Java PowerMock-模拟静态系统类引发IllegalStateException
我有以下代码Java PowerMock-模拟静态系统类引发IllegalStateException,java,junit,easymock,powermock,illegalstateexception,Java,Junit,Easymock,Powermock,Illegalstateexception,我有以下代码 public class A{ public void createFile() { File tempXmlFile = null; String extension = ".xml"; String name = "someName"; try { tempXmlFile = File.createTempFile(name, extension);
public class A{
public void createFile() {
File tempXmlFile = null;
String extension = ".xml";
String name = "someName";
try {
tempXmlFile = File.createTempFile(name, extension);
if (tempXmlFile.exists()) {
tempXmlFile.delete();
}
} catch (IOException e) {
System.out.println(e.getStackTrace());
}
}
}
@RunWith(PowerMockRunner.class)
@PrepareForTest(A.class)
public class testA extends TestCase{
private A classUnderTest;
@Override
@Before
public void setUp() {
classUnderTest = PowerMock.createMock(A.class); //the class is more complex in my case and I have to mock it
}
public void testCreateFile() throws IOException{
String extension = ".xml";
String name = "someName";
PowerMock.mockStatic(File.class);
File tempFileMock = PowerMock.createMock(File.class);
expect(File.createTempFile(name, extension)).andReturn(tempFileMock);
expect(tempFileMock.exists()).andReturn(true);
expect(tempFileMock.delete()).andReturn(true);
replay(File.class, tempFileMock, classUnderTest);
classUnderTest.createFile();
verify(File.class, tempFileMock, classUnderTest);
}
}
在测试类中,正如我所说,必须模拟被测试的类(我不能创建新对象)。
当我运行测试时,我得到:
java.lang.IllegalStateException: no last call on a mock available
at org.easymock.EasyMock.getControlForLastCall(EasyMock.java:174)
at org.easymock.EasyMock.expect(EasyMock.java:156)
at myPackage.testA.testCreateFile(testA.java:35)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at org.junit.internal.runners.TestMethod.invoke(TestMethod.java:59)
at org.junit.internal.runners.MethodRoadie.runTestMethod(MethodRoadie.java:98)
at org.junit.internal.runners.MethodRoadie$2.run(MethodRoadie.java:79)
at org.junit.internal.runners.MethodRoadie.runBeforesThenTestThenAfters(MethodRoadie.java:87)
at org.junit.internal.runners.MethodRoadie.runTest(MethodRoadie.java:77)
at org.junit.internal.runners.MethodRoadie.run(MethodRoadie.java:42)
at org.powermock.modules.junit4.internal.impl.PowerMockJUnit44RunnerDelegateImpl.invokeTestMethod(PowerMockJUnit44RunnerDelegateImpl.java:163)
at org.powermock.modules.junit4.internal.impl.PowerMockJUnit44RunnerDelegateImpl.runMethods(PowerMockJUnit44RunnerDelegateImpl.java:120)
at org.powermock.modules.junit4.internal.impl.PowerMockJUnit44RunnerDelegateImpl$1.run(PowerMockJUnit44RunnerDelegateImpl.java:113)
at org.junit.internal.runners.ClassRoadie.runUnprotected(ClassRoadie.java:27)
at org.junit.internal.runners.ClassRoadie.runProtected(ClassRoadie.java:37)
at org.powermock.modules.junit4.internal.impl.PowerMockJUnit44RunnerDelegateImpl.run(PowerMockJUnit44RunnerDelegateImpl.java:111)
at org.powermock.modules.junit4.common.internal.impl.JUnit4TestSuiteChunkerImpl.run(JUnit4TestSuiteChunkerImpl.java:87)
at org.powermock.modules.junit4.common.internal.impl.AbstractCommonPowerMockRunner.run(AbstractCommonPowerMockRunner.java:44)
at org.eclipse.jdt.internal.junit4.runner.JUnit4TestReference.run(JUnit4TestReference.java:49)
at org.eclipse.jdt.internal.junit.runner.TestExecution.run(TestExecution.java:38)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:467)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:683)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:390)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRunner.java:197)
我读了这里的文档,但是测试仍然不起作用。我错过什么了吗
编辑:我用一个真实的对象测试了前面的代码(并将其从replay中删除)
但是我仍然得到相同的异常。我认为您需要取消构造函数 检查这个
我想你需要抑制构造函数 检查这个
尝试将File.class添加到@PrepareForTest。尝试将File.class添加到@PrepareForTest。尝试org.powermock.reflect.internal.WhiteboxImpl.newInstance()方法创建类的对象,然后直接调用该方法。 1) 这将禁止类的构造函数 2) 如果您的类包含静态块,则使用SuppressStaticInitilationFor来抑制该块 问候
Anil Sharma尝试org.powermock.reflect.internal.WhiteboxImpl.newInstance()方法创建类的对象,然后直接调用该方法。 1) 这将禁止类的构造函数 2) 如果您的类包含静态块,则使用SuppressStaticInitilationFor来抑制该块 问候
Anil Sharma将File.class添加到@PrepareForTest并检查replay和verify的导入。它们应该来自PowerMock。将File.class添加到@PrepareForTest,并检查replay和verify的导入。它们应该来自PowerMock。欢迎使用SO!你能再加一点细节吗,比如代码示例?这将有助于让您的答案得到使用和投票。同意,请毫不犹豫地复制/粘贴原始问题的代码,并直接在您的答案中进行修复(并添加一个快速解释,说明您认为应该按照自己的方式进行操作的原因。)。欢迎使用!你能再加一点细节吗,比如代码示例?这将有助于让您的答案得到使用和投票。同意,请毫不犹豫地复制/粘贴原始问题的代码,并直接在您的答案中进行修复(并添加一个快速解释,说明您认为应该按照自己的方式进行的原因;)。
classUnderTest = new A();