coder.decodeParam.js

var chai = require('chai');
var assert = chai.assert;
var coder = require('../lib/solidity/coder');
var c = require('../lib/utils/config');
var BigNumber = require('bignumber.js');
var bn = BigNumber;

c.USE_RAW_BYTES = false;

describe('lib/solidity/coder', function () {
    describe('decodeParam', function () {
        var test = function (t) {
            it('should turn ' + t.value + ' to ' + t.expected, function () {
                assert.deepEqual(coder.decodeParam(t.type, t.value), t.expected);
            });
        };

        test({
            type: 'address', expected: '407d73d8a49eeb85d32cf465507dd71d507100c1',
            value: '000000000000000000000000407d73d8a49eeb85d32cf465507dd71d507100c1'
        });
        test({
            type: 'address[2]',
            expected: ['407d73d8a49eeb85d32cf465507dd71d507100c1', '407d73d8a49eeb85d32cf465507dd71d507100c3'],
            value: '000000000000000000000000407d73d8a49eeb85d32cf465507dd71d507100c1' +
            '000000000000000000000000407d73d8a49eeb85d32cf465507dd71d507100c3'
        });
        test({
            type: 'address[]',
            expected: ['407d73d8a49eeb85d32cf465507dd71d507100c1', '407d73d8a49eeb85d32cf465507dd71d507100c3'],
            value: '0000000000000000000000000000000000000000000000000000000000000020' +
            '0000000000000000000000000000000000000000000000000000000000000002' +
            '000000000000000000000000407d73d8a49eeb85d32cf465507dd71d507100c1' +
            '000000000000000000000000407d73d8a49eeb85d32cf465507dd71d507100c3'
        });
        test({
            type: 'address[][2]',
            expected: [['407d73d8a49eeb85d32cf465507dd71d507100c1', '407d73d8a49eeb85d32cf465507dd71d507100c2'],
                ['407d73d8a49eeb85d32cf465507dd71d507100c3', '407d73d8a49eeb85d32cf465507dd71d507100c4']],
            value: '0000000000000000000000000000000000000000000000000000000000000040' +
            '00000000000000000000000000000000000000000000000000000000000000a0' +
            '0000000000000000000000000000000000000000000000000000000000000002' + /* 40 */
            '000000000000000000000000407d73d8a49eeb85d32cf465507dd71d507100c1' + /* 60 */
            '000000000000000000000000407d73d8a49eeb85d32cf465507dd71d507100c2' +
            '0000000000000000000000000000000000000000000000000000000000000002' + /* a0 */
            '000000000000000000000000407d73d8a49eeb85d32cf465507dd71d507100c3' +
            '000000000000000000000000407d73d8a49eeb85d32cf465507dd71d507100c4'
        });
        test({
            type: 'address[2][]',
            expected: [['407d73d8a49eeb85d32cf465507dd71d507100c1', '407d73d8a49eeb85d32cf465507dd71d507100c2'],
                ['407d73d8a49eeb85d32cf465507dd71d507100c3', '407d73d8a49eeb85d32cf465507dd71d507100c4']],
            value: '0000000000000000000000000000000000000000000000000000000000000020' +
            '0000000000000000000000000000000000000000000000000000000000000002' + /* 20 */
            '000000000000000000000000407d73d8a49eeb85d32cf465507dd71d507100c1' +
            '000000000000000000000000407d73d8a49eeb85d32cf465507dd71d507100c2' +
            '000000000000000000000000407d73d8a49eeb85d32cf465507dd71d507100c3' +
            '000000000000000000000000407d73d8a49eeb85d32cf465507dd71d507100c4'
        });
        test({
            type: 'address[][]',
            expected: [['407d73d8a49eeb85d32cf465507dd71d507100c1', '407d73d8a49eeb85d32cf465507dd71d507100c2'],
                ['407d73d8a49eeb85d32cf465507dd71d507100c3', '407d73d8a49eeb85d32cf465507dd71d507100c4']],
            value: '0000000000000000000000000000000000000000000000000000000000000020' +
            '0000000000000000000000000000000000000000000000000000000000000002' + /* 20 */
            '0000000000000000000000000000000000000000000000000000000000000080' +
            '00000000000000000000000000000000000000000000000000000000000000e0' +
            '0000000000000000000000000000000000000000000000000000000000000002' + /* 80 */
            '000000000000000000000000407d73d8a49eeb85d32cf465507dd71d507100c1' + /* a0 */
            '000000000000000000000000407d73d8a49eeb85d32cf465507dd71d507100c2' +
            '0000000000000000000000000000000000000000000000000000000000000002' + /* e0 */
            '000000000000000000000000407d73d8a49eeb85d32cf465507dd71d507100c3' +
            '000000000000000000000000407d73d8a49eeb85d32cf465507dd71d507100c4'
        });
        test({type: 'bool', expected: true, value: '0000000000000000000000000000000000000000000000000000000000000001'});
        test({
            type: 'bool',
