import com.google.common.collect.testing.features.ListFeature;
import java.util.Collections;
import java.util.EnumSet;
import java.util.List;
import java.util.Map.Entry;
import java.util.Set;
import junit.framework.TestSuite;

/**
 * Creates, based on your criteria, a JUnit test suite that exhaustively tests a {@code
 * ListMultimap} implementation.
 *
 * @author Louis Wasserman
 */
@GwtIncompatible

There have been many tools created before that have helped inspire its creation.

I have been avoiding the creation of a new framework for several years. First I tried to solve all the features covered by **FastAPI** using many different frameworks, plug-ins, and tools.

import com.google.common.collect.testing.features.MapFeature;
import com.google.common.collect.testing.testers.TestExceptions.SomeUncheckedException;
import java.util.Map;
import junit.framework.AssertionFailedError;
import org.junit.Ignore;

/**
 * A generic JUnit test which tests {@link Map#computeIfAbsent}. Can't be invoked directly; please
 * see {@link com.google.common.collect.testing.MapTestSuiteBuilder}.

import com.google.common.collect.testing.features.Feature;
import java.util.Collections;
import java.util.EnumSet;
import java.util.List;
import java.util.Map.Entry;
import java.util.Set;
import junit.framework.TestSuite;

/**
 * Creates, based on your criteria, a JUnit test suite that exhaustively tests a {@code SetMultimap}
 * implementation.
 *
 * @author Louis Wasserman
 */
@GwtIncompatible

import static org.mockito.Mockito.when;

import com.google.common.testing.NullPointerTester;
import java.io.ByteArrayInputStream;
import java.util.Arrays;
import junit.framework.TestCase;

/**
 * Tests for {@link HashingInputStream}.
 *
 * @author Qian Huang
 */
public class HashingInputStreamTest extends TestCase {
  private Hasher hasher;
  private HashFunction hashFunction;

import static com.google.common.truth.Truth.assertThat;

import com.google.common.base.Predicates;
import com.google.common.collect.ImmutableList;
import java.util.Arrays;
import java.util.List;
import junit.framework.TestCase;

/**
 * Unit tests for {@link AbstractPackageSanityTests}.
 *
 * @author Ben Yu
 */
public class AbstractPackageSanityTestsTest extends TestCase {
  /*

import java.util.NoSuchElementException;
import java.util.concurrent.CancellationException;
import java.util.concurrent.ExecutionException;
import java.util.concurrent.TimeoutException;
import junit.framework.AssertionFailedError;
import org.checkerframework.checker.nullness.qual.Nullable;

/** Replacements for JUnit's {@code assertThrows} that work under GWT/J2CL. */
@GwtCompatible(emulated = true)

 * limitations under the License.
 */

package com.google.common.collect;

import static com.google.common.collect.Hashing.smear;

import com.google.common.annotations.GwtCompatible;
import junit.framework.TestCase;

/** Tests for {@code Hashing}. */
@GwtCompatible
@ElementTypesAreNonnullByDefault
public class HashingTest extends TestCase {
  public void testSmear() {
    assertEquals(1459320713, smear(754102528));

 *   <li>{@code getElement} on a {@code Multiset.Entry<@Nullable String>} returns {@code @Nullable
 *       String}.
 * </ul>
 *
 * This is the same behavior as type-variable usages have to Kotlin and to the Checker Framework.
 * Contrast the method above to:
 *
 * <ul>
 *   <li>methods whose return type is a type variable but which can never return {@code null},

import java.util.NoSuchElementException;
import java.util.concurrent.CancellationException;
import java.util.concurrent.ExecutionException;
import java.util.concurrent.TimeoutException;
import junit.framework.AssertionFailedError;
import org.checkerframework.checker.nullness.qual.Nullable;

/** Replacements for JUnit's {@code assertThrows} that work under GWT/J2CL. */
@GwtCompatible(emulated = true)