ScalaMock模拟通用Java接口重载方法
ScalaMock模拟通用Java接口重载方法
提问于 2018-04-25 12:32:57
我试图模拟具有不同数量参数的重载方法的Java泛型接口。接口代码是：
import java.util.concurrent.Callable;
public interface GOInterface<T> {
void send(T record);
void send(T record, Callable<T> onComplete);
}我尝试用onComplete功能来模拟发送，如下所示：
导入java.util.concurrent.Callable
import org.scalamock.scalatest.MockFactory
import org.scalatest.{FlatSpec, Matchers}
class JavaInterfaceTest extends FlatSpec with Matchers with MockFactory {
behavior of "scalamock"
it should "mock java generic interface with overloaded method (with different number of parameters)" in {
var result = ""
val m = mock[GOInterface[String]]
(m.send(_: String, _: Callable[String])).expects(*, *)
.onCall{ case(s: String, c: Callable[String]) => c.call()}.once
m.send("hello", new Callable[String] {
override def call(): String = {result = "world"; result}
})
result should be("world")
}
it should "mock java generic interface with overloaded method (with different number of parameters) 2" in {
var result = ""
val m = mock[GOInterface[String]]
(m.send(_: String)).expects(*).once
m.send("hello")
result should be("")
}
}我从编译器获得的错误是：
error: value expects is not a member of (String, java.util.concurrent.Callable[String]) => Unit
[ERROR] (m.send(_: String, _: Callable[String])).expects(*, *)
[ERROR] ^
error: value expects is not a member of String => Unit
[ERROR] (m.send(_: String)).expects(*).once
[ERROR] 通过查看ScalaMock git上的不同示例，我可以看到没有使用具有不同param计数的重载方法检查泛型接口的测试。
我的依赖关系是：
<dependency>
<groupId>org.scalamock</groupId>
<artifactId>scalamock-scalatest-support_2.11</artifactId>
<version>3.6.0</version>
<scope>test</scope>
</dependency>
<dependency>
<groupId>org.scalamock</groupId>
<artifactId>scalamock-core_2.11</artifactId>
<version>3.6.0</version>
<scope>test</scope>
</dependency>同时，我在ScalaMock回购中创建了一个ScalaMock。
回答 2
Stack Overflow用户
回答已采纳
发布于 2018-05-07 08:13:19
我设法克服了这个问题。不是以最干净的方式，而是以最有效的方式。正如@PhilippM所建议的那样，我需要修复这个类型，但不幸的是，这还不够，我需要创建一个虚拟类。以下是为我工作的解决方案：
class JavaInterfaceTest extends FlatSpec with Matchers with MockFactory {
behavior of "scalamock"
class StringInterface extends GOInterface[String] {
override def send(record: String): Unit = ()
override def send(record: String, onComplete: Callable[String]): Unit = ()
}
val call: (String, Callable[String]) => Unit = { case(s: String, c: Callable[String]) => c.call()}
it should "mock java generic interface with overloaded method (with different number of parameters)" in {
var result = ""
val m = mock[StringInterface]
(m.send(_: String, _: Callable[String])).expects(*, *)
.onCall{ call }.once
m.send("hello", new Callable[String] {
override def call(): String = {result = "world"; result}
})
result should be("world")
}
it should "mock java generic interface with overloaded method (with different number of parameters) 2" in {
var result = ""
val m = mock[StringInterface]
(m.send(_: String)).expects(*).once
m.send("hello")
result should be("")
}
}当更复杂的界面需要被嘲笑时，我觉得这有点丑陋，而且可能是最糟糕的，但我希望它能帮助其他人。
Stack Overflow用户
发布于 2018-05-06 10:41:50
首先，我建议升级到最新版本的ScalaMock，但泛型和重载方面的问题可能也存在。
为了解决这个问题，在许多情况下，首先锁定类型，然后创建一个模拟，这会有所帮助：
trait StringGoInterface extends GoInterface[String]
val m = mock[StringGoInterface]页面原文内容由Stack Overflow提供。腾讯云小微IT领域专用引擎提供翻译支持
原文链接：
https://stackoverflow.com/questions/50022484
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