JS API interface for parity_chainStatus

js/src/api/rpc/parity/parity.js

@@ -15,7 +15,7 @@
 // along with Parity.  If not, see <http://www.gnu.org/licenses/>.
 
 import { inAddress, inData, inHex, inNumber16, inOptions } from '../../format/input';
-import { outAccountInfo, outAddress, outHistogram, outNumber, outPeers, outTransaction } from '../../format/output';
+import { outAccountInfo, outAddress, outChainStatus, outHistogram, outNumber, outPeers, outTransaction } from '../../format/output';
 
 export default class Parity {
   constructor (transport) {
@@ -44,6 +44,12 @@ export default class Parity {
       .execute('parity_addReservedPeer', encode);
   }
 
+  chainStatus () {
+    return this._transport
+      .execute('parity_chainStatus')
+      .then(outChainStatus);
+  }
+
   changePassword (account, password, newPassword) {
     return this._transport
       .execute('parity_changePassword', inAddress(account), password, newPassword);

js/src/api/rpc/parity/parity.spec.js

@@ -14,6 +14,7 @@
 // You should have received a copy of the GNU General Public License
 // along with Parity.  If not, see <http://www.gnu.org/licenses/>.
 
+import BigNumber from 'bignumber.js';
 import { TEST_HTTP_URL, mockHttp } from '../../../../test/mockRpc';
 import { isBigNumber } from '../../../../test/types';
 
@@ -45,6 +46,22 @@ describe('api/rpc/parity', () => {
     });
   });
 
+  describe('chainStatus', () => {
+    it('retrieves the chain status', () => {
+      mockHttp([{ method: 'parity_chainStatus', reply: {
+        result: {
+          'blockGap': [0x123, 0x456]
+        }
+      } }]);
+
+      return instance.chainStatus().then((result) => {
+        expect(result).to.deep.equal({
+          'blockGap': [new BigNumber(0x123), new BigNumber(0x456)]
+        });
+      });
+    });
+  });
+
   describe('gasFloorTarget', () => {
     it('returns the gasfloor, formatted', () => {
       mockHttp([{ method: 'parity_gasFloorTarget', reply: { result: '0x123456' } }]);