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我正在开发基于 Play 2.0 的 RESTful API 实现，当我尝试运行测试用例（CRUD 操作）时，我看到 POST 请求内容（成功的 201 响应）在随后执行 GET 操作时不可用测试用例。

请看一下我的 JUnit 测试类 -

public class TagTest {

public static FakeApplication app;

private static String AUTH_HEADER = "Authorization";
private static String AUTH_VALUE = "Basic a25paadsfdfasdfdsfasdmeSQxMjM=";
private static int tagId = 0;

private static Map<String, String> postDataMap = new HashMap<String, String>();
private static Map<String, String> updateDataMap = new HashMap<String, String>();
private static String searchText = null;

@BeforeClass
public static void setUpBeforeClass() {
    // Set up new FakeApplication before running any tests
    app = Helpers.fakeApplication();
    Helpers.start(app);
    postDataMap.put("text", "Created");
    updateDataMap.put("text", "Updated");
    searchText = "Date"; // case insensitive substring pattern for "Updated"
}

@Test
public void createTagTest() {
    app = Helpers.fakeApplication();

    running(fakeApplication(), new Runnable() {
        public void run() {
            JsonNode json = Json.toJson(postDataMap);

            FakeRequest request=new FakeRequest().withJsonBody(json);
            Result result = callAction(controllers.routes.ref.Application.createTag(),request.withHeader(TagTest.AUTH_HEADER, TagTest.AUTH_VALUE));

            Map<String, String> headerMap = Helpers.headers(result);
            String location = headerMap.get(Helpers.LOCATION);
            String tagIdStr = location.replace("/tags/","");
            try {
                tagId = Integer.parseInt(tagIdStr);
                assertThat(status(result)).isEqualTo(Helpers.CREATED);
                System.out.println("Tag Id : "+tagId+" Location : "+headerMap.get(Helpers.LOCATION)); // Here I'm getting resource URI from API which means it is successful run

            } catch (NumberFormatException e) {
                System.out.println("Inside NumberFormatException");
                e.printStackTrace();
                assertThat(0).isEqualTo(1);
            }
            System.out.println("createTagTest is successful");
        }
    });
}

@Test
public void getTagTest() {
    app = Helpers.fakeApplication();

    running(fakeApplication(), new Runnable() {
        public void run() {
            FakeRequest request = new FakeRequest();
            Result result = callAction(controllers.routes.ref.Application.getTag(tagId), request.withHeader(TagTest.AUTH_HEADER, TagTest.AUTH_VALUE));
            String content = contentAsString(result);
            if(content.length()==0) {
                assertThat(status(result)).isEqualTo(Helpers.NO_CONTENT);
            } else {
                assertThat(status(result)).isEqualTo(Helpers.OK);
            }
            System.out.println("getTagTest is successful");
        }
    });
}

@Test
public void updateTagTest() {
    app = Helpers.fakeApplication();

    running(fakeApplication(), new Runnable(){
        public void run() {
            JsonNode json = Json.toJson(updateDataMap);
            FakeRequest request = new FakeRequest().withJsonBody(json);
            Result result = callAction(controllers.routes.ref.Application.updateTag(tagId), 
                                        request.withHeader(TagTest.AUTH_HEADER, TagTest.AUTH_VALUE));
            assertThat(status(result)).isEqualTo(Helpers.OK);
            System.out.println("updateTagTest is successful");
        }
    });
}

@Test
public void getAllTagsTest() {
    app = Helpers.fakeApplication();

    running(fakeApplication(), new Runnable() {
        public void run() {
            FakeRequest request = new FakeRequest();
            Result result = callAction(controllers.routes.ref.Application.getAllTags(null), request.withHeader(TagTest.AUTH_HEADER, TagTest.AUTH_VALUE));
            String content = contentAsString(result);
            System.out.println(content);
            if(content.length()==0) {
                System.out.println("No content");
                assertThat(status(result)).isEqualTo(Helpers.NO_CONTENT);
            } else {
                System.out.println("Content");
                assertThat(status(result)).isEqualTo(Helpers.OK);
            }
            System.out.println("getAllTagsTest is successful");
        }
    });
}

@Test
public void getTagsByTextTest() {
    app = Helpers.fakeApplication();

    running(fakeApplication(), new Runnable() {
        public void run() {
            FakeRequest request = new FakeRequest();
            Result result = callAction(controllers.routes.ref.Application.getAllTags(searchText), request.withHeader(TagTest.AUTH_HEADER, TagTest.AUTH_VALUE));
            String content = contentAsString(result);
            if(content.length()==0) {
                assertThat(status(result)).isEqualTo(Helpers.NO_CONTENT);
            } else {
                assertThat(status(result)).isEqualTo(Helpers.OK);
            }
            System.out.println("getAllTagsByTextTest is successful");
        }
    });
}

@Test
public void deleteTagTest() {
    app = Helpers.fakeApplication();

    running(fakeApplication(), new Runnable() {
        public void run() {
            FakeRequest request = new FakeRequest();
            Result result = callAction(controllers.routes.ref.Application.deleteTag(tagId), request.withHeader(TagTest.AUTH_HEADER, TagTest.AUTH_VALUE));
            assertThat(status(result)).isEqualTo(Helpers.OK);
            System.out.println("deleteTagTest is successful");
        }
    });
}

@AfterClass
public static void tearDownAfterClass() {
    // Stop FakeApplication after all tests complete
    Helpers.stop(app);
}
}

当我运行测试时，创建了标签，但在尝试执行 GET /tags/1 并导致 204 No content 时未在后续测试中拾取它。

请阐明这背后的原因。另一个观察结果是，它昨天奏效了，突然间这个问题就出现了。

如果有人可以帮助我解决此问题，将有很大帮助。

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1 回答 1

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JUnit 不支持测试方法的有序序列。这是一个特性——而不是一个错误。测试应该是独立的。因此，您不能保证getTagTest在createTagTest. 有时会；有时它不会。

各个操作应该有自己的测试夹具，并带有用@BeforeClass.

如果您坚持定义的顺序，请dependsOnMethods在TestNG中使用。

于 2013-11-01T20:03:51.447 回答