Merge pull request #6918 from Doha2012/master

add junit5 method order examples

testing-modules/junit-5/pom.xml

@@ -21,11 +21,21 @@
             <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>

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")
         );
     }
 

testing-modules/junit-5/src/test/java/com/baeldung/junit5/order/AlphanumericOrderUnitTest.java

@@ -0,0 +1,33 @@
+package com.baeldung.junit5.order;
+
+import static org.junit.Assert.assertEquals;
+
+import org.junit.jupiter.api.AfterAll;
+import org.junit.jupiter.api.MethodOrderer.Alphanumeric;
+import org.junit.jupiter.api.Test;
+import org.junit.jupiter.api.TestMethodOrder;
+
+@TestMethodOrder(Alphanumeric.class)
+public class AlphanumericOrderUnitTest {
+    private static StringBuilder output = new StringBuilder("");
+    
+    @Test
+    public void myATest() {
+        output.append("A");
+    }
+    
+    @Test
+    public void myBTest() {
+        output.append("B");        
+    }
+    
+    @Test
+    public void myaTest() {
+        output.append("a");
+    }
+ 
+    @AfterAll
+    public static void assertOutput() {
+        assertEquals(output.toString(), "ABa");
+    }
+}

testing-modules/junit-5/src/test/java/com/baeldung/junit5/order/CustomOrder.java

@@ -0,0 +1,12 @@
+package com.baeldung.junit5.order;
+
+import org.junit.jupiter.api.MethodDescriptor;
+import org.junit.jupiter.api.MethodOrderer;
+import org.junit.jupiter.api.MethodOrdererContext;
+
+public class CustomOrder implements MethodOrderer{
+    @Override
+    public void orderMethods(MethodOrdererContext context) {
+        context.getMethodDescriptors().sort((MethodDescriptor m1, MethodDescriptor m2)->m1.getMethod().getName().compareToIgnoreCase(m2.getMethod().getName()));
+    }
+}

testing-modules/junit-5/src/test/java/com/baeldung/junit5/order/CustomOrderUnitTest.java

@@ -0,0 +1,33 @@
+package com.baeldung.junit5.order;
+
+import static org.junit.Assert.assertEquals;
+
+import org.junit.jupiter.api.AfterAll;
+import org.junit.jupiter.api.Test;
+import org.junit.jupiter.api.TestMethodOrder;
+
+@TestMethodOrder(CustomOrder.class)
+public class CustomOrderUnitTest {
+    private static StringBuilder output = new StringBuilder("");
+    
+    @Test
+    public void myATest() {
+        output.append("A");
+    }
+    
+    @Test
+    public void myBTest() {
+        output.append("B");        
+    }
+    
+    @Test
+    public void myaTest() {
+        output.append("a");
+    }
+
+ 
+    @AfterAll
+    public static void assertOutput() {
+        assertEquals(output.toString(), "AaB");
+    }
+}

testing-modules/junit-5/src/test/java/com/baeldung/junit5/order/OrderAnnotationUnitTest.java

@@ -0,0 +1,37 @@
+package com.baeldung.junit5.order;
+
+import static org.junit.Assert.assertEquals;
+
+import org.junit.jupiter.api.AfterAll;
+import org.junit.jupiter.api.MethodOrderer.OrderAnnotation;
+import org.junit.jupiter.api.Order;
+import org.junit.jupiter.api.Test;
+import org.junit.jupiter.api.TestMethodOrder;
+
+@TestMethodOrder(OrderAnnotation.class)
+public class OrderAnnotationUnitTest {
+    private static StringBuilder output = new StringBuilder("");
+    
+    @Test
+    @Order(1)    
+    public void firstTest() {
+        output.append("a");
+    }
+    
+    @Test
+    @Order(2)    
+    public void secondTest() {
+        output.append("b");
+    }
+ 
+    @Test
+    @Order(3)    
+    public void thirdTest() {
+        output.append("c");
+    }
+ 
+    @AfterAll
+    public static void assertOutput() {
+        assertEquals(output.toString(), "abc");
+    }
+}