351 lines
8.2 KiB
JavaScript
351 lines
8.2 KiB
JavaScript
/* eslint-env mocha */
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/* eslint prefer-arrow-callback: "off" */
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'use strict';
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const assert = require('assert');
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const Script = require('../lib/script/script');
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const Witness = require('../lib/script/witness');
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const Stack = require('../lib/script/stack');
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const TX = require('../lib/primitives/tx');
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const util = require('../lib/utils/util');
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const encoding = require('../lib/utils/encoding');
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const opcodes = Script.opcodes;
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const scripts = require('./data/script-tests.json');
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function isSuccess(stack) {
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if (stack.length === 0)
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return false;
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if (!Script.bool(stack.top(-1)))
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return false;
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return true;
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}
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function parseScriptTest(data) {
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const witArr = Array.isArray(data[0]) ? data.shift() : [];
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const inpHex = data[0] ? data[0].trim() : data[0] || '';
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const outHex = data[1] ? data[1].trim() : data[1] || '';
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const names = data[2] ? data[2].trim().split(/,\s*/) : [];
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const expected = data[3] || '';
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let comments = Array.isArray(data[4]) ? data[4].join('. ') : data[4] || '';
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if (!comments)
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comments = outHex.slice(0, 60);
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comments += ` (${expected})`;
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let value = 0;
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if (witArr.length > 0)
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value = util.fromDouble(witArr.pop(), 8);
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const witness = Witness.fromString(witArr);
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const input = Script.fromString(inpHex);
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const output = Script.fromString(outHex);
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let flags = 0;
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for (const name of names) {
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const flag = `VERIFY_${name}`;
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assert(Script.flags[flag] != null, 'Unknown flag.');
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flags |= Script.flags[flag];
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}
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return {
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witness: witness,
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input: input,
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output: output,
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value: value,
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flags: flags,
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expected: expected,
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comments: comments
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};
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}
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describe('Script', function() {
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it('should encode/decode script', () => {
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const src = Buffer.from(''
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+ '20'
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+ '000102030405060708090a0b0c0d0e0f101112131415161718191a1b1c1d1e1f'
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+ '20'
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+ '101112131415161718191a1b1c1d1e1f202122232425262728292a2b2c2d2e2f'
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+ 'ac',
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'hex');
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const decoded = Script.fromRaw(src);
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assert.strictEqual(decoded.code.length, 3);
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assert.strictEqual(decoded.code[0].data.toString('hex'),
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'000102030405060708090a0b0c0d0e0f101112131415161718191a1b1c1d1e1f');
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assert.strictEqual(decoded.code[1].data.toString('hex'),
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'101112131415161718191a1b1c1d1e1f202122232425262728292a2b2c2d2e2f');
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assert.strictEqual(decoded.code[2].value, opcodes.OP_CHECKSIG);
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const dst = decoded.toRaw();
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assert.deepStrictEqual(dst, src);
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});
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it('should encode/decode numbers', () => {
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const script = [0, 0x51, 0x52, 0x60];
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const encoded = Script.fromArray(script).raw;
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const decoded = Script(encoded).toArray();
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assert.deepStrictEqual(decoded, script);
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});
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it('should recognize a P2SH output', () => {
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const hex = 'a91419a7d869032368fd1f1e26e5e73a4ad0e474960e87';
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const decoded = Script.fromRaw(hex, 'hex');
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assert(decoded.isScripthash());
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});
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it('should recognize a Null Data output', () => {
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const hex = '6a28590c080112220a1b353930632e6f7267282a5f'
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+ '5e294f7665726c6179404f7261636c65103b1a010c';
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const decoded = Script.fromRaw(hex, 'hex');
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assert(decoded.isNulldata());
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});
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it('should handle if statements correctly', () => {
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{
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const input = new Script([opcodes.OP_1, opcodes.OP_2]);
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const output = new Script([
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opcodes.OP_2,
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opcodes.OP_EQUAL,
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opcodes.OP_IF,
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opcodes.OP_3,
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opcodes.OP_ELSE,
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opcodes.OP_4,
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opcodes.OP_ENDIF,
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opcodes.OP_5
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]);
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const stack = new Stack();
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input.execute(stack);
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output.execute(stack);
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assert.deepEqual(stack.items, [[1], [3], [5]]);
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}
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{
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const input = new Script([opcodes.OP_1, opcodes.OP_2]);
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const output = new Script([
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opcodes.OP_9,
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opcodes.OP_EQUAL,
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opcodes.OP_IF,
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opcodes.OP_3,
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opcodes.OP_ELSE,
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opcodes.OP_4,
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opcodes.OP_ENDIF,
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opcodes.OP_5
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]);
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const stack = new Stack();
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input.execute(stack);
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output.execute(stack);
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assert.deepEqual(stack.items, [[1], [4], [5]]);
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}
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{
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const input = new Script([opcodes.OP_1, opcodes.OP_2]);
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const output = new Script([
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opcodes.OP_2,
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opcodes.OP_EQUAL,
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opcodes.OP_IF,
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opcodes.OP_3,
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opcodes.OP_ENDIF,
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opcodes.OP_5
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]);
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const stack = new Stack();
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input.execute(stack);
