BAEL-1247 Spring XML injection. (#2901)

spring-core/src/test/java/com/baeldung/di/spring/BeanInjectionTest.java

@@ -0,0 +1,45 @@
+package com.baeldung.di.spring;
+
+import static org.junit.Assert.*;
+import org.junit.Before;
+import org.junit.Test;
+import org.springframework.context.ApplicationContext;
+import org.springframework.context.support.ClassPathXmlApplicationContext;
+
+public class BeanInjectionTest {
+
+    private ApplicationContext applicationContext;
+
+    @Before
+    public void setUp() throws Exception {
+        applicationContext = new ClassPathXmlApplicationContext("com.baeldung.di.spring.xml");
+    }
+
+    @Test
+    public void protoBean_getBean_returnsMultipleInstance() {
+        final MessageApp messageApp1 = applicationContext.getBean("messageWorldApp", MessageApp.class);
+        final MessageApp messageApp2 = applicationContext.getBean("messageWorldApp", MessageApp.class);
+        assertNotEquals(messageApp1, messageApp2);
+    }
+
+    @Test
+    public void protoFactoryMethod_getBean_returnsMultipleInstance() {
+        final IndexApp indexApp1 = applicationContext.getBean("indexAppWithFactoryMethod", IndexApp.class);
+        final IndexApp indexApp2 = applicationContext.getBean("indexAppWithFactoryMethod", IndexApp.class);
+        assertNotEquals(indexApp1, indexApp2);
+    }
+
+    @Test
+    public void protoStaticFactory_getBean_returnsMultipleInstance() {
+        final IndexApp indexApp1 = applicationContext.getBean("indexAppWithStaticFactory", IndexApp.class);
+        final IndexApp indexApp2 = applicationContext.getBean("indexAppWithStaticFactory", IndexApp.class);
+        assertNotEquals(indexApp1, indexApp2);
+    }
+
+    @Test
+    public void singletonBean_getBean_returnsSingleInstance() {
+        final IndexApp indexApp1 = applicationContext.getBean("indexApp", IndexApp.class);
+        final IndexApp indexApp2 = applicationContext.getBean("indexApp", IndexApp.class);
+        assertEquals(indexApp1, indexApp2);
+    }
+}