@Test
  public void testPullManifest_manifestList()
      throws IOException, InterruptedException, GeneralSecurityException, URISyntaxException,
          RegistryException {
    String manifestResponse =
        "HTTP/1.1 200 OK\nContent-Length: 403\n\n{\n"
            + "  \"schemaVersion\": 2,\n"
            + "  \"mediaType\": \"application/vnd.docker.distribution.manifest.list.v2+json\",\n"
            + "  \"manifests\": [\n"
            + "    {\n"
            + "      \"mediaType\": \"application/vnd.docker.distribution.manifest.v2+json\",\n"
            + "      \"size\": 7143,\n"
            + "      \"digest\": \"sha256:e692418e4cbaf90ca69d05a66403747baa33ee08806650b51fab815ad7fc331f\",\n"
            + "      \"platform\": {\n"
            + "        \"architecture\": \"amd64\",\n"
            + "        \"os\": \"linux\"\n"
            + "      }\n"
            + "    }\n"
            + "  ]\n"
            + "}";

    registry = new TestWebServer(false, Arrays.asList(manifestResponse), 1);
    RegistryClient registryClient = createRegistryClient(null);
    ManifestAndDigest<?> manifestAndDigest = registryClient.pullManifest("image-tag");

    Assert.assertEquals(
        "sha256:a340fa38667f765f8cfd79d4bc684ec8a6f48cdd63abfe36e109f4125ee38488",
        manifestAndDigest.getDigest().toString());

    Assert.assertTrue(manifestAndDigest.getManifest() instanceof V22ManifestListTemplate);
    V22ManifestListTemplate manifestList =
        (V22ManifestListTemplate) manifestAndDigest.getManifest();
    Assert.assertEquals(2, manifestList.getSchemaVersion());
    Assert.assertEquals(
        Arrays.asList("sha256:e692418e4cbaf90ca69d05a66403747baa33ee08806650b51fab815ad7fc331f"),
        manifestList.getDigestsForPlatform("amd64", "linux"));

    MatcherAssert.assertThat(
        registry.getInputRead(),
        CoreMatchers.containsString("GET /v2/foo/bar/manifests/image-tag "));
  }
Tests for {@link RegistryClient}. More comprehensive tests can be found in the integration tests.
jib-core/src/test/java/com/google/cloud/tools/jib/registry/RegistryClientTest.java