带有Spring Boot Integration的Cucumber Java – Spring @Autowired会抛出NullPointer异常

我正在为测试每个功能的Spring启动应用程序编写cucumber-java单元测试.当我与spring boot集成时,@ Autowired类会抛出NullPointer异常.

春季启动应用程序类,

@SpringBootApplication
public class SpringBootCucumberTest {

    public static void main(String[] args) {
        SpringApplication.run(SpringBootCucumberTest.class, args);
    }
}

要测试的课程,

@Component
public class Library {

    private final List<BookVo> store = new ArrayList<BookVo>();

    public void addBook(final BookVo BookVo) {
        this.store.add(BookVo);
    }
}

黄瓜单位类,

@RunWith(Cucumber.class)
@CucumberOptions(format = "pretty", features = "src/test/resources")
public class BookSearchTest {

}

黄瓜定义类,

public class BookSearchSteps extends AbstractDefinition{

    @Autowired
    private Library library;

    private List<BookVo> result = new ArrayList<BookVo>();

    @Given(".+book with the title '(.+)', written by '(.+)', published in (.+)")
    public void addNewBook(final String title, final String author, @Format("dd MMMMM yyyy") final Date published) {
        BookVo book = new BookVo(title, author, published);
        library.addBook(book);
    }
 }

春天融入黄瓜类,

@RunWith(SpringJUnit4ClassRunner.class)
@ContextConfiguration(classes = SpringBootCucumberTest.class, loader = SpringApplicationContextLoader.class)
@WebAppConfiguration
@IntegrationTest
public class AbstractDefinition {

    public AbstractDefinition() {
    }
}

如果定义类这样,它的工作原理,

public class BookSearchSteps extends AbstractDefinition{

    private Library library = new Library();

    private List<BookVo> result = new ArrayList<BookVo>();

    @Given(".+book with the title '(.+)', written by '(.+)', published in (.+)")
    public void addNewBook(final String title, final String author, @Format("dd MMMMM yyyy") final Date published) {
        BookVo book = new BookVo(title, author, published);
        library.addBook(book);
    }
}

如果定义类以这种方式抛出NullPointer异常,它不起作用,

public class BookSearchSteps extends AbstractDefinition{

    @Autowired
    private Library library;

    private List<BookVo> result = new ArrayList<BookVo>();

    @Given(".+book with the title '(.+)', written by '(.+)', published in (.+)")
    public void addNewBook(final String title, final String author, @Format("dd MMMMM yyyy") final Date published) {
        BookVo book = new BookVo(title, author, published);
        library.addBook(book);
    }
}

@Autowired在这个地方不起作用我在运行测试时也看不到Spring启动应用程序日志.是集成springboot应用程序类进行黄瓜单元测试的正确方法.请建议我修复此问题.

解决方法:

以下解决了这个问题,需要在maven依赖项中包含cucumber-spring.

<dependency>
            <groupId>info.cukes</groupId>
            <artifactId>cucumber-spring</artifactId>
            <version>1.2.4</version>
            <scope>test</scope>
        </dependency>

黄瓜春天的pom.xml,

<dependency>
            <groupId>info.cukes</groupId>
            <artifactId>cucumber-junit</artifactId>
            <version>1.2.4</version>
            <scope>test</scope>
        </dependency>
        <dependency>
            <groupId>info.cukes</groupId>
            <artifactId>cucumber-spring</artifactId>
            <version>1.2.4</version>
            <scope>test</scope>
        </dependency>

修改后的黄瓜定义文件,

@ContextConfiguration(classes = SpringBootCucumberTest.class, loader = SpringApplicationContextLoader.class)
public class BookSearchSteps {

    @Autowired
    private Library library;

    private List<BookVo> result = new ArrayList<BookVo>();

    @Given(".+book with the title '(.+)', written by '(.+)', published in (.+)")
    public void addNewBook(final String title, final String author, @Format("dd MMMMM yyyy") final Date published) {
        BookVo book = new BookVo(title, author, published);
        library.addBook(book);
    }
}

这解决了@Autowired和springboot集成问题.我们将能够使用黄瓜指定的更改来测试弹簧启动应用程序.

标签：java,unit-testing,spring,cucumber-java,cucumber-junit
来源： https://codeday.me/bug/20190611/1219489.html