added eth_hashrate

lib/web3/eth.js

@@ -224,6 +224,11 @@ var properties = [
         name: 'mining',
         getter: 'eth_mining'
     }),
+    new Property({
+        name: 'hashrate',
+        getter: 'eth_hashrate',
+        outputFormatter: utils.toDecimal
+    }),
     new Property({
         name: 'gasPrice',
         getter: 'eth_gasPrice',

test/web3.eth.hashRate.js

@@ -0,0 +1,38 @@
+var chai = require('chai');
+var assert = chai.assert;
+var web3 = require('../index');
+var FakeHttpProvider = require('./helpers/FakeHttpProvider');
+
+var method = 'hashrate';
+
+var tests = [{
+    result: '0x788a8',
+    formattedResult: 493736,
+    call: 'eth_'+ method
+}];
+
+describe('web3.eth', function () {
+    describe(method, function () {
+        tests.forEach(function (test, index) {
+            it('property test: ' + index, function () {
+
+                // given
+                var provider = new FakeHttpProvider();
+                web3.setProvider(provider);
+                provider.injectResult(test.result);
+                provider.injectValidation(function (payload) {
+                    assert.equal(payload.jsonrpc, '2.0');
+                    assert.equal(payload.method, test.call);
+                    assert.deepEqual(payload.params, []);
+                });
+
+                // when
+                var result = web3.eth[method];
+
+                // then
+                assert.strictEqual(test.formattedResult, result);
+            });
+        });
+    });
+});
+