{* ../../docs_src/dataclasses_/tutorial002_py310.py hl[1,6:12,18] *}

该数据类会被自动转换为 Pydantic 的数据类。

这样，它的模式会显示在 API 文档界面中：

<img src="/img/tutorial/dataclasses/image01.png">

## 在嵌套数据结构中使用数据类 { #dataclasses-in-nested-data-structures }

你也可以把 `dataclasses` 与其它类型注解组合在一起，创建嵌套数据结构。

在某些情况下，你可能仍然需要使用 Pydantic 的 `dataclasses` 版本。例如，如果自动生成的 API 文档出现错误。

在这种情况下，你可以直接把标准的 `dataclasses` 替换为 `pydantic.dataclasses`，它是一个可直接替换的实现：

        GsaConfigException exception = new GsaConfigException("Serialization test");

        // Verify the exception is serializable (has serialVersionUID)
        assertNotNull(exception);
        // The serialVersionUID field exists and is accessible at compile time
        assertTrue(exception instanceof java.io.Serializable);
    }

    @Test
    public void test_stackTrace() {

  }

  @J2ktIncompatible
  @GwtIncompatible // NullPointerTester
  public void testNullPointers() {
    NullPointerTester tester = new NullPointerTester();
    tester.testAllPublicStaticMethods(ImmutableMultiset.class);
  }

  @J2ktIncompatible
  @GwtIncompatible // SerializableTester
  public void testSerialization_empty() {

		t.Run(ei.Name, func(t *testing.T) {
			ai := actual[i]
			tests.AssertObjEqual(t, ai, ei, "Name", "Class", "Type", "Where", "Comment", "Option")

			if len(ei.Fields) != len(ai.Fields) {
				t.Errorf("expected index %q field length is %d but actual %d", ei.Name, len(ei.Fields), len(ai.Fields))
				return
			}
			for i, ef := range ei.Fields {
				af := ai.Fields[i]

        assertEquals("Image Height", height, img.getHeight());
    }

    // Tests for atomic file operations (TOCTOU fix)

    @Test
    public void test_createDirectories_nestedPath() throws Exception {
        // Test that Files.createDirectories works correctly for nested paths
        Path tempDir = Files.createTempDirectory("toctou_test");
        try {

      - name: Generate test class runtime JSON
        run: |
          cd /tmp/gradle-ci-health
          ./gradlew :run --args "/tmp/test-class-data.json ${GITHUB_WORKSPACE}"
      - name: Update test bucket split
        run: |
          cd ${GITHUB_WORKSPACE}/.teamcity
          ./mvnw compile exec:java@update-test-buckets -DinputTestClassDataJson=/tmp/test-class-data.json

Yuri Schimke <******@****.***> 1703342811 +0000

org.apache.lucene.util.LuceneTestCase$Slow @ Don't write slow tests
org.junit.Ignore @ Use AwaitsFix instead
org.apache.lucene.util.LuceneTestCase$Nightly @ We don't run nightly tests at this point!
com.carrotsearch.randomizedtesting.annotations.Nightly @ We don't run nightly tests at this point!

org.junit.Test @defaultMessage Just name your test method testFooBar

    name: elastic+elasticsearch+%BRANCH%+periodic+packaging-tests
    display-name: "elastic / elasticsearch # %BRANCH% - packaging tests"
    description: "Testing of the Elasticsearch %BRANCH% branch packaging tests.\n"
    project-type: multijob
    node: master
    vault: []
    scm:
      - git:
          wipe-workspace: false
    builders:
      - multijob:
          name: Packaging tests
          projects:

---
- job:
    name: elastic+elasticsearch+%BRANCH%+periodic+release-tests
    workspace: /dev/shm/elastic+elasticsearch+%BRANCH%+periodic+release-tests
    display-name: "elastic / elasticsearch # %BRANCH% - release tests"
    description: "Release version tests for the Elasticsearch %BRANCH% branch.\n"
    node: "general-purpose && docker"
    builders:
      - inject:
          properties-file: '.ci/java-versions.properties'
          properties-content: |