            expected: false,
            value: '0000000000000000000000000000000000000000000000000000000000000000'
        });
        test({
            type: 'bool[2]', expected: [true, false],
            value: '0000000000000000000000000000000000000000000000000000000000000001' +
            '0000000000000000000000000000000000000000000000000000000000000000'
        });
        test({
            type: 'bool[]', expected: [true, true, false],
            value: '0000000000000000000000000000000000000000000000000000000000000020' +
            '0000000000000000000000000000000000000000000000000000000000000003' +
            '0000000000000000000000000000000000000000000000000000000000000001' +
            '0000000000000000000000000000000000000000000000000000000000000001' +
            '0000000000000000000000000000000000000000000000000000000000000000'
        });

        test({
            type: 'int',
            expected: new bn(1),
            value: '0000000000000000000000000000000000000000000000000000000000000001'
        });
        test({
            type: 'int',
            expected: new bn(1),
            value: '0000000000000000000000000000000000000000000000000000000000000001'
        });
        test({
            type: 'int',
            expected: new bn(16),
            value: '0000000000000000000000000000000000000000000000000000000000000010'
        });
        test({
            type: 'int',
            expected: new bn(-1),
            value: 'ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff'
        });
        test({
            type: 'int256',
            expected: new bn(1),
            value: '0000000000000000000000000000000000000000000000000000000000000001'
        });
        test({
            type: 'int256',
            expected: new bn(16),
            value: '0000000000000000000000000000000000000000000000000000000000000010'
        });
        test({
            type: 'int256',
            expected: new bn(-1),
            value: 'ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff'
        });
        test({
            type: 'int8',
            expected: new bn(16),
            value: '0000000000000000000000000000000000000000000000000000000000000010'
        });
        test({
            type: 'int32',
            expected: new bn(16),
            value: '0000000000000000000000000000000000000000000000000000000000000010'
        });
        test({
            type: 'int64',
            expected: new bn(16),
            value: '0000000000000000000000000000000000000000000000000000000000000010'
        });
        test({
            type: 'int128',
            expected: new bn(16),
            value: '0000000000000000000000000000000000000000000000000000000000000010'
        });
        test({
            type: 'int[]', expected: [], value: '0000000000000000000000000000000000000000000000000000000000000020' +
            '0000000000000000000000000000000000000000000000000000000000000000'
        });
        test({
            type: 'int[]',
            expected: [new bn(3)],
            value: '0000000000000000000000000000000000000000000000000000000000000020' +
            '0000000000000000000000000000000000000000000000000000000000000001' +
            '0000000000000000000000000000000000000000000000000000000000000003'
        });
        test({
            type: 'int256[]',
            expected: [new bn(3)],
            value: '0000000000000000000000000000000000000000000000000000000000000020' +
            '0000000000000000000000000000000000000000000000000000000000000001' +
            '0000000000000000000000000000000000000000000000000000000000000003'
        });
        test({
            type: 'int[]', expected: [new bn(1), new bn(2), new bn(3)],
            value: '0000000000000000000000000000000000000000000000000000000000000020' +
            '0000000000000000000000000000000000000000000000000000000000000003' +
            '0000000000000000000000000000000000000000000000000000000000000001' +
            '0000000000000000000000000000000000000000000000000000000000000002' +
            '0000000000000000000000000000000000000000000000000000000000000003'
        });
        test({
            type: 'int[3][]', expected: [[new bn(1), new bn(2), new bn(3)], [new bn(4), new bn(5), new bn(6)]],
            value: '0000000000000000000000000000000000000000000000000000000000000020' +
            '0000000000000000000000000000000000000000000000000000000000000002' +
            '0000000000000000000000000000000000000000000000000000000000000001' +
            '0000000000000000000000000000000000000000000000000000000000000002' +
            '0000000000000000000000000000000000000000000000000000000000000003' +
            '0000000000000000000000000000000000000000000000000000000000000004' +
            '0000000000000000000000000000000000000000000000000000000000000005' +
            '0000000000000000000000000000000000000000000000000000000000000006'
        });

        test({
            type: 'uint',
            expected: new bn(1),
            value: '0000000000000000000000000000000000000000000000000000000000000001'
        });
        test({
            type: 'uint',
            expected: new bn(1),
            value: '0000000000000000000000000000000000000000000000000000000000000001'
        });
        test({
            type: 'uint',
            expected: new bn(16),
            value: '0000000000000000000000000000000000000000000000000000000000000010'
        });
        test({
            type: 'uint', expected: new bn('0xffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff'),
            value: 'ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff'
        });
        test({
            type: 'uint256',
            expected: new bn(1),
            value: '0000000000000000000000000000000000000000000000000000000000000001'
        });
        test({
            type: 'uint256',
            expected: new bn(16),
            value: '0000000000000000000000000000000000000000000000000000000000000010'
        });
        test({
            type: 'uint8',
            expected: new bn(16),
            value: '0000000000000000000000000000000000000000000000000000000000000010'
        });
        test({
            type: 'uint32',
            expected: new bn(16),
            value: '0000000000000000000000000000000000000000000000000000000000000010'
        });
        test({
            type: 'uint64',
            expected: new bn(16),
            value: '0000000000000000000000000000000000000000000000000000000000000010'
        });
        test({
            type: 'uint128',
            expected: new bn(16),
            value: '0000000000000000000000000000000000000000000000000000000000000010'
        });
        test({
            type: 'uint[]', expected: [], value: '0000000000000000000000000000000000000000000000000000000000000020' +
            '0000000000000000000000000000000000000000000000000000000000000000'
        });
        test({
            type: 'uint[]',
            expected: [new bn(3)],
            value: '0000000000000000000000000000000000000000000000000000000000000020' +
            '0000000000000000000000000000000000000000000000000000000000000001' +
            '0000000000000000000000000000000000000000000000000000000000000003'
        });
        test({
            type: 'uint256[]',
            expected: [new bn(3)],
            value: '0000000000000000000000000000000000000000000000000000000000000020' +
            '0000000000000000000000000000000000000000000000000000000000000001' +
            '0000000000000000000000000000000000000000000000000000000000000003'
        });
        test({
            type: 'uint[]', expected: [new bn(1), new bn(2), new bn(3)],
            value: '0000000000000000000000000000000000000000000000000000000000000020' +
            '0000000000000000000000000000000000000000000000000000000000000003' +
            '0000000000000000000000000000000000000000000000000000000000000001' +
            '0000000000000000000000000000000000000000000000000000000000000002' +
            '0000000000000000000000000000000000000000000000000000000000000003'
        });
        test({
            type: 'uint[3][]', expected: [[new bn(1), new bn(2), new bn(3)], [new bn(4), new bn(5), new bn(6)]],
            value: '0000000000000000000000000000000000000000000000000000000000000020' +
            '0000000000000000000000000000000000000000000000000000000000000002' +
            '0000000000000000000000000000000000000000000000000000000000000001' +
            '0000000000000000000000000000000000000000000000000000000000000002' +
            '0000000000000000000000000000000000000000000000000000000000000003' +
            '0000000000000000000000000000000000000000000000000000000000000004' +
            '0000000000000000000000000000000000000000000000000000000000000005' +
            '0000000000000000000000000000000000000000000000000000000000000006'
        });
        test({
            type: 'bytes32', expected: '6761766f66796f726b0000000000000000000000000000000000000000000000',
            value: '6761766f66796f726b0000000000000000000000000000000000000000000000'
        });
        test({
            type: 'bytes', expected: '6761766f66796f726b',
            value: '0000000000000000000000000000000000000000000000000000000000000020' +
            '0000000000000000000000000000000000000000000000000000000000000009' +
            '6761766f66796f726b0000000000000000000000000000000000000000000000'
        });
        test({
            type: 'bytes32', expected: '731a3afc00d1b1e3461b955e53fc866dcf303b3eb9f4c16f89e388930f48134b',
            value: '731a3afc00d1b1e3461b955e53fc866dcf303b3eb9f4c16f89e388930f48134b'
        });
        test({
            type: 'bytes', expected: '731a3afc00d1b1e3461b955e53fc866dcf303b3eb9f4c16f89e388930f48134b',
            value: '0000000000000000000000000000000000000000000000000000000000000020' +
            '0000000000000000000000000000000000000000000000000000000000000020' +
            '731a3afc00d1b1e3461b955e53fc866dcf303b3eb9f4c16f89e388930f48134b'
        });
        test({
            type: 'bytes', expected: '731a3afc00d1b1e3461b955e53fc866dcf303b3eb9f4c16f89e388930f48134b' +
            '731a3afc00d1b1e3461b955e53fc866dcf303b3eb9f4c16f89e388930f48134b',
            value: '0000000000000000000000000000000000000000000000000000000000000020' +
            '0000000000000000000000000000000000000000000000000000000000000040' +
            '731a3afc00d1b1e3461b955e53fc866dcf303b3eb9f4c16f89e388930f48134b' +
            '731a3afc00d1b1e3461b955e53fc866dcf303b3eb9f4c16f89e388930f48134b'
        });
        test({
            type: 'bytes', expected: '131a3afc00d1b1e3461b955e53fc866dcf303b3eb9f4c16f89e388930f48134b' +
            '231a3afc00d1b1e3461b955e53fc866dcf303b3eb9f4c16f89e388930f48134b' +
            '331a3afc00d1b1e3461b955e53fc866dcf303b3eb9f4c16f89e388930f48134b',
            value: '0000000000000000000000000000000000000000000000000000000000000020' +
            '0000000000000000000000000000000000000000000000000000000000000060' +
            '131a3afc00d1b1e3461b955e53fc866dcf303b3eb9f4c16f89e388930f48134b' +
            '231a3afc00d1b1e3461b955e53fc866dcf303b3eb9f4c16f89e388930f48134b' +
            '331a3afc00d1b1e3461b955e53fc866dcf303b3eb9f4c16f89e388930f48134b'
        });
        /*
        test({
            type: 'string',
            expected: 'gavofyork',
            value: '0000000000000000000000000000000000000000000000000000000000000020' +
            '0000000000000000000000000000000000000000000000000000000000000009' +
            '6761766f66796f726b0000000000000000000000000000000000000000000000'
        });
        test({
            type: 'string', expected: 'ää',
            value: '0000000000000000000000000000000000000000000000000000000000000020' +
            '0000000000000000000000000000000000000000000000000000000000000008' +
            'c383c2a4c383c2a4000000000000000000000000000000000000000000000000'
        });
        test({
            type: 'string', expected: 'ü',
            value: '0000000000000000000000000000000000000000000000000000000000000020' +
            '0000000000000000000000000000000000000000000000000000000000000002' +
            'c3bc000000000000000000000000000000000000000000000000000000000000'
        });
        test({
            type: 'string', expected: 'Ã',
            value: '0000000000000000000000000000000000000000000000000000000000000020' +
            '0000000000000000000000000000000000000000000000000000000000000002' +
            'c383000000000000000000000000000000000000000000000000000000000000'
        });
        */
        test({
            type: 'bytes', expected: 'c3a40000c3a4',
            value: '0000000000000000000000000000000000000000000000000000000000000020' +
            '0000000000000000000000000000000000000000000000000000000000000006' +
            'c3a40000c3a40000000000000000000000000000000000000000000000000000'
        });
        test({
            type: 'bytes32', expected: 'c3a40000c3a40000000000000000000000000000000000000000000000000000',
            value: 'c3a40000c3a40000000000000000000000000000000000000000000000000000'
        });
        test({ type: 'real', expected: new bn(1),           value: '0000000000000000000000000000000100000000000000000000000000000000'});
        test({ type: 'real', expected: new bn(2.125),       value: '0000000000000000000000000000000220000000000000000000000000000000'});
        test({ type: 'real', expected: new bn(8.5),         value: '0000000000000000000000000000000880000000000000000000000000000000'});
        test({ type: 'real', expected: new bn(-1),          value: 'ffffffffffffffffffffffffffffffff00000000000000000000000000000000'});
        test({ type: 'ureal', expected: new bn(1),          value: '0000000000000000000000000000000100000000000000000000000000000000'});
