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batch.js
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var chai = require('chai');
var assert = chai.assert;
var Web3 = require('../packages/web3');
var FakeIpcProvider = require('./helpers/FakeIpcProvider');
describe('lib/web3/batch', function () {
describe('execute', function () {
it('should execute batch request', function (done) {
var provider = new FakeIpcProvider();
var web3 = new Web3(provider);
var result = '0x126';
var resultVal = '294';
var result2 = '0x127';
var result2Val = '295';
provider.injectBatchResults([result, result2]);
var counter = 0;
var callback = function (err, r) {
counter++;
assert.deepEqual(r, resultVal);
};
var callback2 = function (err, r) {
assert.equal(counter, 1);
assert.deepEqual(r, result2Val);
done();
};
provider.injectValidation(function (payload) {
var first = payload[0];
var second = payload[1];
assert.equal(first.method, 'eth_getBalance');
assert.deepEqual(first.params, ['0x0000000000000000000000000000000000000000', 'latest']);
assert.equal(second.method, 'eth_getBalance');
assert.deepEqual(second.params, ['0x0000000000000000000000000000000000000005', 'latest']);
});
var batch = new web3.BatchRequest();
batch.add(web3.eth.getBalance.request('0x0000000000000000000000000000000000000000', 'latest', callback));
batch.add(web3.eth.getBalance.request('0x0000000000000000000000000000000000000005', 'latest', callback2));
batch.execute();
});
it('should execute batch request for async properties', function (done) {
var provider = new FakeIpcProvider();
var web3 = new Web3(provider);
var result = [];
var result2 = '0xb';
provider.injectBatchResults([result, result2]);
var counter = 0;
var callback = function (err, r) {
counter++;
assert.isArray(result, r);
};
var callback2 = function (err, r) {
assert.equal(counter, 1);
assert.equal(r, 11);
done();
};
provider.injectValidation(function (payload) {
var first = payload[0];
var second = payload[1];
assert.equal(first.method, 'eth_accounts');
assert.deepEqual(first.params, []);
assert.equal(second.method, 'shh_post');
assert.deepEqual(second.params, [{}]);
});
var batch = new web3.BatchRequest();
batch.add(web3.eth.getAccounts.request(callback));
batch.add(web3.shh.post.request({}, callback2));
batch.execute();
});
it('should execute batch request with contract', function (done) {
var provider = new FakeIpcProvider();
var web3 = new Web3(provider);
var abi = [{
"name": "balance",
"type": "function",
"inputs": [{
"name": "who",
"type": "address"
}],
"constant": true,
"outputs": [{
"name": "value",
"type": "uint256"
}]
}];
var address = '0x1000000000000000000000000000000000000001';
var result = '0x126';
var resultVal = '294';
var result2 = '0x0000000000000000000000000000000000000000000000000000000000000123';
var result2Val = '291';
var counter = 0;
var callback = function (err, r) {
counter++;
assert.deepEqual(r, resultVal);
};
var callback2 = function (err, r) {
assert.equal(counter, 1);
assert.deepEqual(r, result2Val);
};
var callback3 = function (err, r) {
counter++;
assert.equal(counter, 2);
assert.deepEqual(r, result2Val);
done();
};
provider.injectValidation(function (payload) {
assert.equal(payload[0].method, 'eth_getBalance');
assert.deepEqual(payload[0].params, ['0x0000000000000000000000000000000000000022', 'latest']);
assert.equal(payload[1].method, 'eth_call');
assert.deepEqual(payload[1].params, [{
'to': '0x1000000000000000000000000000000000000001',
'data': '0xe3d670d70000000000000000000000001000000000000000000000000000000000000001'
},
'latest' // default block
]);
assert.equal(payload[2].method, 'eth_call');
assert.deepEqual(payload[2].params, [{
'to': '0x1000000000000000000000000000000000000001',
'from': '0x1000000000000000000000000000000000000002',
'data': '0xe3d670d70000000000000000000000001000000000000000000000000000000000000001'
},
'latest' // default block
]);
assert.equal(payload[3].method, 'eth_call');
assert.deepEqual(payload[3].params, [{
'to': '0x1000000000000000000000000000000000000001',
'from': '0x1000000000000000000000000000000000000003',
'data': '0xe3d670d70000000000000000000000001000000000000000000000000000000000000001'
},
'0xa' // default block
]);
assert.equal(payload[4].method, 'eth_call');
assert.deepEqual(payload[4].params, [{
'to': '0x1000000000000000000000000000000000000001',
'data': '0xe3d670d70000000000000000000000001000000000000000000000000000000000000001'
},
'0xa' // default block
]);
});
var batch = new web3.BatchRequest();
