fix: updated instance id to match returned metadata id (#696)

* deps: updated auth library version

* fix: update id on object

* revert auth library change

* renamed test

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src/service-object.ts

@@ -250,6 +250,9 @@ class ServiceObject<T = any> extends EventEmitter {
       const [err, instance] = args;
       if (!err) {
         self.metadata = instance.metadata;
+        if (self.id && instance.metadata) {
+          self.id = instance.metadata.id;
+        }
         args[1] = self; // replace the created `instance` with this one.
       }
       callback!(...(args as {} as [Error, T]));

test/service-object.ts

@@ -175,6 +175,28 @@ describe('ServiceObject', () => {
       serviceObject.create(options, done);
     });
 
+    it('should update id with metadata id', done => {
+      const config = extend({}, CONFIG, {
+        createMethod,
+      });
+      const options = {};
+
+      function createMethod(
+        id: string,
+        options_: {},
+        callback: (err: Error | null, a: {}, b: {}) => void
+      ) {
+        assert.strictEqual(id, config.id);
+        assert.strictEqual(options_, options);
+        callback(null, {metadata: {id: 14}}, {});
+      }
+
+      const serviceObject = new ServiceObject(config);
+      serviceObject.create(options);
+      assert.strictEqual(serviceObject.id, 14);
+      done();
+    });
+
     it('should not require options', done => {
       const config = extend({}, CONFIG, {
         createMethod,