Question

我尝试使用resource class对Java Dropwizard中的Spock testing framework进行单元测试。

将Todo发布到/应将Todo添加到数据库并返回添加的Todo。当我运行代码时，代码按预期工作，我只是无法弄清楚如何测试它。

我想验证三件事：

我从POST

Todo

我获得了OK（200）状态。
TodoStore.save被调用一次。

以下测试仅适用于第3项。如何修复第1项和第2项？

完整的工作代码可在相关提交的Github处获得。

TodoResourceTest.groovy

class TodoResourceTest extends Specification {

    TodoStore todoStore = Mock(TodoStore)

    @Rule
    ResourceTestRule resources = ResourceTestRule.builder()
            .addResource(new TodoResource(todoStore))
            .build()

    def "Adding a todo increases number of Todos"() {
        given: "no todos in TodoStore"
            Todo todo = new Todo(1, "title", null, null, null)
            todoStore.save(_ as Todo) >> todo

        when: "we add a Todo"
            def response = resources.client().target("/")
                .request(APPLICATION_JSON_TYPE)
                .post(entity(todo, APPLICATION_JSON_TYPE))
        then:
            // HELP: How do you test that the returned Todo is the same?

            // FAILS: Why doesn't this pass, it's returning 204 - no content
            response.getStatusInfo() == Response.Status.OK

            // PASSES
            1 * todoStore.save(_ as Todo)
    }
}

TodoResource.java

@Path("/")
@Produces(MediaType.APPLICATION_JSON)
public final class TodoResource {

    private final TodoStore todoStore;

    @Inject
    public TodoResource(TodoStore todoStore) {
        this.todoStore = todoStore;
    }

    @Timed
    @POST
    public Todo addTodo(Todo todo) {
        return todoStore.save(todo);
    }
}

TodoStore.java - 这是嘲笑的，所以它不应该重要

public class TodoStore {

    private final DSLContext db;

    @Inject
    public TodoStore(DSLContext db) {
        this.db = db;
    }

    public Todo save(Todo todo) {
        final TodoRecord todoRecord = db.newRecord(TODO, todo);

        // id is determined by database, not user
        todoRecord.changed(TODO.ID, false);

        // url is determined based on id
        todoRecord.setUrl(null);

        if (todoRecord.getCompleted() == null) {
            todoRecord.setCompleted(false);
        }

        todoRecord.store();

        return todoRecord.into(Todo.class);
    }
}

Answer 1

我应该仔细检查文档。

来自Combining Mocking and Stubbing上的Spock文档。

当模拟和存根相同的方法调用时，它们必须在相同的交互中发生。特别是，以下Mockito风格将存根和模拟拆分为两个单独的语句将不工作：

我的具体示例的解决方案是在todoStore.save块中存根then，如下所示：

def "Adding a todo increases number of Todos"() {
    given: "no todos in TodoStore"
    Todo todo = new Todo(1, "title", null, null, null)

    when: "we add a Todo"
    def response = resources.client().target("/")
            .request(APPLICATION_JSON_TYPE)
            .post(entity(todo, APPLICATION_JSON_TYPE))


    then:
    // How do you test that the returned Todo is the same?

    response.getStatusInfo() == Response.Status.OK

    1 * todoStore.save(_ as Todo) >> todo
}

仍然不确定如何验证问题＃1，响应返回相同的Todo对象。

使用Spock测试库测试POST到Dropwizard资源

TodoResourceTest.groovy

TodoResource.java

TodoStore.java - 这是嘲笑的，所以它不应该重要

1 个答案: