assertFalse(Strings.validSurrogatePairAt("x\uDCAB", 0));
    assertFalse(Strings.validSurrogatePairAt("\uD8ABx", 0));
  }

  @SuppressWarnings("LenientFormatStringValidation") // Intentional for testing.
  public void testLenientFormat() {
    assertThat(Strings.lenientFormat("%s")).isEqualTo("%s");
    assertThat(Strings.lenientFormat("%s", 5)).isEqualTo("5");

    assertFalse(Strings.validSurrogatePairAt("x\uDCAB", 0));
    assertFalse(Strings.validSurrogatePairAt("\uD8ABx", 0));
  }

  @SuppressWarnings("LenientFormatStringValidation") // Intentional for testing.
  public void testLenientFormat() {
    assertThat(Strings.lenientFormat("%s")).isEqualTo("%s");
    assertThat(Strings.lenientFormat("%s", 5)).isEqualTo("5");

    assertEquals(Range.closed(4, 12), range.span(Range.closed(10, 12)));
    assertEquals(Range.atLeast(4), range.span(Range.atLeast(10)));
  }

  @SuppressWarnings({"InlineMeInliner", "deprecation"}) // intentional test of depecated method
  public void testPredicateMethods() {
    Range<Integer> predicate = Range.closed(2, 3);

    assertFalse(predicate.apply(1));
    assertTrue(predicate.apply(2));

import org.jspecify.annotations.Nullable;

/**
 * Unit test for {@link Preconditions}.
 *
 * @author Kevin Bourrillion
 * @author Jared Levy
 */
@NullMarked
@SuppressWarnings("LenientFormatStringValidation") // Intentional for testing
@GwtCompatible
public class PreconditionsTest extends TestCase {
  public void testCheckArgument_simple_success() {
    checkArgument(true);
  }

  public void testCheckArgument_simple_failure() {

import org.jspecify.annotations.Nullable;

/**
 * Unit test for {@link Preconditions}.
 *
 * @author Kevin Bourrillion
 * @author Jared Levy
 */
@NullMarked
@SuppressWarnings("LenientFormatStringValidation") // Intentional for testing
@GwtCompatible
public class PreconditionsTest extends TestCase {
  public void testCheckArgument_simple_success() {
    checkArgument(true);
  }

  public void testCheckArgument_simple_failure() {

The report will explain the errors in detail.
Perhaps, you forgot to add an `@Incubating` annotation or `@since` in the javadoc.

2. Accept the changes.\
If you are sure that the changes are intentional, follow the steps described in the report.
This includes adding the description of the changes to the `accepted-public-api-changes.json` file, and providing a reason for each change.

    assertEquals(Range.closed(4, 12), range.span(Range.closed(10, 12)));
    assertEquals(Range.atLeast(4), range.span(Range.atLeast(10)));
  }

  @SuppressWarnings({"InlineMeInliner", "deprecation"}) // intentional test of depecated method
  public void testPredicateMethods() {
    Range<Integer> predicate = Range.closed(2, 3);

    assertFalse(predicate.apply(1));
    assertTrue(predicate.apply(2));

/**
 * Unit test for {@code Maps}.
 *
 * @author Kevin Bourrillion
 * @author Mike Bostock
 * @author Jared Levy
 */
@GwtCompatible
@NullMarked
@SuppressWarnings("JUnitIncompatibleType") // Many intentional violations here.
public class MapsTest extends TestCase {

  private static final Comparator<Integer> SOME_COMPARATOR = Collections.reverseOrder();

  public void testHashMap() {

## What we expect from contributors

1. **Understand the content you submit, PRs as well as issues, and be able to explain it.** Our goal is for humans to use AI tools intentionally and with full control, rather than merely serving as proxies for AI agents. If you cannot explain the reason for something, we will assume you do not understand it, and the PR or issue will likely be closed.

    }

    @Test
    public void test_toLowercaseWildcard_internationalCharacters() {
        queryCommand.setLowercaseWildcard(true);

        // Test with various international characters
        assertEquals("äöü", queryCommand.toLowercaseWildcard("ÄÖÜ"));
        assertEquals("日本語", queryCommand.toLowercaseWildcard("日本語")); // Japanese doesn't change