5])
|
|
tree.update(0, 42)
|
|
should().equal(tree.root, '3884161948856565981263417078389340635136')
|
|
})
|
|
|
|
it('should update last element', () => {
|
|
const tree = new MerkleTree(10, [1, 2, 3, 4, 5])
|
|
tree.update(4, 42)
|
|
should().equal(tree.root, '3564959811529894228734180300843252711424')
|
|
})
|
|
|
|
it('should update odd element', () => {
|
|
const tree = new MerkleTree(10, [1, 2, 3, 4, 5])
|
|
tree.update(1, 42)
|
|
should().equal(tree.root, '4576704573778433422699674477203122290688')
|
|
})
|
|
|
|
it('should update even element', () => {
|
|
const tree = new MerkleTree(10, [1, 2, 3, 4, 5])
|
|
tree.update(2, 42)
|
|
should().equal(tree.root, '1807994110952186123819489133812038762496')
|
|
})
|
|
|
|
it('should update extra element', () => {
|
|
const tree = new MerkleTree(10, [1, 2, 3, 4])
|
|
tree.update(4, 5)
|
|
should().equal(tree.root, '1099080610107164849381389194938128793600')
|
|
})
|
|
|
|
it('should fail to update incorrect index', () => {
|
|
const tree = new MerkleTree(10, [1, 2, 3, 4, 5])
|
|
should().throw((() => tree.update(-1, 42)), 'Insert index out of bounds: -1')
|
|
should().throw((() => tree.update(6, 42)), 'Insert index out of bounds: 6')
|
|
// @ts-ignore
|
|
should().throw((() => tree.update('qwe', 42)), 'Insert index out of bounds: qwe')
|
|
})
|
|
|
|
it('should fail to update over capacity', () => {
|
|
const tree = new MerkleTree(2, [1, 2, 3, 4])
|
|
const call = () => tree.update(4, 42)
|
|
should().throw(call, 'Insert index out of bounds: 4')
|
|
})
|
|
})
|
|
|
|
describe('#indexOf', () => {
|
|
it('should find index', () => {
|
|
const tree = new MerkleTree(10, [1, 2, 3, 4, 5])
|
|
should().equal(tree.indexOf(3), 2)
|
|
})
|
|
|
|
it('should work with comparator', () => {
|
|
const tree = new MerkleTree(10, [1, 2, 3, 4, 5])
|
|
should().equal(tree.indexOf(4, (arg0, arg1) => arg0 === arg1), 3)
|
|
})
|
|
|
|
it('should return -1 for non existent element', () => {
|
|
const tree = new MerkleTree(10, [1, 2, 3, 4, 5])
|
|
should().equal(tree.indexOf(42), -1)
|
|
})
|
|
})
|
|
|
|
describe('#path', () => {
|
|
it('should work for even index', () => {
|
|
const tree = new MerkleTree(10, [1, 2, 3, 4, 5])
|
|
const path = tree.path(2)
|
|
assert.deepEqual(path.pathIndices, [0, 1, 0, 0, 0, 0, 0, 0, 0, 0])
|
|
assert.deepEqual(path.pathElements, [
|
|
4,
|
|
'4027992409016347597424110157229339967488',
|
|
'3591172241203040147397382471352592629760',
|
|
'938972308169430750202858820582946897920',
|
|
'3743880566844110745576746962917825445888',
|
|
'2074434463882483178614385966084599578624',
|
|
'2808856778596740691845240322870189490176',
|
|
'4986731814143931240516913804278285467648',
|
|
'1918547053077726613961101558405545328640',
|
|
'5444383861051812288142814494928935059456',
|
|
|
|
])
|
|
})
|
|
|
|
it('should work for odd index', () => {
|
|
const tree = new MerkleTree(10, [1, 2, 3, 4, 5])
|
|
const path = tree.path(3)
|
|
assert.deepEqual(path.pathIndices, [1, 1, 0, 0, 0, 0, 0, 0, 0, 0])
|
|
assert.deepEqual(path.pathElements, [
|
|
3,
|
|
'4027992409016347597424110157229339967488',
|
|
'3591172241203040147397382471352592629760',
|
|
'938972308169430750202858820582946897920',
|
|
'3743880566844110745576746962917825445888',
|
|
'2074434463882483178614385966084599578624',
|
|
'2808856778596740691845240322870189490176',
|
|