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output.execute(stack);
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assert.deepEqual(stack.items, [[1], [3], [5]]);
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}
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{
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const input = new Script([opcodes.OP_1, opcodes.OP_2]);
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const output = new Script([
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opcodes.OP_9,
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opcodes.OP_EQUAL,
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opcodes.OP_IF,
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opcodes.OP_3,
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opcodes.OP_ENDIF,
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opcodes.OP_5
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]);
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const stack = new Stack();
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input.execute(stack);
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output.execute(stack);
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assert.deepEqual(stack.items, [[1], [5]]);
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}
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{
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const input = new Script([opcodes.OP_1, opcodes.OP_2]);
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const output = new Script([
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opcodes.OP_9,
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opcodes.OP_EQUAL,
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opcodes.OP_NOTIF,
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opcodes.OP_3,
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opcodes.OP_ENDIF,
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opcodes.OP_5
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]);
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const stack = new Stack();
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input.execute(stack);
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output.execute(stack);
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assert.deepEqual(stack.items, [[1], [3], [5]]);
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}
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});
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it('should handle CScriptNums correctly', () => {
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const input = new Script([
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Buffer.from('ffffff7f', 'hex'),
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opcodes.OP_NEGATE,
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opcodes.OP_DUP,
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opcodes.OP_ADD
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]);
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const output = new Script([
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Buffer.from('feffffff80', 'hex'),
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opcodes.OP_EQUAL
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]);
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const stack = new Stack();
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input.execute(stack);
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output.execute(stack);
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assert(isSuccess(stack));
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});
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it('should handle CScriptNums correctly', () => {
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const input = new Script([
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opcodes.OP_11,
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opcodes.OP_10,
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opcodes.OP_1,
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opcodes.OP_ADD
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]);
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const output = new Script([
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opcodes.OP_NUMNOTEQUAL,
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opcodes.OP_NOT
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]);
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const stack = new Stack();
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input.execute(stack);
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output.execute(stack);
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assert(isSuccess(stack));
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});
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it('should handle OP_ROLL correctly', () => {
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const input = new Script([
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Buffer.from([0x16]),
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Buffer.from([0x15]),
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Buffer.from([0x14])
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]);
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const output = new Script([
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opcodes.OP_0,
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opcodes.OP_ROLL,
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Buffer.from([0x14]),
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opcodes.OP_EQUALVERIFY,
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opcodes.OP_DEPTH,
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opcodes.OP_2,
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opcodes.OP_EQUAL
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]);
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const stack = new Stack();
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input.execute(stack);
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output.execute(stack);
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assert(isSuccess(stack));
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});
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for (const data of scripts) {
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if (data.length === 1)
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continue;
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const test = parseScriptTest(data);
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const {witness, input, output} = test;
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const {value, flags} = test;
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const {expected, comments} = test;
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for (const noCache of [false, true]) {
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const suffix = noCache ? 'without cache' : 'with cache';
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it(`should handle script test ${suffix}:${comments}`, () => {
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// Funding transaction.
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const prev = new TX({
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version: 1,
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inputs: [{
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prevout: {
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hash: encoding.NULL_HASH,
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index: 0xffffffff
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},
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script: [opcodes.OP_0, opcodes.OP_0],
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witness: [],
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sequence: 0xffffffff
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}],
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outputs: [{
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script: output,
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value: value
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}],
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locktime: 0
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});
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// Spending transaction.
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const tx = new TX({
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version: 1,
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inputs: [{
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prevout: {
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hash: prev.hash('hex'),
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index: 0
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},
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script: input,
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witness: witness,
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sequence: 0xffffffff
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}],
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outputs: [{
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script: [],
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value: value
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}],
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locktime: 0
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});
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if (noCache) {
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prev.refresh();
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tx.refresh();
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}
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let err;
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try {
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Script.verify(input, witness, output, tx, 0, value, flags);
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} catch (e) {
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err = e;
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}
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if (expected !== 'OK') {
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assert(err);
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assert.strictEqual(err.code, expected);
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return;
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}
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assert.ifError(err);
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});
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}
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}
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});
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