BAEL-1662 Before after annotations junit

testing-modules/junit-5/src/test/java/com/baeldung/migration/junit4/BeforeAndAfterAnnotationsTest.java

@@ -0,0 +1,54 @@
+package com.baeldung.migration.junit4;
+
+import static org.junit.Assert.assertEquals;
+
+import java.util.ArrayList;
+import java.util.List;
+
+import org.junit.After;
+import org.junit.Before;
+import org.junit.Test;
+import org.junit.runner.RunWith;
+import org.junit.runners.JUnit4;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+@RunWith(JUnit4.class)
+public class BeforeAndAfterAnnotationsTest {
+
+    private static final Logger LOG = LoggerFactory.getLogger(BeforeAndAfterAnnotationsTest.class);
+
+    private List<String> list;
+
+    @Before
+    public void init() {
+        LOG.info("startup");
+
+        list = new ArrayList<>();
+        list.add("test1");
+        list.add("test2");
+    }
+
+    @After
+    public void finalize() {
+        LOG.info("finalize");
+
+        list.clear();
+    }
+
+    @Test
+    public void whenCheckingListSizeAtBeginning_ThenSizeEqualsToStartupSize() {
+        LOG.info("executing test");
+        assertEquals(2, list.size());
+
+        list.add("another test");
+    }
+
+    @Test
+    public void whenCheckingListSizeAtBeginningAgain_ThenSizeEqualsToStartupSize() {
+        LOG.info("executing another test");
+        assertEquals(2, list.size());
+
+        list.add("yet another test");
+    }
+}

testing-modules/junit-5/src/test/java/com/baeldung/migration/junit4/BeforeClassAndAfterClassAnnotationsTest.java

@@ -0,0 +1,35 @@
+package com.baeldung.migration.junit4;
+
+import org.junit.AfterClass;
+import org.junit.BeforeClass;
+import org.junit.Test;
+import org.junit.runner.RunWith;
+import org.junit.runners.JUnit4;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+@RunWith(JUnit4.class)
+public class BeforeClassAndAfterClassAnnotationsTest {
+
+    private static final Logger LOG = LoggerFactory.getLogger(BeforeClassAndAfterClassAnnotationsTest.class);
+
+    @BeforeClass
+    public static void setup() {
+        LOG.info("startup - creating DB connection");
+    }
+
+    @AfterClass
+    public static void tearDown() {
+        LOG.info("closing DB connection");
+    }
+
+    @Test
+    public void simpleTest() {
+        LOG.info("simple test");
+    }
+
+    @Test
+    public void anotherSimpleTest() {
+        LOG.info("another simple test");
+    }
+}

testing-modules/junit-5/src/test/java/com/baeldung/migration/junit5/BeforeAllAndAfterAllAnnotationsTest.java

@@ -0,0 +1,35 @@
+package com.baeldung.migration.junit5;
+
+import org.junit.jupiter.api.AfterAll;
+import org.junit.jupiter.api.BeforeAll;
+import org.junit.jupiter.api.Test;
+import org.junit.platform.runner.JUnitPlatform;
+import org.junit.runner.RunWith;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+@RunWith(JUnitPlatform.class)
+public class BeforeAllAndAfterAllAnnotationsTest {
+
+    private static final Logger LOG = LoggerFactory.getLogger(BeforeAllAndAfterAllAnnotationsTest.class);
+
+    @BeforeAll
+    public static void setup() {
+        LOG.info("startup - creating DB connection");
+    }
+
+    @AfterAll
+    public static void tearDown() {
+        LOG.info("closing DB connection");
+    }
+
+    @Test
+    public void simpleTest() {
+        LOG.info("simple test");
+    }
+
+    @Test
+    public void anotherSimpleTest() {
+        LOG.info("another simple test");
+    }
+}

testing-modules/junit-5/src/test/java/com/baeldung/migration/junit5/BeforeEachAndAfterEachAnnotationsTest.java

@@ -0,0 +1,54 @@
+package com.baeldung.migration.junit5;
+
+import static org.junit.Assert.assertEquals;
+
+import java.util.ArrayList;
+import java.util.List;
+
+import org.junit.jupiter.api.AfterEach;
+import org.junit.jupiter.api.BeforeEach;
+import org.junit.jupiter.api.Test;
+import org.junit.platform.runner.JUnitPlatform;
+import org.junit.runner.RunWith;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+@RunWith(JUnitPlatform.class)
+public class BeforeEachAndAfterEachAnnotationsTest {
+
+    private static final Logger LOG = LoggerFactory.getLogger(BeforeEachAndAfterEachAnnotationsTest.class);
+
+    private List<String> list;
+
+    @BeforeEach 
+    public void init() {
+        LOG.info("startup");
+
+        list = new ArrayList<>();
+        list.add("test1");
+        list.add("test2");
+    }
+
+    @AfterEach
+    public void finalize() {
+        LOG.info("finalize");
+
+        list.clear();
+    }
+
+    @Test
+    public void whenCheckingListSizeAtBeginning_ThenSizeEqualsToStartupSize() {
+        LOG.info("executing test");
+        assertEquals(2, list.size());
+
+        list.add("another test");
+    }
+
+    @Test
+    public void whenCheckingListSizeAtBeginningAgain_ThenSizeEqualsToStartupSize() {
+        LOG.info("executing another test");
+        assertEquals(2, list.size());
+
+        list.add("yet another test");
+    }
+}