// Test compat address.
    testIp = (Inet6Address) InetAddresses.forString("::1.2.3.4");
    assertTrue(InetAddresses.hasEmbeddedIPv4ClientAddress(testIp));
    InetAddress ipv4 = InetAddresses.forString("1.2.3.4");
    assertEquals(ipv4, InetAddresses.getEmbeddedIPv4ClientAddress(testIp));

    // Test 6to4 address.
    testIp = (Inet6Address) InetAddresses.forString("2002:0102:0304::1");

import okhttp3.internal.platform.Platform.Companion.isAndroid
import okhttp3.testing.PlatformRule
import okhttp3.tls.HeldCertificate
import org.junit.jupiter.api.Test
import org.junit.jupiter.api.extension.RegisterExtension

/**
 * Tests for our hostname verifier. Most of these tests are from AOSP, which itself includes tests
 * from the Apache HTTP Client test suite.
 */
class HostnameVerifierTest {

 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package okhttp.android.test

import android.os.Build
import androidx.test.platform.app.InstrumentationRegistry
import com.google.android.gms.common.GooglePlayServicesNotAvailableException
import com.google.android.gms.security.ProviderInstaller
import com.squareup.moshi.Moshi

  }

  @J2ktIncompatible
  @GwtIncompatible // NullPointerTester
  public void testNullPointers() {
    NullPointerTester tester = new NullPointerTester();
    tester.setDefault(double.class, 3.0);
    tester.testAllPublicStaticMethods(DoubleMath.class);
  }

- we need to deal with a shared context for plugins, like the guarded mojos
- we need to deal with plugins as core application logic which can also interact with plugins

* Along with this comes the testing strategies that make this work
* The repository model where plugins can be stored and cataloged
* Bridging this into an OSGi system: if this could be done then we can basically take over p2

TODO

import okhttp3.Request
import okhttp3.internal.platform.Platform.Companion.get
import okhttp3.testing.PlatformRule
import okhttp3.tls.HandshakeCertificates
import okhttp3.tls.HeldCertificate
import okhttp3.tls.internal.TlsUtil.newKeyManager
import okhttp3.tls.internal.TlsUtil.newTrustManager
import org.junit.jupiter.api.BeforeEach
import org.junit.jupiter.api.Test
import org.junit.jupiter.api.extension.RegisterExtension

    assertEquals(0, ArbitraryInstances.get(DoubleBuffer.class).capacity());
    ArbitraryInstances.get(PrintStream.class).println("test");
    ArbitraryInstances.get(PrintWriter.class).println("test");
    assertNotNull(ArbitraryInstances.get(File.class));
    assertFreshInstanceReturned(
        ByteArrayOutputStream.class, OutputStream.class,
        Writer.class, StringWriter.class,

  @GwtIncompatible // NullPointerTester
  public void testNullPointers() {
    NullPointerTester tester = new NullPointerTester();
    tester.setDefault(int.class, 1);
    tester.testAllPublicStaticMethods(IntMath.class);
  }

  @GwtIncompatible // isPrime is GWT-incompatible
  public void testIsPrime() {
    // Defer correctness tests to Long.isPrime

    // Check the first 100,000 integers
    for (int i = 0; i < 100000; i++) {

   * @return Whether the part is valid
   */
  private static boolean validatePart(String part, boolean isFinalPart) {

    // These tests could be collapsed into one big boolean expression, but
    // they have been left as independent tests for clarity.

    if (part.length() < 1 || part.length() > MAX_DOMAIN_PART_LENGTH) {
      return false;
    }

    /*

     */
    public ImmutableMap<K, V> buildKeepingLast() {
      return build(false);
    }

    @VisibleForTesting // only for testing JDK backed implementation
    ImmutableMap<K, V> buildJdkBacked() {
      checkState(
          valueComparator == null, "buildJdkBacked is only for testing; can't use valueComparator");
      switch (size) {
        case 0:
          return of();
        case 1: