web3.js/test/event.decode.js

var chai = require('chai');
var assert = chai.assert;
var BigNumber = require('bignumber.js');
var SolidityEvent = require('../lib/web3/event');

var name = 'event1';
var address = '0x1234567890123456789012345678901234567890';

var tests = [{
    abi: {
        name: name,
        inputs: []
    },
    data: {
        logIndex: '0x1',
        transactionIndex: '0x10',
        transactionHash: '0x1234567890',
        address: address,
        blockHash: '0x1234567890',
        blockNumber: '0x1'
    },
    expected: {
        event: name,
        args: {},
        logIndex: 1,
        transactionIndex: 16,
        transactionHash: '0x1234567890',
        address: address,
        blockHash: '0x1234567890',
        blockNumber: 1
    }
}, {
    abi: {
        name: name,
        inputs: [{
            name: 'a',
            type: 'int',
            indexed: false
        }]
    },
    data: {
        logIndex: '0x1',
        transactionIndex: '0x10',
        transactionHash: '0x1234567890',
        address: address,
        blockHash: '0x1234567890',
        blockNumber: '0x1',
        data: '0x0000000000000000000000000000000000000000000000000000000000000001'
    },
    expected: {
        event: name,
        args: {
            a: new BigNumber(1)
        },
        logIndex: 1,
        transactionIndex: 16,
        transactionHash: '0x1234567890',
        address: address,
        blockHash: '0x1234567890',
        blockNumber: 1
    }
}, {
    abi: {
        name: name,
        inputs: [{
            name: 'a',
            type: 'int',
            indexed: false
        }, {
            name: 'b',
            type: 'int',
            indexed: true
        }, {
            name: 'c',
            type: 'int',
            indexed: false
        }, {
            name: 'd',
            type: 'int',
            indexed: true
        }]
    },
    data: {
        logIndex: '0x1',
        transactionIndex: '0x10',
        transactionHash: '0x1234567890',
        address: address,
        blockHash: '0x1234567890',
        blockNumber: '0x1',
        data: '0x' + 
            '0000000000000000000000000000000000000000000000000000000000000001' + 
            '0000000000000000000000000000000000000000000000000000000000000004',
        topics: [
            address, 
            '0x000000000000000000000000000000000000000000000000000000000000000a',
            '0x0000000000000000000000000000000000000000000000000000000000000010'
        ]
    },
    expected: {
        event: name,
        args: {
            a: new BigNumber(1),
            b: new BigNumber(10),
            c: new BigNumber(4),
            d: new BigNumber(16)
        },
        logIndex: 1,
        transactionIndex: 16,
        transactionHash: '0x1234567890',
        address: address,
        blockHash: '0x1234567890',
        blockNumber: 1
    }
}, {
    abi: {
        name: name,
        anonymous: true,
        inputs: [{
            name: 'a',
            type: 'int',
            indexed: false
        }, {
            name: 'b',
            type: 'int',
            indexed: true
        }, {
            name: 'c',
            type: 'int',
            indexed: false
        }, {
            name: 'd',
            type: 'int',
            indexed: true
        }]
    },
    data: {
        logIndex: '0x1',
        transactionIndex: '0x10',
        transactionHash: '0x1234567890',
        address: address,
        blockHash: '0x1234567890',
        blockNumber: '0x1',
        data: '0x' + 
            '0000000000000000000000000000000000000000000000000000000000000001' + 
            '0000000000000000000000000000000000000000000000000000000000000004',
        topics: [
            '0x000000000000000000000000000000000000000000000000000000000000000a',
            '0x0000000000000000000000000000000000000000000000000000000000000010'
        ]
    },
    expected: {
        event: name,
        args: {
            a: new BigNumber(1),
            b: new BigNumber(10),
            c: new BigNumber(4),
            d: new BigNumber(16)
        },
        logIndex: 1,
        transactionIndex: 16,
        transactionHash: '0x1234567890',
        address: address,
        blockHash: '0x1234567890',
        blockNumber: 1
    }
}];

describe('lib/web3/event', function () {
    describe('decode', function () {
        tests.forEach(function (test, index) {
            it('test no: ' + index, function () {
                var event = new SolidityEvent(test.abi, address);

                var result = event.decode(test.data);
                assert.deepEqual(result, test.expected);
            });
        });
    });
});