        test({ type: 'ureal', expected: new bn(2.125),      value: '0000000000000000000000000000000220000000000000000000000000000000'});
        test({ type: 'ureal', expected: new bn(8.5),        value: '0000000000000000000000000000000880000000000000000000000000000000'});
        test({ type: 'address', expected: '407d73d8a49eeb85d32cf465507dd71d507100c1',
            value: '000000000000000000000000407d73d8a49eeb85d32cf465507dd71d507100c1'});
        /*
        test({ type: 'string', expected: 'welcome to ethereum. welcome to ethereum. welcome to ethereum.',
            value: '0000000000000000000000000000000000000000000000000000000000000020' +
            '000000000000000000000000000000000000000000000000000000000000003e' +
            '77656c636f6d6520746f20657468657265756d2e2077656c636f6d6520746f20' +
            '657468657265756d2e2077656c636f6d6520746f20657468657265756d2e0000'});
        */
    });
});

describe('lib/solidity/coder', function () {
    describe('decodeParams', function () {
        var test = function (t) {
            it('should turn ' + t.values + ' to ' + t.expected, function () {
                assert.deepEqual(coder.decodeParams(t.types, t.values), t.expected);
            });
        };


        test({
            types: ['int'],
            expected: [new bn(1)],
            values: '0000000000000000000000000000000000000000000000000000000000000001'
        });
        test({
            types: ['bytes32', 'int'],
            expected: ['6761766f66796f726b0000000000000000000000000000000000000000000000', new bn(5)],
            values: '6761766f66796f726b0000000000000000000000000000000000000000000000' +
            '0000000000000000000000000000000000000000000000000000000000000005'
        });
        test({
            types: ['int', 'bytes32'],
            expected: [new bn(5), '6761766f66796f726b0000000000000000000000000000000000000000000000'],
            values: '0000000000000000000000000000000000000000000000000000000000000005' +
            '6761766f66796f726b0000000000000000000000000000000000000000000000'
        });
        /*
        test({
            types: ['int', 'string', 'int', 'int', 'int', 'int[]'],
            expected: [new bn(1), 'gavofyork', new bn(2), new bn(3), new bn(4),
                [new bn(5), new bn(6), new bn(7)]],
            values: '0000000000000000000000000000000000000000000000000000000000000001' +
            '00000000000000000000000000000000000000000000000000000000000000c0' +
            '0000000000000000000000000000000000000000000000000000000000000002' +
            '0000000000000000000000000000000000000000000000000000000000000003' +
            '0000000000000000000000000000000000000000000000000000000000000004' +
            '0000000000000000000000000000000000000000000000000000000000000100' +
            '0000000000000000000000000000000000000000000000000000000000000009' +
            '6761766f66796f726b0000000000000000000000000000000000000000000000' +
            '0000000000000000000000000000000000000000000000000000000000000003' +
            '0000000000000000000000000000000000000000000000000000000000000005' +
            '0000000000000000000000000000000000000000000000000000000000000006' +
            '0000000000000000000000000000000000000000000000000000000000000007'
        });
        */
        test({
            types: ['int', 'bytes', 'int', 'bytes'], expected: [
                new bn(5),
                '131a3afc00d1b1e3461b955e53fc866dcf303b3eb9f4c16f89e388930f48134b' +
                '231a3afc00d1b1e3461b955e53fc866dcf303b3eb9f4c16f89e388930f48134b',
                new bn(3),
                '331a3afc00d1b1e3461b955e53fc866dcf303b3eb9f4c16f89e388930f48134b' +
                '431a3afc00d1b1e3461b955e53fc866dcf303b3eb9f4c16f89e388930f48134b',
            ],
            values: '0000000000000000000000000000000000000000000000000000000000000005' +
            '0000000000000000000000000000000000000000000000000000000000000080' +
            '0000000000000000000000000000000000000000000000000000000000000003' +
            '00000000000000000000000000000000000000000000000000000000000000e0' +
            '0000000000000000000000000000000000000000000000000000000000000040' +
            '131a3afc00d1b1e3461b955e53fc866dcf303b3eb9f4c16f89e388930f48134b' +
            '231a3afc00d1b1e3461b955e53fc866dcf303b3eb9f4c16f89e388930f48134b' +
            '0000000000000000000000000000000000000000000000000000000000000040' +
            '331a3afc00d1b1e3461b955e53fc866dcf303b3eb9f4c16f89e388930f48134b' +
            '431a3afc00d1b1e3461b955e53fc866dcf303b3eb9f4c16f89e388930f48134b'
        });
    });
});