merge 2.6.x

dubbo-config/dubbo-config-api/src/test/java/com/alibaba/dubbo/config/ReferenceConfigTest.java

@@ -91,4 +91,45 @@ private class InnerTest {
 
     }
 
+    /**
+     * unit test for dubbo-1765
+     */
+    @Test
+    public void testReferenceRetry() {
+        ApplicationConfig application = new ApplicationConfig();
+        application.setName("test-reference-retry");
+        RegistryConfig registry = new RegistryConfig();
+        registry.setAddress("multicast://224.5.6.7:1234");
+        ProtocolConfig protocol = new ProtocolConfig();
+        protocol.setName("dubbo");
+        ReferenceConfig<DemoService> rc = new ReferenceConfig<DemoService>();
+        rc.setApplication(application);
+        rc.setRegistry(registry);
+        rc.setInterface(DemoService.class.getName());
+        boolean success = false;
+        DemoService demoService = null;
+        try {
+            demoService = rc.get();
+            success = true;
+        } catch (Exception e) {
+            e.printStackTrace();
+        }
+        Assert.assertFalse(success);
+        Assert.assertNull(demoService);
+        ServiceConfig<DemoService> sc = new ServiceConfig<DemoService>();
+        sc.setInterface(DemoService.class);
+        sc.setRef(new DemoServiceImpl());
+        sc.setApplication(application);
+        sc.setRegistry(registry);
+        sc.setProtocol(protocol);
+        try {
+            sc.export();
+            demoService = rc.get();
+            success = true;
+        } catch (Exception e) {
+            e.printStackTrace();
+        }
+        Assert.assertTrue(success);
+        Assert.assertNotNull(demoService);
+    }
 }