Java 带Guice的黄瓜-多Guice注射器
我正在使用Java 带Guice的黄瓜-多Guice注射器,java,cucumber,guice,cucumber-junit,Java,Cucumber,Guice,Cucumber Junit,我正在使用Cucumber和Guice作为DI。 我遇到了以下问题: 我有一个步骤,即 class MyStep() { @Inject private MyService myService; @Given("Some acction happen") public void sthHappen() { myService.doSth(); } } 我让这个类作为JUnittest运行它 @RunWith(Cucumber.clas
Cucumber
和Guice
作为DI。
我遇到了以下问题:
我有一个步骤,即
class MyStep() {
@Inject
private MyService myService;
@Given("Some acction happen")
public void sthHappen() {
myService.doSth();
}
}
我让这个类作为JUnit
test运行它
@RunWith(Cucumber.class)
@CucumberOptions(...)
public class MyTest {
}
有一个
class MyModule extends AbstractModule {
@Override
protected void configure() {
bind(MyService.class).to(MyFirstService.class);
}
}
myMyInjectorSource使用的
我定义cucumber.properties,其中我定义guice.injector source=MyInjectorSource代码>
还有一个包含场景的功能文件。
现在一切正常
不,我想用其他MyService实现运行MyStep步骤(当然我不想重复MyStep的代码)
我用新的场景和新的测试类定义了一个新的特性文件
@RunWith(Cucumber.class)
@CucumberOptions(...)
public class MyOtherTest {
}
现在我尝试创建另一个InjectorSource
,但无法对其进行配置。我找到的解决方案是使用自定义Junit4 runner继承原始Cucumber runner并更改其createRuntime
方法
最新的cucumber guice 1.2.5使用了几个阶段来创建注入器,不幸的是,它使用了全局变量cucumber.runtime.Env.INSTANCE
。此变量由cucumber.properties
和System.getProperties
填充
流量为:
- Cucumber runner扫描可用的后端(在我的设置中是
Cucumber.runtime.java.JavaBackend
)
- 一个JavaBackend构造函数加载可用的
ObjectFactory
(在我的设置中是cucumber.runtime.java.guice.impl.GuiceFactory)
- GuiceFactory通过InjectorSourceFactory检查
Env.INSTANCE
,它将创建自定义InjectorSource
或默认注入器
理想情况下,cucumber应该将其在开始时创建的“RuntimeOptions”传递给后端和InjectorSource,但不幸的是,它没有这样做,并且使用全局变量。创建像这样的补丁并不容易,所以我的解决方案简化了这种方法,并通过阅读新注释直接在CustomRunner中创建InjectorSource
public class GuiceCucumberRunner extends Cucumber {
public GuiceCucumberRunner(Class<?> clazz) throws InitializationError, IOException {
super(clazz);
}
@Override
protected Runtime createRuntime(ResourceLoader resourceLoader, ClassLoader classLoader, RuntimeOptions runtimeOptions) throws InitializationError, IOException {
Runtime result = new Runtime(resourceLoader, classLoader, Arrays.asList(createGuiceBackend()), runtimeOptions);
return result;
}
private JavaBackend createGuiceBackend() {
GuiceCucumberOptions guiceCucumberOptions = getGuiceCucumberOptions();
InjectorSource injectorSource = createInjectorSource(guiceCucumberOptions.injectorSource());
ObjectFactory objectFactory = new GuiceFactory(injectorSource.getInjector());
JavaBackend result = new JavaBackend(objectFactory);
return result;
}
private GuiceCucumberOptions getGuiceCucumberOptions() {
GuiceCucumberOptions guiceCucumberOptions = getTestClass().getJavaClass().getAnnotation(GuiceCucumberOptions.class);
if (guiceCucumberOptions == null) {
String message = format("Suite class ''{0}'' is missing annotation GuiceCucumberOptions", getTestClass().getJavaClass());
throw new CucumberException(message);
}
return guiceCucumberOptions;
}
private InjectorSource createInjectorSource(Class<? extends InjectorSource> clazz) {
try {
return clazz.newInstance();
} catch (Exception e) {
String message = format("Instantiation of ''{0}'' failed. InjectorSource must have has a public zero args constructor.", clazz);
throw new InjectorSourceInstantiationFailed(message, e);
}
}
static class GuiceFactory implements ObjectFactory {
private final Injector injector;
GuiceFactory(Injector injector) {
this.injector = injector;
}
@Override
public boolean addClass(Class<?> clazz) {
return true;
}
@Override
public void start() {
injector.getInstance(ScenarioScope.class).enterScope();
}
@Override
public void stop() {
injector.getInstance(ScenarioScope.class).exitScope();
}
@Override
public <T> T getInstance(Class<T> clazz) {
return injector.getInstance(clazz);
}
}
}
@Retention(RetentionPolicy.RUNTIME)
@Target({ ElementType.TYPE })
public @interface GuiceCucumberOptions {
Class<? extends InjectorSource> injectorSource();
}
@RunWith(GuiceCucumberRunner.class)
@GuiceCucumberOptions(injectorSource = MyInjector.class)
@CucumberOptions(
...
)
public class Suite {
}
公共类guiceCumberRunner扩展{
公共GuiceCumberRunner(类clazz)引发初始化错误,IOException{
超级(clazz);
}
@凌驾
受保护的运行时createRuntime(ResourceLoader ResourceLoader,ClassLoader ClassLoader,RuntimeOptions RuntimeOptions)引发初始化错误,IOException{
运行时结果=新运行时(resourceLoader、classLoader、Arrays.asList(createGuiceBackend())、运行时选项);
返回结果;
}
私有JavaBackend createGuiceBackend(){
GuiceCumberOptions GuiceCumberOptions=GetGuiceCumberOptions();
InjectorSource InjectorSource=createInjectorSource(guiceCumberOptions.InjectorSource());
ObjectFactory ObjectFactory=new-GuiceFactory(injectorSource.getInjector());
JavaBackend结果=新的JavaBackend(objectFactory);
返回结果;
}
私有GuiceCumberOptions GetGuiceCumberOptions(){
GuiceCumberOptions GuiceCumberOptions=getTestClass().getJavaClass().getAnnotation(GuiceCumberOptions.class);
if(guiceCumberOptions==null){
字符串消息=格式(“套件类“{0}”缺少注释GuiceCumberOptions”,getTestClass().getJavaClass());
抛出新黄瓜异常(消息);
}
返回guicecumberOptions;
}
私有InjectorSource createInjectorSource(类)如果将“@Inject”注释放置在“@Before”钩子中会怎么样?可以根据标记创建不同的“@Before”钩子,例如“@Before”(“@tag1”)和“@Before”(“@tag2”)。每个钩子都有不同的“@Inject”定义。如何在注释中转义“@”?