fix: move test annotations to separate lines

The test annotations in the following files were on the same line as the method signature:
- samples/native-image-sample/src/test/java/com/example/logging/ITNativeImageLoggingSample.java
- samples/snippets/src/test/java/com/example/logging/LoggingIT.java
- samples/snippets/src/test/java/com/example/logging/LogsIT.java
- samples/snippets/src/test/java/com/example/logging/SinkIT.java

This change moves the annotations to their own lines to improve code readability and adhere to Java coding conventions.

Author: lqiu96

samples/native-image-sample/src/test/java/com/example/logging/ITNativeImageLoggingSample.java

@@ -39,7 +39,8 @@ void tearDown() {
     System.setOut(originalStdOut);
   }
 
-  @Test void testLogging() throws Exception {
+  @Test
+  void testLogging() throws Exception {
     NativeImageLoggingSample.main(new String[] {});
     assertThat(stdOutCaptor.toString("UTF-8"))
         .contains("Logged: This is a log produced by Native Image.");

samples/snippets/src/test/java/com/example/logging/LoggingIT.java

@@ -79,13 +79,15 @@ public static void shutDown() throws Exception {
     logging.close();
   }
 
-  @BeforeEach void setUp() {
+  @BeforeEach
+  void setUp() {
     bout = new ByteArrayOutputStream();
     out = new PrintStream(bout);
     System.setOut(out);
   }
 
-  @AfterEach void tearDown() throws Exception {
+  @AfterEach
+  void tearDown() throws Exception {
     // Clean up created logs
     deleteLog(TEST_LOG);
     System.setOut(null);

samples/snippets/src/test/java/com/example/logging/LogsIT.java

@@ -32,13 +32,15 @@ class LogsIT {
   private ByteArrayOutputStream bout;
   private PrintStream out;
 
-  @BeforeEach void setUp() {
+  @BeforeEach
+  void setUp() {
     bout = new ByteArrayOutputStream();
     out = new PrintStream(bout);
     System.setOut(out);
   }
 
-  @AfterEach void tearDown() {
+  @AfterEach
+  void tearDown() {
     System.setOut(null);
   }
 

samples/snippets/src/test/java/com/example/logging/SinkIT.java

@@ -39,7 +39,8 @@ class SinkIT {
   private Logging logging = LoggingOptions.getDefaultInstance().getService();
   private static final String SINK_NAME = "test-sink" + UUID.randomUUID().toString();
 
-  @BeforeEach void setUp() {
+  @BeforeEach
+  void setUp() {
     // Create sink
     logging.create(
         SinkInfo.newBuilder(SINK_NAME, SinkInfo.Destination.DatasetDestination.of("dataset"))
@@ -48,13 +49,15 @@ class SinkIT {
             .build());
   }
 
-  @AfterEach void tearDown() throws Exception {
+  @AfterEach
+  void tearDown() throws Exception {
     // Delete sink
     logging.deleteSink(SINK_NAME);
     logging.close();
   }
 
-  @Test void testGetSinkMetadata() throws Exception {
+  @Test
+  void testGetSinkMetadata() throws Exception {
     Sink sink = logging.getSink(SINK_NAME);
     assertNotNull(sink);
     PrintStream standardOut = System.out;