- Added code for JUnit 5 article

junit5/src/test/java/com/baeldung/AssumptionTest.java

@@ -2,6 +2,7 @@ package com.baeldung;
 
 import org.junit.gen5.api.Test;
 
+import static org.junit.gen5.api.Assertions.assertEquals;
 import static org.junit.gen5.api.Assumptions.assumeFalse;
 import static org.junit.gen5.api.Assumptions.assumeTrue;
 import static org.junit.gen5.api.Assumptions.assumingThat;
@@ -11,13 +12,13 @@ public class AssumptionTest {
     @Test
     void trueAssumption() {
         assumeTrue(5 > 1);
-        System.out.println("Was true");
+        assertEquals(5 + 2, 7);
     }
 
     @Test
     void falseAssumption() {
         assumeFalse(5 < 1);
-        System.out.println("Was false");
+        assertEquals(5 + 2, 7);
     }
 
     @Test
@@ -25,7 +26,7 @@ public class AssumptionTest {
         String someString = "Just a string";
         assumingThat(
                 someString.equals("Just a string"),
-                () -> System.out.println("Assumption was correct")
+                () -> assertEquals(2 + 2, 4)
         );
     }
 }

junit5/src/test/java/com/baeldung/ExceptionTest.java

@@ -2,6 +2,8 @@ package com.baeldung;
 
 import org.junit.gen5.api.Test;
 
+import java.util.ArrayList;
+
 import static org.junit.gen5.api.Assertions.assertEquals;
 import static org.junit.gen5.api.Assertions.expectThrows;
 
@@ -9,7 +11,8 @@ public class ExceptionTest {
 
     @Test
     void shouldThrowException() {
-        Throwable exception = expectThrows(NullPointerException.class, null);
+        ArrayList list = null;
+        Throwable exception = expectThrows(NullPointerException.class, list::clear);
         assertEquals(exception.getClass(), NullPointerException.class);
     }
 }

junit5/src/test/java/com/baeldung/FirstTest.java

@@ -1,5 +1,6 @@
 package com.baeldung;
 
+import org.junit.gen5.api.Disabled;
 import org.junit.gen5.api.Test;
 
 import static org.junit.gen5.api.Assertions.assertAll;
@@ -11,7 +12,7 @@ class FirstTest {
     @Test
     void lambdaExpressions() {
         String string = "";
-        assertTrue(() -> string.isEmpty(), "String should be empty");
+        assertTrue(string::isEmpty, "String should be empty");
     }
 
     @Test
@@ -24,4 +25,9 @@ class FirstTest {
         });
     }
 
+    @Test
+    @Disabled
+    void disabledTest() {
+        assertTrue(false);
+    }
 }

junit5/src/test/java/com/baeldung/TaggedTest.java

@@ -0,0 +1,16 @@
+package com.baeldung;
+
+import org.junit.gen5.api.Tag;
+import org.junit.gen5.api.Test;
+
+import static org.junit.gen5.api.Assertions.assertEquals;
+
+@Tag("Test case")
+public class TaggedTest {
+
+    @Test
+    @Tag("Method")
+    void testMethod() {
+        assertEquals(2+2, 4);
+    }
+}