text: var chai = require('chai');
  var assert = chai.assert; 
  var Jsonrpc = require('../lib/web3/jsonrpc');
  
  describe('jsonrpc', function () {
      describe('toPayload', function () {
          it('should create basic payload', function () {
              
              // given 
              var method = 'helloworld';
  
              // when
              var payload = Jsonrpc.toPayload(method);
  
              // then
              assert.equal(payload.jsonrpc, '2.0');
              assert.equal(payload.method, method);
              assert.equal(payload.params instanceof Array, true);
              assert.equal(payload.params.length, 0);
              assert.equal(typeof payload.id, 'number');
          });
          
          it('should create payload with params', function () {
              
              // given 
              var method = 'helloworld1';
              var params = [123, 'test'];
  
              // when
              var payload = Jsonrpc.toPayload(method, params);
  
              // then
              assert.equal(payload.jsonrpc, '2.0');
              assert.equal(payload.method, method);
              assert.equal(payload.params.length, 2);
              assert.equal(payload.params[0], params[0]);
              assert.equal(payload.params[1], params[1]);
              assert.equal(typeof payload.id, 'number');
          });
      });
  });
  