* All changes should have an associated GitHub issue and/or a release note.
* Large fixes, where the LOC>100 not withstanding unit tests changes, require subject matter expert approval.

# Backporting fixes

* Cherry-picking is discussed in the original PR and subject-matter experts have approved the backport.

import java.util.List;
import java.util.Map.Entry;
import junit.framework.TestSuite;

/**
 * A generator of {@code TestSuite} instances for testing {@code CharSource} implementations.
 * Generates tests of all methods on a {@code CharSource} given various inputs the source is
 * expected to contain.
 *
 * @author Colin Decker
 */
@AndroidIncompatible // TODO(b/230620681): Make this available (even though we won't run it).

import org.checkerframework.checker.nullness.qual.Nullable;

/**
 * Tests for {@link GcFinalization}.
 *
 * @author Martin Buchholz
 * @author mike nonemacher
 */
@AndroidIncompatible // depends on details of gc

public class GcFinalizationTest extends TestCase {

  // ----------------------------------------------------------------
  // Ordinary tests of successful method execution

import junit.framework.TestSuite;

/**
 * Unit test for {@link Resources}.
 *
 * @author Chris Nokleberg
 */

public class ResourcesTest extends IoTestCase {

  @AndroidIncompatible // wouldn't run anyway, but strip the source entirely because of b/230620681
  public static TestSuite suite() {
    TestSuite suite = new TestSuite();
    suite.addTest(
        ByteSourceTester.tests(

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package com.google.common.collect;

import com.google.common.base.Function;
import com.google.common.testing.ForwardingWrapperTester;
import java.util.ListIterator;
import junit.framework.TestCase;

/**
 * Tests for {@code ForwardingListIterator}.
 *
 * @author Robert Konigsberg
 */
public class ForwardingListIteratorTest extends TestCase {

  @SuppressWarnings("rawtypes")
  public void testForwarding() {

import com.google.common.base.Suppliers;
import com.google.common.cache.LocalCache.Strength;
import com.google.common.testing.EqualsTester;
import junit.framework.TestCase;

/**
 * Tests CacheBuilderSpec. TODO(user): tests of a few invalid input conditions, boundary
 * conditions.
 *
 * @author Adam Winer
 */
public class CacheBuilderSpecTest extends TestCase {
  public void testParse_empty() {

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

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

/**
 * Tests for {@link StandardSystemProperty}.
 *
 * @author Kurt Alfred Kluever
 */
@GwtIncompatible
public class StandardSystemPropertyTest extends TestCase {

  public void testGetKeyMatchesString() {

// along with this program.  If not, see <http://www.gnu.org/licenses/>.

package http

import (
	"fmt"
	"net"
	"runtime"
	"strconv"
	"testing"
)

// Tests for port availability logic written for server startup sequence.
func TestCheckPortAvailability(t *testing.T) {
	if runtime.GOOS != "linux" {
		t.Skip()
	}

  private static HostSpecifier spec(String specifier) {
    return HostSpecifier.fromValid(specifier);
  }

  public void testNulls() {
    final NullPointerTester tester = new NullPointerTester();

    tester.testAllPublicStaticMethods(HostSpecifier.class);
    tester.testAllPublicInstanceMethods(HostSpecifier.fromValid("google.com"));
  }

  private void assertGood(String spec) throws ParseException {