spring junit config (#3124)

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

@@ -0,0 +1,33 @@
+package com.baeldung.jupiter;
+
+import static org.junit.Assert.assertNotNull;
+
+import org.junit.jupiter.api.Test;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.context.ApplicationContext;
+import org.springframework.context.annotation.Configuration;
+import org.springframework.test.context.junit.jupiter.SpringJUnitConfig;
+
+/**
+ * @SpringJUnitConfig(SpringJUnitConfigTest.Config.class) is equivalent to:
+ * 
+ * @ExtendWith(SpringExtension.class)
+ * @ContextConfiguration(classes = SpringJUnitConfigTest.Config.class )
+ *
+ */
+@SpringJUnitConfig(SpringJUnitConfigTest.Config.class)
+public class SpringJUnitConfigTest {
+
+    @Configuration
+    static class Config {
+    }
+
+    @Autowired
+    private ApplicationContext applicationContext;
+
+    @Test
+    void givenAppContext_WhenInjected_ThenItShouldNotBeNull() {
+        assertNotNull(applicationContext);
+    }
+
+}

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

@@ -0,0 +1,34 @@
+package com.baeldung.jupiter;
+
+import static org.junit.Assert.assertNotNull;
+
+import org.junit.jupiter.api.Test;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.context.annotation.Configuration;
+import org.springframework.test.context.junit.jupiter.web.SpringJUnitWebConfig;
+import org.springframework.web.context.WebApplicationContext;
+
+/**
+ * @SpringJUnitWebConfig(SpringJUnitWebConfigTest.Config.class) is equivalent to:
+ * 
+ * @ExtendWith(SpringExtension.class)
+ * @WebAppConfiguration
+ * @ContextConfiguration(classes = SpringJUnitWebConfigTest.Config.class )
+ *
+ */
+@SpringJUnitWebConfig(SpringJUnitWebConfigTest.Config.class)
+public class SpringJUnitWebConfigTest {
+
+    @Configuration
+    static class Config {
+    }
+
+    @Autowired
+    private WebApplicationContext webAppContext;
+
+    @Test
+    void givenWebAppContext_WhenInjected_ThenItShouldNotBeNull() {
+        assertNotNull(webAppContext);
+    }
+
+}