assertFalse(isPositive.apply(null));
    }

    public void test_apply_object() {
        BooleanFunction<Object> isNotNull = obj -> obj != null;

        assertTrue(isNotNull.apply("test"));
        assertTrue(isNotNull.apply(123));
        assertTrue(isNotNull.apply(new Object()));
        assertFalse(isNotNull.apply(null));
    }

    public void test_apply_boolean() {

      other.proxyAddress
    }
    other.use {
      other.start()
      assertThat(other.socketAddress).isNotNull()
      assertThat(other.hostName).isNotNull()
      assertThat(other.port).isNotNull()
      assertThat(other.proxyAddress).isNotNull()
    }
  }

  @Test
  fun startIsIdempotentIfAddressIsConsistent() {
    val other = MockWebServer()

    val call = client.newCall(Request(server.url("/")))
    val response = call.execute()
    assertThat(response.code).isEqualTo(200)
    assertThat(response.handshake!!.cipherSuite).isNotNull()
    assertThat(response.handshake!!.tlsVersion).isNotNull()
    assertThat(response.handshake!!.localCertificates).isEmpty()
    assertThat(response.handshake!!.localPrincipal).isNull()
    assertThat(response.handshake!!.peerCertificates).isEmpty()

    val handshake = request.handshake
    assertThat(handshake!!.tlsVersion).isNotNull()
    assertThat(handshake.cipherSuite).isNotNull()
    assertThat(handshake.localPrincipal).isNotNull()
    assertThat(handshake.localCertificates.size).isEqualTo(1)
    assertThat(handshake.peerPrincipal).isNotNull()
    assertThat(handshake.peerCertificates.size).isEqualTo(1)
  }

  @Test
  fun shutdownTwice() {

    }

  fun assertHandshake() =
    apply {
      val handshake = response!!.handshake!!
      assertThat(handshake.tlsVersion).isNotNull()
      assertThat(handshake.cipherSuite).isNotNull()
      assertThat(handshake.peerPrincipal).isNotNull()
      assertThat(handshake.peerCertificates.size).isEqualTo(1)
      assertThat(handshake.localPrincipal).isNull()

    val client = clientTestRule.newClient()

    // Values should be non-null.
    val a = client.newBuilder().build()
    assertThat(a.dispatcher).isNotNull()
    assertThat(a.connectionPool).isNotNull()
    assertThat(a.sslSocketFactory).isNotNull()
    assertThat(a.x509TrustManager).isNotNull()

    // Multiple clients share the instances.
    val b = client.newBuilder().build()
    assertThat(b.dispatcher).isSameAs(a.dispatcher)

 * limitations under the License.
 */
package okhttp3

import assertk.assertThat
import assertk.assertions.isEqualTo
import assertk.assertions.isFalse
import assertk.assertions.isNotNull
import assertk.assertions.isTrue
import java.io.IOException
import java.io.InterruptedIOException
import java.net.HttpURLConnection
import java.time.Duration
import java.util.concurrent.CountDownLatch

 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package okhttp3.internal.platform

import assertk.assertThat
import assertk.assertions.isNotNull
import assertk.assertions.isNull
import okhttp3.internal.platform.Jdk8WithJettyBootPlatform.Companion.buildIfSupported
import okhttp3.testing.PlatformRule
import org.junit.jupiter.api.Assumptions.assumeFalse

 */
package okhttp.android.test

import assertk.all
import assertk.assertFailure
import assertk.assertions.cause
import assertk.assertions.hasClass
import assertk.assertions.hasMessage
import assertk.assertions.isNotNull
import java.io.IOException
import org.junit.Test
import org.junit.runner.RunWith
import org.junit.runners.JUnit4

/**
 * Android test running with only stubs.
 */
@RunWith(JUnit4::class)

  @Test
  fun buildsWhenJdk9() {
    platform.assumeJdk9()
    assertThat(buildIfSupported()).isNotNull()
  }

  @Test
  fun buildsWhenJdk8() {
    platform.assumeJdk8()
    try {
      SSLSocket::class.java.getMethod("getApplicationProtocol")
      // also present on JDK8 after build 252.
      assertThat(buildIfSupported()).isNotNull()
    } catch (nsme: NoSuchMethodException) {
      assertThat(buildIfSupported()).isNull()
    }