val source = response.body.source()
      assertThat(response.header("h1")).isEqualTo("v1")
      assertThat(response.peekTrailers()).isNull()
      assertFailsWith<IOException> {
        source.readUtf8()
      }
      try {
        assertThat(response.peekTrailers()).isNull() // Okay. This is what HTTP/1 does.
      } catch (_: IOException) {
        // Also okay. This is what HTTP/2 does.
      }

    assertThat(graph.edgeValue(2, 1).orElse(DEFAULT)).isEqualTo(DEFAULT);
    assertThat(graph.edgeValueOrDefault(1, 2, null)).isNull();
    assertThat(graph.edgeValueOrDefault(2, 1, null)).isNull();
    assertThat(graph.edgeValue(1, 2).orElse(null)).isNull();
    assertThat(graph.edgeValue(2, 1).orElse(null)).isNull();

    graph.putEdgeValue(1, 2, "valueA");
    graph.putEdgeValue(2, 1, "valueB");

package okhttp3

import assertk.assertThat
import assertk.assertions.containsExactly
import assertk.assertions.hasMessage
import assertk.assertions.isEmpty
import assertk.assertions.isEqualTo
import assertk.assertions.isNull
import java.io.IOException
import java.security.cert.Certificate
import kotlin.test.assertFailsWith
import okhttp3.Handshake.Companion.handshake
import okhttp3.tls.HeldCertificate
import org.junit.jupiter.api.Test

import assertk.assertions.containsExactly
import assertk.assertions.containsExactlyInAnyOrder
import assertk.assertions.hasMessage
import assertk.assertions.isEqualTo
import assertk.assertions.isInstanceOf
import assertk.assertions.isNull
import java.io.EOFException
import java.io.File
import java.io.IOException
import java.net.InetAddress
import java.net.UnknownHostException
import java.util.concurrent.TimeUnit
import kotlin.reflect.KClass

    assertThat("Thu, 01 Jan 1970 00:00:00".toHttpDateOrNull()).isNull()
    // Missing seconds treated as bad.
    assertThat("Thu, 01 Jan 1970 00:00 GMT".toHttpDateOrNull()).isNull()
    // Extra spaces treated as bad.
    assertThat("Thu,  01 Jan 1970 00:00 GMT".toHttpDateOrNull()).isNull()
    // Missing leading zero treated as bad.
    assertThat("Thu, 1 Jan 1970 00:00 GMT".toHttpDateOrNull()).isNull()

    // RFC 850, obsoleted by RFC 1036 with any TZ.

    assertThat(response.handshake!!.localCertificates).isEmpty()
    assertThat(response.handshake!!.localPrincipal).isNull()
    assertThat(response.handshake!!.peerCertificates).isEmpty()
    assertThat(response.handshake!!.peerPrincipal).isNull()
  }

  @Test fun `bad certificates host in insecureHosts fails with SSLException`() {
    val heldCertificate =
      HeldCertificate
        .Builder()

  fun assertNoNetworkResponse() =
    apply {
      assertThat(response!!.networkResponse).isNull()
    }

  /** Asserts that the current response didn't use the cache.  */
  fun assertNoCacheResponse() =
    apply {
      assertThat(response!!.cacheResponse).isNull()
    }

  /**
   * Asserts that the current response used the cache and returns the cache response.
   */

    assertThat(graph.removeEdge(1, 2)).isEqualTo("valueA");
    assertThat(graph.removeEdge(1, 2)).isNull();
    assertThat(graph.removeEdge(2, 1)).isEqualTo("valueB");
    assertThat(graph.removeEdge(2, 1)).isNull();
    assertThat(graph.removeEdge(2, 3)).isEqualTo("valueC");
    assertThat(graph.removeEdge(2, 3)).isNull();
  }

  @Test
  public void removeEdge_undirected() {

    assertFalse(testTable.containsValue(""));
  }

  public void testGet() {
    assertEquals("blah", testTable.get('a', 1));
    assertThat(testTable.get('a', 2)).isNull();
    assertThat(testTable.get('A', 1)).isNull();
    assertThat(testTable.get('A', 2)).isNull();
  }

  public void testIsEmpty() {
    assertFalse(testTable.isEmpty());
  }

  public void testSize() {
    assertEquals(1, testTable.size());

        // Arrange
        when(tree.send(isNull())).thenThrow(new CIFSException("null request"));

        // Act
        CIFSException ex = assertThrows(CIFSException.class, () -> tree.send(null));

        // Assert
        assertEquals("null request", ex.getMessage());
        verify(tree).send((Request<CommonServerMessageBlockResponse>) isNull());
    }

    @Test