* NullPointerTester} uses best effort to pick non-null default values for many common JDK and Guava
 * types, and also for interfaces and public classes that have public parameter-less constructors.
 * When the non-null default value for a particular parameter type cannot be provided by {@code
 * NullPointerTester}, the caller can provide a custom non-null default value for the parameter type

 * NullPointerTester} uses best effort to pick non-null default values for many common JDK and Guava
 * types, and also for interfaces and public classes that have public parameter-less constructors.
 * When the non-null default value for a particular parameter type cannot be provided by {@code
 * NullPointerTester}, the caller can provide a custom non-null default value for the parameter type

    }

    default void checksNull(String s) {
      checkNotNull(s);
    }
  }

  public void testInterfaceStaticMethod() {
    NullPointerTester tester = new NullPointerTester();
    tester.testAllPublicStaticMethods(InterfaceStaticMethodChecksNull.class);
    try {
      tester.testAllPublicStaticMethods(InterfaceStaticMethodFailsToCheckNull.class);

 * limitations under the License.
 */

package com.google.common.io;

import static org.junit.Assert.assertThrows;

import com.google.common.testing.NullPointerTester;
import com.google.common.testing.NullPointerTester.Visibility;
import java.io.File;
import java.io.FilenameFilter;
import java.util.regex.PatternSyntaxException;
import junit.framework.TestCase;
import org.jspecify.annotations.NullUnmarked;

  }

  @J2ktIncompatible
  public void testStringConverter_nullPointerTester() throws Exception {
    Converter<String, TestEnum> converter = Enums.stringConverter(TestEnum.class);
    NullPointerTester tester = new NullPointerTester();
    tester.testAllPublicInstanceMethods(converter);
  }

  public void testStringConverter_nullConversions() {
    Converter<String, TestEnum> converter = Enums.stringConverter(TestEnum.class);

       * This would cause NullPointerTester, which calls Class.getDeclaredMethods, to throw
       * NoClassDefFoundError.
       */
      return;
    }
    for (Method method : ParameterTest.class.getDeclaredMethods()) {
      for (Parameter param : Invokable.from(method).getParameters()) {
        new NullPointerTester().testAllPublicInstanceMethods(param);
      }
    }
  }

       * This would cause NullPointerTester, which calls Class.getDeclaredMethods, to throw
       * NoClassDefFoundError.
       */
      return;
    }
    for (Method method : ParameterTest.class.getDeclaredMethods()) {
      for (Parameter param : Invokable.from(method).getParameters()) {
        new NullPointerTester().testAllPublicInstanceMethods(param);
      }
    }
  }

  public void testNewReferenceArray_withNullArray() throws Exception {
    assertThrows(NullPointerException.class, () -> Atomics.newReferenceArray(null));
  }

  public void testNullPointers() {
    NullPointerTester tester = new NullPointerTester();
    tester.testAllPublicConstructors(Atomics.class); // there aren't any
    tester.testAllPublicStaticMethods(Atomics.class);
  }

/**
 * @author Charles Fry
 */
@GwtCompatible
@J2ktIncompatible // MapMaker
@NullUnmarked
public class MapMakerTest extends TestCase {
  @GwtIncompatible // NullPointerTester
  public void testNullParameters() throws Exception {
    NullPointerTester tester = new NullPointerTester();
    tester.testAllPublicInstanceMethods(new MapMaker());
  }

  @GwtIncompatible // threads

    assertThat(queue.remove()).isEqualTo("five");
    assertTrue(queue.isEmpty());
  }

  @J2ktIncompatible
  @GwtIncompatible // NullPointerTester
  public void testNullPointerExceptions() {
    NullPointerTester tester = new NullPointerTester();
    tester.testAllPublicStaticMethods(EvictingQueue.class);
    tester.testAllPublicConstructors(EvictingQueue.class);