batch.add(web3.eth.getBalance.request('0x0000000000000000000000000000000000000022', 'latest', callback));
batch.add(new web3.eth.Contract(abi, address).methods.balance(address).call.request(callback2));
batch.add(new web3.eth.Contract(abi, address).methods.balance(address).call.request({from: '0x1000000000000000000000000000000000000002'}, callback2));
batch.add(new web3.eth.Contract(abi, address).methods.balance(address).call.request({from: '0x1000000000000000000000000000000000000003'}, 10, callback2));
batch.add(new web3.eth.Contract(abi, address).methods.balance(address).call.request(10, callback3));
provider.injectBatchResults([result, result2, result2, result2, result2]);
batch.execute();
});
it('should execute batch requests and receive errors', function (done) {
var provider = new FakeIpcProvider();
var web3 = new Web3(provider);
var abi = [{
"name": "balance",
"type": "function",
"inputs": [{
"name": "who",
"type": "address"
}],
"constant": true,
"outputs": [{
"name": "value",
"type": "uint256"
}]
}];
var address = '0x1000000000000000000000000000000000000001';
var result = 'Something went wrong';
var result2 = 'Something went wrong 2';
var counter = 0;
var callback = function (err, r) {
counter++;
assert.isNotNull(err);
};
var callback2 = function (err, r) {
assert.equal(counter, 1);
assert.isNotNull(err);
done();
};
provider.injectValidation(function (payload) {
var first = payload[0];
var second = payload[1];
assert.equal(first.method, 'eth_getBalance');
assert.deepEqual(first.params, ['0x0000000000000000000000000000000000000000', 'latest']);
assert.equal(second.method, 'eth_call');
assert.deepEqual(second.params, [{
'to': '0x1000000000000000000000000000000000000001',
'from': '0x0000000000000000000000000000000000000000',
'data': '0xe3d670d70000000000000000000000001000000000000000000000000000000000000001'
},
'0xa']);
});
var batch = new web3.BatchRequest();
batch.add(web3.eth.getBalance.request('0x0000000000000000000000000000000000000000', 'latest', callback));
batch.add(new web3.eth.Contract(abi, address).methods.balance(address).call.request({from: '0x0000000000000000000000000000000000000000'}, 10, callback2));
provider.injectBatchResults([result, result2], true); // injects error
batch.execute();
});
it('should propagate output formatter error to callback', function(done) {
const provider = new FakeIpcProvider();
const web3 = new Web3(provider);
const abi = [{
name: 'symbol',
type: 'function',
inputs: [],
constant: true,
outputs: [{
name: 'symbol',
type: 'string'
}]
}];
const address = '0x1000000000000000000000000000000000000001';
const result = '0x0000000000000000000000000000000000000000000000000000000000000123';
const callback = (err, _r) => {
assert.isNotNull(err);
done();
};
provider.injectValidation((payload) => {
assert.equal(payload[0].method, 'eth_call');
assert.deepEqual(payload[0].params, [{
to: '0x1000000000000000000000000000000000000001',
data: '0x95d89b41'
},
'latest']);
});
const batch = new web3.BatchRequest();
batch.add(new web3.eth.Contract(abi, address)
.methods.symbol()
.call.request(callback));
provider.injectBatchResults([result]); // no explicit error, it'll be thrown when formatting
batch.execute();
});
it('should execute batch request with provider that supports sendAsync', function (done) {
var provider = new FakeIpcProvider();
var web3 = new Web3(provider);
provider.sendAsync = provider.send
provider.send = () => { throw new Error('send was called instead of sendAsync') }
var result = '0x126';
var resultVal = '294';
var result2 = '0x127';
var result2Val = '295';
provider.injectBatchResults([result, result2]);
var counter = 0;
var callback = function (err, r) {
counter++;
assert.deepEqual(r, resultVal);
};
var callback2 = function (err, r) {
assert.equal(counter, 1);
assert.deepEqual(r, result2Val);
done();
};
provider.injectValidation(function (payload) {
var first = payload[0];
var second = payload[1];
assert.equal(first.method, 'eth_getBalance');
assert.deepEqual(first.params, ['0x0000000000000000000000000000000000000000', 'latest']);
assert.equal(second.method, 'eth_getBalance');
assert.deepEqual(second.params, ['0x0000000000000000000000000000000000000005', 'latest']);
});
var batch = new web3.BatchRequest();
batch.add(web3.eth.getBalance.request('0x0000000000000000000000000000000000000000', 'latest', callback));
batch.add(web3.eth.getBalance.request('0x0000000000000000000000000000000000000005', 'latest', callback2));
batch.execute();
});
});
});