add dependencies and cleanup

testing-modules/junit-5/pom.xml

@@ -21,24 +21,34 @@
             <artifactId>junit-platform-engine</artifactId>
             <version>${junit.platform.version}</version>
         </dependency>
+        <dependency>
+            <groupId>org.junit.jupiter</groupId>
+            <artifactId>junit-jupiter-engine</artifactId>
+            <version>${junit.jupiter.version}</version>
+        </dependency>
         <dependency>
             <groupId>org.junit.jupiter</groupId>
             <artifactId>junit-jupiter-params</artifactId>
             <version>${junit.jupiter.version}</version>
         </dependency>
+        <dependency>
+            <groupId>org.junit.jupiter</groupId>
+            <artifactId>junit-jupiter-api</artifactId>
+            <version>${junit.jupiter.version}</version>
+        </dependency>    
         <dependency>
             <groupId>org.junit.platform</groupId>
             <artifactId>junit-platform-runner</artifactId>
             <version>${junit.platform.version}</version>
             <scope>test</scope>
         </dependency>
-        <dependency>
+         <dependency>
             <groupId>org.junit.vintage</groupId>
             <artifactId>junit-vintage-engine</artifactId>
             <version>${junit.vintage.version}</version>
             <scope>test</scope>
         </dependency>
-        <dependency>
+         <dependency>
             <groupId>org.junit.jupiter</groupId>
             <artifactId>junit-jupiter-migrationsupport</artifactId>
             <version>${junit.vintage.version}</version>

testing-modules/junit-5/src/test/java/com/baeldung/AssertionUnitTest.java

@@ -2,7 +2,21 @@ package com.baeldung;
 
 import static java.time.Duration.ofSeconds;
 import static java.util.Arrays.asList;
-import static org.junit.jupiter.api.Assertions.*;
+import static org.junit.jupiter.api.Assertions.assertAll;
+import static org.junit.jupiter.api.Assertions.assertArrayEquals;
+import static org.junit.jupiter.api.Assertions.assertEquals;
+import static org.junit.jupiter.api.Assertions.assertFalse;
+import static org.junit.jupiter.api.Assertions.assertIterableEquals;
+import static org.junit.jupiter.api.Assertions.assertLinesMatch;
+import static org.junit.jupiter.api.Assertions.assertNotEquals;
+import static org.junit.jupiter.api.Assertions.assertNotNull;
+import static org.junit.jupiter.api.Assertions.assertNull;
+import static org.junit.jupiter.api.Assertions.assertSame;
+import static org.junit.jupiter.api.Assertions.assertThrows;
+import static org.junit.jupiter.api.Assertions.assertTimeout;
+import static org.junit.jupiter.api.Assertions.assertTimeoutPreemptively;
+import static org.junit.jupiter.api.Assertions.assertTrue;
+import static org.junit.jupiter.api.Assertions.fail;
 
 import java.util.ArrayList;
 import java.util.LinkedList;
@@ -91,11 +105,12 @@ public class AssertionUnitTest {
 
     @Test
     public void givenMultipleAssertion_whenAssertingAll_thenOK() {
+        Object obj = null;
         assertAll(
            "heading",
            () -> assertEquals(4, 2 * 2, "4 is 2 times 2"),
            () -> assertEquals("java", "JAVA".toLowerCase()),
-           () -> assertEquals(null, null, "null is equal to null")
+           () -> assertEquals(obj, null, "null is equal to null")
         );
     }