feat: add isOwner to the wrappers for convenience

Author: Victor Wiebe

src/contract_wrappers/tokens/__tests__/security_token_wrapper.test.ts

@@ -322,6 +322,27 @@ describe('SecurityTokenWrapper', () => {
     });
   });
 
+
+  describe('isOwner', () => {
+    test('should call to isOwner', async () => {
+      const expectedResult = true;
+      // Mocked method
+      const mockedMethod = mock(MockedCallMethod);
+      // Stub the method
+      when(mockedContract.isOwner).thenReturn(instance(mockedMethod));
+      // Stub the request
+      when(mockedMethod.callAsync()).thenResolve(expectedResult);
+
+      // Real call
+      const result = await target.isOwner();
+      // Result expectation
+      expect(result).toBe(expectedResult);
+      // Verifications
+      verify(mockedContract.isOwner).once();
+      verify(mockedMethod.callAsync()).once();
+    });
+  });
+
   describe('isControllable', () => {
     test('should call to isControllable', async () => {
       const expectedResult = true;

src/contract_wrappers/tokens/security_token_wrapper.ts

@@ -956,6 +956,10 @@ export default class SecurityTokenWrapper extends ERC20TokenWrapper {
     return (await this.contract).isIssuable.callAsync();
   };
 
+  public isOwner = async (): Promise<boolean> => {
+    return (await this.contract).isOwner.callAsync();
+  };
+
   public isControllable = async () => {
     return (await this.contract).isControllable.callAsync();
   };