nodejsSet added to FakeXHR2 and httpprovider test cases extended

test/helpers/FakeXHR2.js

@@ -7,11 +7,16 @@ var FakeXHR2 = function () {
     this.readyState = 4;
     this.onreadystatechange = null;
     this.async = true;
+    this.agents = {};
     this.headers = {
         'Content-Type': 'text/plain'
     };
 };
 
+FakeXHR2.prototype.nodejsSet = function (agents) {
+    this.agents = agents;
+};
+
 FakeXHR2.prototype.open = function (method, host, async) {
     assert.equal(method, 'POST');
     assert.notEqual(host, null);
@@ -33,6 +38,4 @@ FakeXHR2.prototype.send = function (payload) {
     }
 };
 
-FakeXHR2.prototype.nodejsSet = Function.prototype;
-
 module.exports = {XMLHttpRequest: FakeXHR2};

test/httpprovider.js

@@ -1,5 +1,7 @@
 var chai = require('chai');
 var assert = chai.assert;
+var http = require('http');
+var https = require('https');
 var SandboxedModule = require('sandboxed-module');
 
 SandboxedModule.registerBuiltInSourceTransformer('istanbul');
@@ -11,15 +13,60 @@ var HttpProvider = SandboxedModule.require('../packages/web3-providers-http', {
     singleOnly: true
 });
 
-describe('web3-providers-http', function () {
+describe.only('web3-providers-http', function () {
     describe('prepareRequest', function () {
+        let provider;
+        let result;
+        let options;
+        let agent;
+
         it('should set request header', function () {
-            var provider = new HttpProvider('http://localhost:8545', {headers: [{name: 'Access-Control-Allow-Origin',  value: '*'}]});
-            var result = provider._prepareRequest();
+            provider = new HttpProvider('http://localhost:8545', {headers: [{name: 'Access-Control-Allow-Origin',  value: '*'}]});
+            result = provider._prepareRequest();
 
             assert.equal(typeof result, 'object');
             assert.equal(result.headers['Access-Control-Allow-Origin'], '*');
         });
+
+        it('should use the passed custom http agent', function () {
+            agent = new http.Agent();
+            options = {agent: {http: agent}};
+            provider = new HttpProvider('http://localhost:8545', options);
+            result = provider._prepareRequest();
+
+            assert.equal(typeof result, 'object');
+            assert.equal(result.agents.httpAgent, agent);
+            assert.equal(provider.httpAgent, undefined);
+            assert.equal(provider.httpsAgent, undefined);
+            assert.equal(provider.agent, options.agent);
+        });
+
+        it('should use the passed custom https agent', function () {
+            agent = new https.Agent();
+            options = {agent: {https: agent}};
+            provider = new HttpProvider('http://localhost:8545', options);
+            result = provider._prepareRequest();
+
+            assert.equal(typeof result, 'object');
+            assert.equal(result.agents.httpsAgent, agent);
+            assert.equal(provider.httpAgent, undefined);
+            assert.equal(provider.httpsAgent, undefined);
+            assert.equal(provider.agent, options.agent);
+        });
+
+        it('should use the passed baseUrl', function () {
+            agent = new https.Agent();
+            options = {agent: {https: agent, baseUrl: 'base'}};
+            provider = new HttpProvider('http://localhost:8545', options);
+            result = provider._prepareRequest();
+
+            assert.equal(typeof result, 'object');
+            assert.equal(result.agents.httpsAgent, agent);
+            assert.equal(result.agents.baseUrl, 'base');
+            assert.equal(provider.httpAgent, undefined);
+            assert.equal(provider.httpsAgent, undefined);
+            assert.equal(provider.agent, options.agent);
+        });
     });
 
     describe('send', function () {