'4986731814143931240516913804278285467648',
|
|
'1918547053077726613961101558405545328640',
|
|
'5444383861051812288142814494928935059456',
|
|
])
|
|
})
|
|
|
|
it('should fail on incorrect index', () => {
|
|
const tree = new MerkleTree(10, [1, 2, 3, 4])
|
|
should().throw((() => tree.path(-1)), 'Index out of bounds: -1')
|
|
should().throw((() => tree.path(5)), 'Index out of bounds: 5')
|
|
// @ts-ignore
|
|
should().throw((() => tree.path('qwe')), 'Index out of bounds: qwe')
|
|
})
|
|
|
|
it('should work for correct string index', () => {
|
|
const tree = new MerkleTree(10, [1, 2, 3, 4, 5])
|
|
// @ts-ignore
|
|
const path = tree.path('2')
|
|
assert.deepEqual(path.pathIndices, [0, 1, 0, 0, 0, 0, 0, 0, 0, 0])
|
|
assert.deepEqual(path.pathElements, [
|
|
4,
|
|
'4027992409016347597424110157229339967488',
|
|
'3591172241203040147397382471352592629760',
|
|
'938972308169430750202858820582946897920',
|
|
'3743880566844110745576746962917825445888',
|
|
'2074434463882483178614385966084599578624',
|
|
'2808856778596740691845240322870189490176',
|
|
'4986731814143931240516913804278285467648',
|
|
'1918547053077726613961101558405545328640',
|
|
'5444383861051812288142814494928935059456',
|
|
|
|
])
|
|
})
|
|
})
|
|
describe('#proof', () => {
|
|
it('should return proof for leaf', () => {
|
|
const tree = new MerkleTree(10, [1, 2, 3, 4, 5])
|
|
assert.deepEqual(tree.proof(4), tree.path(3))
|
|
})
|
|
})
|
|
|
|
describe('#getTreeEdge', () => {
|
|
it('should return correct treeEdge', () => {
|
|
const expectedEdge: TreeEdge = {
|
|
edgePath: {
|
|
pathElements: [
|
|
5,
|
|
'1390935134112885103361924701261056180224',
|
|
'1952916572242076545231119328171167580160',
|
|
'938972308169430750202858820582946897920',
|
|
],
|
|
pathIndices: [0, 0, 1, 0],
|
|
pathPositions: [5, 0, 0, 0],
|
|
pathRoot: '3283298202329284319899364273680487022592',
|
|
},
|
|
edgeElement: 4,
|
|
edgeIndex: 4,
|
|
edgeElementsCount: 6,
|
|
}
|
|
const tree = new MerkleTree(4, [0, 1, 2, 3, 4, 5])
|
|
assert.deepEqual(tree.getTreeEdge(4), expectedEdge)
|
|
})
|
|
it('should fail if element not found', () => {
|
|
const tree = new MerkleTree(4, [0, 1, 2, 3, 4, 5])
|
|
const call = () => tree.getTreeEdge(6)
|
|
should().throw(call, 'Element not found')
|
|
})
|
|
})
|
|
describe('#getTreeSlices', () => {
|
|
let fullTree: MerkleTree
|
|
before(async () => {
|
|
const elements = Array.from({ length: 2 ** 10 }, (_, i) => i)
|
|
fullTree = new MerkleTree(10, elements)
|
|
return Promise.resolve()
|
|
})
|
|
it('should return correct slices count', () => {
|
|
const count = 4
|
|
const slicesCount = fullTree.getTreeSlices(4).length
|
|
should().equal(count, slicesCount)
|
|
}).timeout(10000)
|
|
|
|
it('should be able to create partial tree from last slice', () => {
|
|
const [, , , lastSlice] = fullTree.getTreeSlices()
|
|
const partialTree = new PartialMerkleTree(10, lastSlice.edge, lastSlice.elements)
|
|
assert.deepEqual(fullTree.root, partialTree.root)
|
|
}).timeout(10000)
|
|
|
|
it('should be able to build full tree from slices', () => {
|
|
const slices = fullTree.getTreeSlices()
|
|
const lastSlice = slices.pop()
|
|
const partialTree = new PartialMerkleTree(10, lastSlice.edge, lastSlice.elements)
|
|
slices.reverse().forEach(({ edge, elements }) => {
|
|
partialTree.shiftEdge(edge, elements)
|
|
})
|
|
assert.deepEqual(fullTree.layers, partialTree.layers)
