assertThat(e).hasMessageThat().contains("toString representation");
  }

  private static void assertErrorMessage(Throwable e, String message) {
    // TODO(kevinb): use a Truth assertion here
    if (!e.getMessage().contains(message)) {
      fail("expected <" + e.getMessage() + "> to contain <" + message + ">");
    }
  }

  /**

package jcifs.internal.smb2.ioctl;

import static org.junit.jupiter.api.Assertions.assertEquals;
import static org.junit.jupiter.api.Assertions.assertNotNull;
import static org.mockito.ArgumentMatchers.any;
import static org.mockito.ArgumentMatchers.anyInt;
import static org.mockito.ArgumentMatchers.eq;
import static org.mockito.Mockito.mock;
import static org.mockito.Mockito.times;
import static org.mockito.Mockito.verify;

package jcifs.http;

import static org.junit.jupiter.api.Assertions.assertDoesNotThrow;
import static org.mockito.ArgumentMatchers.any;
import static org.mockito.ArgumentMatchers.anyBoolean;
import static org.mockito.ArgumentMatchers.anyString;
import static org.mockito.ArgumentMatchers.eq;
import static org.mockito.Mockito.lenient;
import static org.mockito.Mockito.never;
import static org.mockito.Mockito.verify;
import static org.mockito.Mockito.when;

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

import assertk.assertThat
import assertk.assertions.startsWith
import kotlin.test.assertFailsWith
import kotlin.test.fail
import okhttp3.HttpUrl.Companion.toHttpUrl
import okhttp3.internal.idn.Punycode
import okio.Buffer
import okio.ByteString

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

import assertk.assertThat
import assertk.assertions.isEqualTo
import java.util.Random
import kotlin.test.assertFailsWith
import okhttp3.TestUtil.repeat
import okhttp3.internal.format
import okhttp3.internal.ws.WebSocketProtocol.OPCODE_BINARY

    // need a long enough string for the buffer to hit 0 remaining before the copy completes
    String string = Strings.repeat("0123456789", 100);
    StringBuilder b = new StringBuilder();
    // the main assertion of this test is here... the copy will fail if the buffer size goes down
    // each time it is not filled completely
    long copied = CharStreams.copy(newNonBufferFillingReader(new StringReader(string)), b);

    // need a long enough string for the buffer to hit 0 remaining before the copy completes
    String string = Strings.repeat("0123456789", 100);
    StringBuilder b = new StringBuilder();
    // the main assertion of this test is here... the copy will fail if the buffer size goes down
    // each time it is not filled completely
    long copied = CharStreams.copy(newNonBufferFillingReader(new StringReader(string)), b);

import org.codelibs.core.exception.EmptyArgumentException;
import org.codelibs.core.exception.NullArgumentException;
import org.codelibs.core.lang.StringUtil;

/**
 * Utility class for assertions.
 *
 * @author shot
 */
public abstract class AssertionUtil {

    /**
     * Do not instantiate.
     */
    protected AssertionUtil() {
    }

    /**

 */
package okhttp3

import assertk.assertThat
import assertk.assertions.containsExactly
import assertk.assertions.isCloseTo
import assertk.assertions.isEmpty
import assertk.assertions.isEqualTo
import assertk.assertions.isFalse
import assertk.assertions.isNotNull
import assertk.assertions.isNull
import assertk.assertions.isTrue
import java.io.IOException
import java.net.CookieManager

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

import assertk.assertThat
import assertk.assertions.isEqualTo
import assertk.fail
import java.io.IOException
import java.net.InetAddress
import java.net.InetSocketAddress
import java.net.Proxy
import java.security.cert.X509Certificate
import java.util.Arrays