java - 开启和关闭 togglz 功能的单元测试

Question

我们正在使用 Togglz 在我们的项目中打开和关闭功能。以下 TogglzFeature 枚举正在实现 org.togglz.core.Feature 接口(interface)

public enum TogglzFeature implements Feature {

    @EnabledByDefault
    @Label("Current XSLT code")
    FEATURE_XSLT,

    @Label("NEW JAXB code")
    FEATURE_JAXB;

    public boolean isActive() {
        FeatureManager manager = FeatureContext.getFeatureManager();
        return manager.isActive(this);
    }

}

然后正在测试的方法之一(例如 mut_1(params) )正在检查枚举，例如

if(TogglzFeature.FEATURE_JAXB.isActive()) { dothings();}

请注意，togglz 功能不在 mut_1 的参数中。 mut_1 只是在运行时从上下文中获取它。

那么让 mut_1() 知道我想要 TogglzFeature.FEATURE_JAXB.isActive() 的最佳方法是什么？返回真？

我用 Mockito/PowerMock 试过这个

@RunWith(PowerMockRunner.class)
@PrepareForTest({TogglzFeature.class})
public class myTestClass {

    //private members and set up

    @Test
    public void testTogglz(){
        PowerMockito.mockStatic(TogglzFeature.class);
        BDDMockito.given(TogglzFeature.FEATURE_JAXB.isActive()).willReturn(true);

        //execution and verification
    }
}

系统把这些都吐在我身上

java.lang.VerifyError: Inconsistent stackmap frames at branch target 128
Exception Details:
  Location:
    com/lmig/ci/rate/togglz/TogglzFeature.values()[Lcom/lmig/ci/rate/togglz/TogglzFeature; @128: ldc
  Reason:
    Type 'java/lang/Object' (current frame, locals[1]) is not assignable to '[Lcom/lmig/ci/rate/togglz/TogglzFeature;' (stack map, locals[1])
  Current Frame:
    bci: @120
    flags: { }
    locals: { top, 'java/lang/Object', null, null }
    stack: { 'java/lang/Object', null }
  Stackmap Frame:
    bci: @128
    flags: { }
    locals: { top, '[Lcom/lmig/ci/rate/togglz/TogglzFeature;' }
    stack: { }
  Bytecode:
    0x0000000: 1248 b800 4e12 4f03 bd00 5112 53b8 0057
    0x0000010: 1259 b800 5f4b 2a01 4c01 4d2b 127e b800
    0x0000020: 8012 8112 82b8 0085 b800 894e 2db2 0063
    0x0000030: a600 0ab2 0063 4da7 0008 2dc0 008a 4d2c
    0x0000040: a500 082a c000 64b0 014c 014d 2b12 8bb8
    0x0000050: 0080 128c 128d b800 85b8 0089 4e2d b200
    0x0000060: 63a6 000a b200 014d a700 082d c000 644d
    0x0000070: 2c4c 014d 014e 2b01 a500 082b 4ea7 0009
    0x0000080: 128f b800 804e 2d12 9003 bd00 5112 91b8
    0x0000090: 0093 1295 b800 963a 0419 04b2 0063 a600
    0x00000a0: 0b2b b600 984d a700 0919 04c0 008a 4d2c
    0x00000b0: c000 03b0                              
  Stackmap Table:
    full_frame(@58,{Object[#81],Top,Top,Object[#81]},{Object[#81]})
    full_frame(@63,{Object[#81],Top,Object[#81]},{Object[#81]})
    chop_frame(@72,3)
    full_frame(@107,{Top,Top,Top,Object[#81]},{})
    full_frame(@112,{Top,Top,Object[#81]},{})
    full_frame(@128,{Top,Object[#50]},{})
    append_frame(@134,Top,Object[#81])
    full_frame(@169,{Top,Top,Top,Top,Object[#81]},{})
    full_frame(@175,{Top,Top,Object[#81]},{})

    at java.lang.Class.getDeclaredConstructors0(Native Method)
    at java.lang.Class.privateGetDeclaredConstructors(Class.java:2671)
    at java.lang.Class.getDeclaredConstructors(Class.java:2020)
    at org.powermock.api.mockito.repackaged.ClassImposterizer.setConstructorsAccessible(ClassImposterizer.java:86)
    at org.powermock.api.mockito.repackaged.ClassImposterizer.imposterise(ClassImposterizer.java:72)
    at org.powermock.api.mockito.internal.mockcreation.MockCreator.createMethodInvocationControl(MockCreator.java:122)
    at org.powermock.api.mockito.internal.mockcreation.MockCreator.createMock(MockCreator.java:70)
    at org.powermock.api.mockito.internal.mockcreation.MockCreator.mock(MockCreator.java:47)
    at org.powermock.api.mockito.PowerMockito.mockStatic(PowerMockito.java:71)
    at com.lmig.ci.rate.orchestration.OrchestratorTest.workerCompShouldGoThroughSteppedAudit(OrchestratorTest.java:97)
    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 org.junit.internal.runners.TestMethod.invoke(TestMethod.java:68)
    at org.powermock.modules.junit4.internal.impl.PowerMockJUnit44RunnerDelegateImpl$PowerMockJUnit44MethodRunner.runTestMethod(PowerMockJUnit44RunnerDelegateImpl.java:316)
    at org.junit.internal.runners.MethodRoadie$2.run(MethodRoadie.java:89)
    at org.junit.internal.runners.MethodRoadie.runBeforesThenTestThenAfters(MethodRoadie.java:97)
    at org.powermock.modules.junit4.internal.impl.PowerMockJUnit44RunnerDelegateImpl$PowerMockJUnit44MethodRunner.executeTest(PowerMockJUnit44RunnerDelegateImpl.java:300)
    at org.powermock.modules.junit4.internal.impl.PowerMockJUnit47RunnerDelegateImpl$PowerMockJUnit47MethodRunner.executeTestInSuper(PowerMockJUnit47RunnerDelegateImpl.java:131)
    at org.powermock.modules.junit4.internal.impl.PowerMockJUnit47RunnerDelegateImpl$PowerMockJUnit47MethodRunner.access$100(PowerMockJUnit47RunnerDelegateImpl.java:59)
    at org.powermock.modules.junit4.internal.impl.PowerMockJUnit47RunnerDelegateImpl$PowerMockJUnit47MethodRunner$TestExecutorStatement.evaluate(PowerMockJUnit47RunnerDelegateImpl.java:147)
    at org.powermock.modules.junit4.internal.impl.PowerMockJUnit47RunnerDelegateImpl$PowerMockJUnit47MethodRunner.evaluateStatement(PowerMockJUnit47RunnerDelegateImpl.java:107)
    at org.powermock.modules.junit4.internal.impl.PowerMockJUnit47RunnerDelegateImpl$PowerMockJUnit47MethodRunner.executeTest(PowerMockJUnit47RunnerDelegateImpl.java:82)
    at org.powermock.modules.junit4.internal.impl.PowerMockJUnit44RunnerDelegateImpl$PowerMockJUnit44MethodRunner.runBeforesThenTestThenAfters(PowerMockJUnit44RunnerDelegateImpl.java:288)
    at org.junit.internal.runners.MethodRoadie.runTest(MethodRoadie.java:87)
    at org.junit.internal.runners.MethodRoadie.run(MethodRoadie.java:50)
    at org.powermock.modules.junit4.internal.impl.PowerMockJUnit44RunnerDelegateImpl.invokeTestMethod(PowerMockJUnit44RunnerDelegateImpl.java:208)
    at org.powermock.modules.junit4.internal.impl.PowerMockJUnit44RunnerDelegateImpl.runMethods(PowerMockJUnit44RunnerDelegateImpl.java:147)
    at org.powermock.modules.junit4.internal.impl.PowerMockJUnit44RunnerDelegateImpl$1.run(PowerMockJUnit44RunnerDelegateImpl.java:121)
    at org.junit.internal.runners.ClassRoadie.runUnprotected(ClassRoadie.java:34)
    at org.junit.internal.runners.ClassRoadie.runProtected(ClassRoadie.java:44)
    at org.powermock.modules.junit4.internal.impl.PowerMockJUnit44RunnerDelegateImpl.run(PowerMockJUnit44RunnerDelegateImpl.java:123)
    at org.powermock.modules.junit4.common.internal.impl.JUnit4TestSuiteChunkerImpl.run(JUnit4TestSuiteChunkerImpl.java:121)
    at org.powermock.modules.junit4.common.internal.impl.AbstractCommonPowerMockRunner.run(AbstractCommonPowerMockRunner.java:53)
    at org.powermock.modules.junit4.PowerMockRunner.run(PowerMockRunner.java:59)
    at org.eclipse.jdt.internal.junit4.runner.JUnit4TestReference.run(JUnit4TestReference.java:86)
    at org.eclipse.jdt.internal.junit.runner.TestExecution.run(TestExecution.java:38)
    at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:459)
    at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:675)
    at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:382)
    at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRunner.java:192)

Answer 1

你不需要 mock 任何东西。 Togglz 附带了一个用于单元测试功能切换的特殊模块。看看这里:

http://www.togglz.org/documentation/testing.html

例如，有一个 JUnit 规则，它提供了一种切换功能的简单方法:

public class SomeJunitTest {

  @Rule
  public TogglzRule togglzRule = TogglzRule.allEnabled(MyFeatures.class);

  @Test
  public void testToggleFeature() {

    // all features are active by default  
    assertTrue(MyFeatures.FEATURE_ONE.isActive());

    // you can easily modify the feature state using the TogglzRule
    togglzRule.disable(MyFeatures.FEATURE_ONE);
    assertFalse(MyFeatures.FEATURE_ONE.isActive());

  }

}