|
|
}).timeout(10000)
|
|
|
|
it('should return same path', () => {
|
|
const slices = fullTree.getTreeSlices()
|
|
const lastSlice = slices.pop()
|
|
const partialTree = new PartialMerkleTree(10, lastSlice.edge, lastSlice.elements)
|
|
slices.reverse().forEach(({ edge, elements }) => {
|
|
partialTree.shiftEdge(edge, elements)
|
|
})
|
|
assert.deepEqual(fullTree.path(100), partialTree.path(100))
|
|
}).timeout(10000)
|
|
|
|
it('should throw if invalid number of elements', () => {
|
|
const [firstSlice] = fullTree.getTreeSlices()
|
|
const call = () => new PartialMerkleTree(10, firstSlice.edge, firstSlice.elements)
|
|
should().throw(call, 'Invalid number of elements')
|
|
}).timeout(10000)
|
|
})
|
|
describe('#getters', () => {
|
|
const elements = [1, 2, 3, 4, 5]
|
|
const layers = [
|
|
[1, 2, 3, 4, 5],
|
|
[
|
|
'4027992409016347597424110157229339967488',
|
|
'923221781152860005594997320673730232320',
|
|
'752191049236692618445397735417537626112',
|
|
|
|
],
|
|
[
|
|
'81822854828781486047086122479545722339328',
|
|
'3591172241203040147397382471352592629760',
|
|
|
|
],
|
|
['2729943778107054496417267081388406865920'],
|
|
['4562739390655416913642128116127918718976'],
|
|
]
|
|
|
|
it('should return same elements in array', () => {
|
|
const tree = new MerkleTree(10, elements)
|
|
assert.deepEqual(tree.elements, elements)
|
|
})
|
|
it('should return copy of elements array', () => {
|
|
const tree = new MerkleTree(10, elements)
|
|
const elements1 = tree.elements
|
|
tree.insert(6)
|
|
const elements2 = tree.elements
|
|
should().not.equal(elements1, elements2)
|
|
})
|
|
|
|
it('should return same layers in array', () => {
|
|
const tree = new MerkleTree(4, elements)
|
|
assert.deepEqual(tree.layers, layers)
|
|
})
|
|
it('should return copy of elements array', () => {
|
|
const tree = new MerkleTree(4, elements)
|
|
const layers1 = tree.layers
|
|
tree.insert(6)
|
|
const layers2 = tree.layers
|
|
should().not.equal(layers1, layers2)
|
|
})
|
|
it('should return correct zeros array', () => {
|
|
const zeros = [
|
|
0,
|
|
'1390935134112885103361924701261056180224',
|
|
'3223901263414086620636498663535535980544',
|
|
'938972308169430750202858820582946897920',
|
|
'3743880566844110745576746962917825445888',
|
|
]
|
|
const tree = new MerkleTree(4, [])
|
|
assert.deepEqual(tree.zeros, zeros, 'Not equal')
|
|
})
|
|
it('should return copy of zeros array', () => {
|
|
const tree = new MerkleTree(4, [])
|
|
const zeros1 = tree.zeros
|
|
tree.insert(6)
|
|
const zeros2 = tree.zeros
|
|
should().not.equal(zeros1, zeros2)
|
|
})
|
|
})
|
|
|
|
describe('#serialize', () => {
|
|
it('should work', () => {
|
|
const src = new MerkleTree(10, [1, 2, 3, 4, 5, 6, 7, 8, 9])
|
|
const data = src.serialize()
|
|
const dst = MerkleTree.deserialize(data)
|
|
should().equal(src.root, dst.root)
|
|
|
|
src.insert(10)
|
|
dst.insert(10)
|
|
|
|
should().equal(src.root, dst.root)
|
|
})
|
|
})
|
|
describe('#toString', () => {
|
|
it('should return correct stringified representation', () => {
|
|
const src = new MerkleTree(10, [1, 2, 3, 4, 5, 6, 7, 8, 9])
|
|
const str = src.toString()
|
|
const dst = MerkleTree.deserialize(JSON.parse(str))
|
|
should().equal(src.root, dst.root)
|
|
|
|
src.insert(10)
|
|
dst.insert(10)
|
|
|
|
should().equal(src.root, dst.root)
|
|
|
|
})
|
|
})
|
|
})
|