BAEL-635 Overview of Spring 5 (#1633)

* Overview of Spring 5

* Overview of Spring 5

* BAEL-635 Formatting

spring-5/src/test/java/com/baeldung/jupiter/Spring5JUnit5ComposedAnnotationTests.java

@@ -0,0 +1,38 @@
+package com.baeldung.jupiter;
+
+import com.baeldung.web.reactive.Task;
+import org.junit.jupiter.api.DisplayName;
+import org.junit.jupiter.api.Test;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.context.ApplicationContext;
+
+import java.util.List;
+
+import static org.junit.jupiter.api.Assertions.assertEquals;
+import static org.junit.jupiter.api.Assertions.assertNotNull;
+
+@SpringJUnit5Config(TestConfig.class)
+@DisplayName("@SpringJUnit5Config Tests")
+class Spring5JUnit5ComposedAnnotationTests {
+
+    @Autowired
+    Task task;
+
+    @Autowired
+    List<Task> tasks;
+
+    @Test
+    @DisplayName("ApplicationContext injected into method")
+    void givenAMethodName_whenInjecting_thenApplicationContextInjectedIntoMethod(ApplicationContext applicationContext) {
+        assertNotNull(applicationContext, "ApplicationContext should have been injected into method by Spring");
+        assertEquals(this.task, applicationContext.getBean("taskName", Task.class));
+    }
+
+    @Test
+    @DisplayName("Spring @Beans injected into fields")
+    void givenAnObject_whenInjecting_thenSpringBeansInjected() {
+        assertNotNull(task, "Task should have been @Autowired by Spring");
+        assertEquals("taskName", task.getName(), "Task's name");
+        assertEquals(1, tasks.size(), "Number of Tasks in context");
+    }
+}