1. Script the mocks.
2. Run application code.
3. Verify that the expected requests were made.

Here's a complete example:

```java
public void test() throws Exception {
  // Create a MockWebServer. These are lean enough that you can create a new
  // instance for every unit test.
  MockWebServer server = new MockWebServer();

  // Schedule some responses.
  server.enqueue(new MockResponse().setBody("hello, world!"));

  }

  /** Confirm that an unacknowledged write times out.  */
  @Test
  fun writeTimeouts() {
    val server = MockWebServer()
    // Sockets on some platforms can have large buffers that mean writes do not block when
    // required. These socket factories explicitly set the buffer sizes on sockets created.
    val socketBufferSize = 4 * 1024
    server.serverSocketFactory =

  private lateinit var server: MockWebServer
  private lateinit var client: OkHttpClient

  @BeforeEach
  fun setUp() {
    // Sockets on some platforms can have large buffers that mean writes do not block when
    // required. These socket factories explicitly set the buffer sizes on sockets created.
    server = MockWebServer()
    server.serverSocketFactory =

   * to the cache because we incorrectly assumed that HttpsURLConnection was always HTTPS and
   * HttpURLConnection was always HTTP; in practice redirects mean that each can do either.
   *
   * https://github.com/square/okhttp/issues/214
   */
  @Test
  fun secureResponseCachingAndProtocolRedirects() {
    server2.useHttps(handshakeCertificates.sslSocketFactory())

   1. Definitions.

      "License" shall mean the terms and conditions for use, reproduction,
      and distribution as defined by Sections 1 through 9 of this document.

      "Licensor" shall mean the copyright owner or entity authorized by
      the copyright owner that is granting the License.

      "Legal Entity" shall mean the union of the acting entity and all

    this.cancelMode = mode.first
    this.connectionType = mode.second

    if (connectionType == H2) {
      platform.assumeHttp2Support()
    }

    // Sockets on some platforms can have large buffers that mean writes do not block when
    // required. These socket factories explicitly set the buffer sizes on sockets created.
    server = MockWebServer()
    server.serverSocketFactory =

// OwnProvider GmbH: http://www.ownprovider.com
// Submitted by Jan Moennich <******@****.***>
ownprovider.com
own.pm

// OwO : https://whats-th.is/
// Submitted by Dean Sheather <dean@deansheather.com>
*.owo.codes

// OX : http://www.ox.rs
// Submitted by Adam Grand <******@****.***>
ox.rs

// oy.lc
// Submitted by Charly Coste <******@****.***>

2F95          ; mapped                 ; 8C37          # 3.0  KANGXI RADICAL VALLEY
2F96          ; mapped                 ; 8C46          # 3.0  KANGXI RADICAL BEAN
2F97          ; mapped                 ; 8C55          # 3.0  KANGXI RADICAL PIG
2F98          ; mapped                 ; 8C78          # 3.0  KANGXI RADICAL BADGER

        statusLine.code == HTTP_CONTINUE -> {
          state = STATE_READ_RESPONSE_HEADERS
          responseBuilder
        }
        statusLine.code in (102 until 200) -> {
          // Processing and Early Hints will mean a second headers are coming.
          // Treat others the same for now
          state = STATE_READ_RESPONSE_HEADERS
          responseBuilder
        }
        else -> {
          state = STATE_OPEN_RESPONSE_BODY

http://www.apache.org/licenses/ TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION 1. Definitions. "License" shall mean the terms and conditions for use, reproduction, and distribution as defined by Sections 1 through 9 of this document. "Licensor" shall mean the copyright owner or entity authorized by the copyright owner that is granting the License. "Legal Entity" shall mean the union of the acting entity and all other entities that control, are controlled by, or are under common control with...