Moved Circular Depenednecy article from spring-mvc-java to spring-core module

spring-core/src/test/java/com/baeldung/circulardependency/CircularDependencyIntegrationTest.java

@@ -0,0 +1,35 @@
+package com.baeldung.circulardependency;
+
+import org.junit.Assert;
+import org.junit.Test;
+import org.junit.runner.RunWith;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.context.ApplicationContext;
+import org.springframework.context.annotation.Bean;
+import org.springframework.test.context.ContextConfiguration;
+import org.springframework.test.context.junit4.SpringJUnit4ClassRunner;
+
+@RunWith(SpringJUnit4ClassRunner.class)
+@ContextConfiguration(classes = { TestConfig.class })
+public class CircularDependencyIntegrationTest {
+
+    @Autowired
+    ApplicationContext context;
+
+    @Bean
+    public CircularDependencyA getCircularDependencyA() {
+        return new CircularDependencyA();
+    }
+
+    @Bean
+    public CircularDependencyB getCircularDependencyB() {
+        return new CircularDependencyB();
+    }
+
+    @Test
+    public void givenCircularDependency_whenSetterInjection_thenItWorks() {
+        final CircularDependencyA circA = context.getBean(CircularDependencyA.class);
+
+        Assert.assertEquals("Hi!", circA.getCircB().getMessage());
+    }
+}

spring-core/src/test/java/com/baeldung/circulardependency/TestConfig.java

@@ -0,0 +1,10 @@
+package com.baeldung.circulardependency;
+
+import org.springframework.context.annotation.ComponentScan;
+import org.springframework.context.annotation.Configuration;
+
+@Configuration
+@ComponentScan(basePackages = { "com.baeldung.circulardependency" })
+public class TestConfig {
+
+}