How to test an injected class through Spec2?
我正在尝试测试课程
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| @Singleton
class Foo @Inject ()(bar : Bar )(implicit ec : ExecutionContext ) {
def doSomething = bar. doSomethingInBar
}
class Bar {
def doSomethingInBar = true
} |
通过下面提到的Specification类
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| class FooTest @Inject ()(foo : Foo ) extends Specification {
"foo" should {
"bar" in {
foo. doSomething mustEqual (true)
}
}
} |
现在，当我运行此命令时，出现以下错误
我遵循了此处提到的解决方案
并定义一个Injector
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| object Inject {
lazy val injector = Guice. createInjector()
def apply [T <: AnyRef ](implicit m : ClassTag [T ]): T =
injector. getInstance(m. runtimeClass). asInstanceOf[T ]
} |
和我的Specification类中的lazy val foo: Foo = Inject[Foo]。它解决了我的构造函数初始化问题，但是现在出现此错误。
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| [error ] ! check the calculate assets function
[error ] Guice configuration errors :
[error ]
[error ] 1) No implementation for scala. concurrent. ExecutionContext was bound.
[error ] while locating scala. concurrent. ExecutionContext |
您需要提供一个隐式ExecutionEnv来使代码正常工作
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| @RunWith (classOf [JUnitRunner ])
class FooTest (implicit ee : ExecutionEnv ) extends Specification {
"foo" should {
"bar" in {
foo. doSomething mustEqual (true)
}
}
} |
现在在代码中的某处，您需要初始化foo构造，然后可以将其传递给构造函数-这就是进行依赖注入的要点。