import junit.framework.TestCase;
import org.jspecify.annotations.NullMarked;

/**
 * Unit test for {@link Strings}.
 *
 * @author Kevin Bourrillion
 */
@NullMarked
@GwtCompatible
public class StringsTest extends TestCase {
  public void testNullToEmpty() {
    assertThat(Strings.nullToEmpty(null)).isEqualTo("");
    assertThat(Strings.nullToEmpty("")).isEqualTo("");
    assertThat(Strings.nullToEmpty("a")).isEqualTo("a");

import junit.framework.TestCase;
import org.jspecify.annotations.NullMarked;

/**
 * Unit test for {@link Strings}.
 *
 * @author Kevin Bourrillion
 */
@NullMarked
@GwtCompatible
public class StringsTest extends TestCase {
  public void testNullToEmpty() {
    assertThat(Strings.nullToEmpty(null)).isEqualTo("");
    assertThat(Strings.nullToEmpty("")).isEqualTo("");
    assertThat(Strings.nullToEmpty("a")).isEqualTo("a");

import jcifs.RuntimeCIFSException;

/**
 * Comprehensive test suite for Strings utility class.
 * Tests all string encoding/decoding operations and utility methods.
 */
@DisplayName("Strings Utility Tests")
class StringsTest {

    private static final String TEST_STRING = "Hello World";
    private static final String UNICODE_STRING = "Hello 世界 🌍";
    private static final String ASCII_STRING = "ASCII Test";

    @Nested