Wie man statische Methoden in Kotlin vortäuscht?

Question

Ich versuche, eine statische Methode mit JMockit in Kotlin zu verspotten:

object: MockUp<System>() { 
    @Mock 
    fun getProperty(name: String) = "tagB" 
} 

Aber ich erhalte den folgenden Fehler:

Could not load Logmanager "tagB" java.lang.ClassNotFoundException: tagB at java.net.URLClassLoader.findClass(URLClassLoader.java:381) at java.lang.ClassLoader.loadClass(ClassLoader.java:424) at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:331) at java.lang.ClassLoader.loadClass(ClassLoader.java:357) at java.util.logging.LogManager$1.run(LogManager.java:195) at java.util.logging.LogManager$1.run(LogManager.java:181) at java.security.AccessController.doPrivileged(Native Method) at java.util.logging.LogManager.(LogManager.java:181) at java.util.logging.Logger.getPlatformLogger(Logger.java:572) at java.util.logging.LoggingProxyImpl.getLogger(LoggingProxyImpl.java:41) at sun.util.logging.LoggingSupport.getLogger(LoggingSupport.java:100) at sun.util.logging.PlatformLogger$JavaLoggerProxy.(PlatformLogger.java:602) at sun.util.logging.PlatformLogger$JavaLoggerProxy.(PlatformLogger.java:597) at sun.util.logging.PlatformLogger.(PlatformLogger.java:239) at sun.util.logging.PlatformLogger.getLogger(PlatformLogger.java:198) at sun.util.locale.provider.LocaleServiceProviderPool.config(LocaleServiceProviderPool.java:142) at sun.util.locale.provider.LocaleProviderAdapter.(LocaleProviderAdapter.java:165) at java.text.DecimalFormatSymbols.getInstance(DecimalFormatSymbols.java:178) at java.util.Formatter.getZero(Formatter.java:2283) at java.util.Formatter.(Formatter.java:1892) at java.util.Formatter.(Formatter.java:1914) at java.lang.String.format(String.java:2940) at org.junit.runner.Description.formatDisplayName(Description.java:114) at org.junit.runner.Description.createTestDescription(Description.java:73) at io.kotlintest.TestCase.getDescription(testcase.kt:45) at io.kotlintest.TestBase.descriptionForSuite$kotlintest_main(TestBase.kt:153) at io.kotlintest.TestBase.getDescription$kotlintest_main(TestBase.kt:39) at io.kotlintest.KTestJUnitRunner.getDescription(KTestJUnitRunner.kt:11) at com.intellij.junit4.JUnit4IdeaTestRunner.getDescription(JUnit4IdeaTestRunner.java:123) at com.intellij.junit4.JUnit4IdeaTestRunner.startRunnerWithArgs(JUnit4IdeaTestRunner.java:99) at com.intellij.junit4.JUnit4IdeaTestRunner.startRunnerWithArgs(JUnit4IdeaTestRunner.java:42) at com.intellij.rt.execution.junit.JUnitStarter.prepareStreamsAndStart(JUnitStarter.java:234) at com.intellij.rt.execution.junit.JUnitStarter.main(JUnitStarter.java:74) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at com.intellij.rt.execution.application.AppMain.main(AppMain.java:144) Logging configuration class "tagB" failed java.lang.ClassNotFoundException: tagB ...

Andere Ansätze mit den Erwartungen Blöcke waren nicht allzu erfolgreich.

Wie kann ich eine statische Methode in Kotlin verspotten?

Answer 1

sollten Sie verspotten-System wie folgt aus:

class MockSystem : MockUp<System>() { 
    @Mock 
    fun getProperty(name: String) = "tagB" 
} 


class MockTest { 

    val m = MockSystem(); 

    @Test fun test() { 
     Assert.assertEquals(System.getProperty("hello"), "tagB") 
    } 
}