java.lang.Exception: Test class should have exactly one public zero-argument constructor

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    Eclipse and Java Video Tutorials / Discussion / Open Discussion:Persistence Lesson 2 - initialisation error

    sourceforge.net | 1 year ago
    java.lang.Exception: Test class should have exactly one public zero-argument constructor
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    Persistence Lesson 2 - initialisation error

    eclipsetutorial | 5 years ago | timothycoxon
    java.lang.Exception: Test class should have exactly one public zero-argument constructor
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    Custom runner class AndroidJUnit4 should have a public constructor with signature AndroidJUnit4(Class testClass)

    GitHub | 1 year ago | ShagunParikh
    java.lang.Exception: Custom runner class AndroidJUnit4 should have a public constructor with signature AndroidJUnit4(Class testClass)
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  5. 0

    JUnit's own sample tests fail?

    Stack Overflow | 5 years ago | pacoverflow
    java.lang.Exception: Test class should have exactly one public zero-argument constructor

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    Root Cause Analysis

    1. java.lang.Exception

      Test class should have exactly one public zero-argument constructor

      at org.junit.runners.BlockJUnit4ClassRunner.validateZeroArgConstructor()
    2. JUnit
      Suite.<init>
      1. org.junit.runners.BlockJUnit4ClassRunner.validateZeroArgConstructor(BlockJUnit4ClassRunner.java:155)
      2. org.junit.runners.BlockJUnit4ClassRunner.validateConstructor(BlockJUnit4ClassRunner.java:133)
      3. org.junit.runners.BlockJUnit4ClassRunner.collectInitializationErrors(BlockJUnit4ClassRunner.java:121)
      4. org.junit.runners.ParentRunner.validate(ParentRunner.java:269)
      5. org.junit.runners.ParentRunner.<init>(ParentRunner.java:66)
      6. org.junit.runners.BlockJUnit4ClassRunner.<init>(BlockJUnit4ClassRunner.java:58)
      7. org.junit.internal.builders.JUnit4Builder.runnerForClass(JUnit4Builder.java:13)
      8. org.junit.runners.model.RunnerBuilder.safeRunnerForClass(RunnerBuilder.java:57)
      9. org.junit.internal.builders.AllDefaultPossibilitiesBuilder.runnerForClass(AllDefaultPossibilitiesBuilder.java:29)
      10. org.junit.runners.model.RunnerBuilder.safeRunnerForClass(RunnerBuilder.java:57)
      11. org.junit.runners.model.RunnerBuilder.runners(RunnerBuilder.java:93)
      12. org.junit.runners.model.RunnerBuilder.runners(RunnerBuilder.java:84)
      13. org.junit.runners.Suite.<init>(Suite.java:101)
      14. org.junit.runners.Suite.<init>(Suite.java:67)
      14 frames
    3. Java RT
      Constructor.newInstance
      1. sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
      2. sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:57)
      3. sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
      4. java.lang.reflect.Constructor.newInstance(Constructor.java:532)
      4 frames
    4. JUnit
      ClassRequest.getRunner
      1. org.junit.internal.builders.AnnotatedBuilder.buildRunner(AnnotatedBuilder.java:35)
      2. org.junit.internal.builders.AnnotatedBuilder.runnerForClass(AnnotatedBuilder.java:24)
      3. org.junit.runners.model.RunnerBuilder.safeRunnerForClass(RunnerBuilder.java:57)
      4. org.junit.internal.builders.AllDefaultPossibilitiesBuilder.runnerForClass(AllDefaultPossibilitiesBuilder.java:29)
      5. org.junit.runners.model.RunnerBuilder.safeRunnerForClass(RunnerBuilder.java:57)
      6. org.junit.internal.requests.ClassRequest.getRunner(ClassRequest.java:24)
      6 frames
    5. JUnit4 Runner
      JUnit4TestLoader.loadTests
      1. org.eclipse.jdt.internal.junit4.runner.JUnit4TestReference.<init>(JUnit4TestReference.java:29)
      2. org.eclipse.jdt.internal.junit4.runner.JUnit4TestClassReference.<init>(JUnit4TestClassReference.java:25)
      3. org.eclipse.jdt.internal.junit4.runner.JUnit4TestLoader.createTest(JUnit4TestLoader.java:40)
      4. org.eclipse.jdt.internal.junit4.runner.JUnit4TestLoader.loadTests(JUnit4TestLoader.java:30)
      4 frames
    6. JUnit3 Runner
      RemoteTestRunner.main
      1. org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:452)
      2. org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:683)
      3. org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:390)
      4. org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRunner.java:197)
      4 frames