我可以在 groovy 中使用映射强制来模拟具有带参数的构造函数的类吗？

Question

测试中的 Java 示例类

public class Sample {
    public void printPie() {
        System.out.println("Pie.");
    }
}

public class SampleCont {
    String _PIE;

    public SampleCont() {
        _PIE = "pie";
    }
    public void printPie() {
        System.out.println(_PIE);
    }
}


public class SampleContArg {
    String _PIE;

    public SampleContArg(String pie) {
        _PIE = pie;
    }
    public void printPie() {
        System.out.println(_PIE);
    }
}

groovy 测试类

public class TestPie extends GroovyTestCase{

    void test_Sample()
    {
        def mock = [printPie: {print "NotPie"}] as Sample
        mock.printPie()
    }

    void test_SampleCont()
    {
        def mock = [printPie: {print "NotPie"}] as SampleCont
        mock.printPie()
    }

    void test_SampleContArg()
    {
        def mock = [printPie: {print "NotPie"}] as SampleContArg
        mock.printPie()
    }
}

前两个测试编译并运行良好。 后一个测试由于异常而未运行：

java.lang.ArrayIndexOutOfBoundsException: 0
    at SampleContArg_groovyProxy.<init>(Script1.groovy:4)
    at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
    at sun.reflect.NativeConstructorAccessorImpl.newInstance(Unknown Source)
    at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(Unknown Source)
    at java.lang.reflect.Constructor.newInstance(Unknown Source)
    at org.codehaus.groovy.runtime.MetaClassHelper.doConstructorInvoke(MetaClassHelper.java:595)
    at groovy.lang.MetaClassImpl.doConstructorInvoke(MetaClassImpl.java:2359)
    at groovy.lang.MetaClassImpl.invokeConstructor(MetaClassImpl.java:1255)
    at groovy.lang.MetaClassImpl.invokeConstructor(MetaClassImpl.java:1185)
    at org.codehaus.groovy.runtime.InvokerHelper.invokeConstructorOf(InvokerHelper.java:809)
    at org.codehaus.groovy.runtime.ScriptBytecodeAdapter.invokeNewN(ScriptBytecodeAdapter.java:230)
    at Script1.run(Script1.groovy:9)
    at groovy.lang.GroovyShell.evaluate(GroovyShell.java:543)
    at groovy.lang.GroovyShell.evaluate(GroovyShell.java:518)
    at groovy.util.ProxyGenerator.instantiateAggregate(ProxyGenerator.java:201)
    at groovy.util.ProxyGenerator.instantiateAggregateFromBaseClass(ProxyGenerator.java:70)
    at groovy.util.ProxyGenerator.instantiateAggregateFromBaseClass(ProxyGenerator.java:66)
    at org.codehaus.groovy.runtime.DefaultGroovyMethods.asType(DefaultGroovyMethods.java:3811)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
    at java.lang.reflect.Method.invoke(Unknown Source)
    at org.codehaus.groovy.runtime.metaclass.ReflectionMetaMethod.invoke(ReflectionMetaMethod.java:51)
    at org.codehaus.groovy.runtime.metaclass.NewInstanceMetaMethod.invoke(NewInstanceMetaMethod.java:54)
    at groovy.lang.MetaMethod.doMethodInvoke(MetaMethod.java:230)
    at groovy.lang.MetaClassImpl.invokeMethod(MetaClassImpl.java:912)
    at groovy.lang.MetaClassImpl.invokeMethod(MetaClassImpl.java:756)
    at org.codehaus.groovy.runtime.InvokerHelper.invokePojoMethod(InvokerHelper.java:766)
    at org.codehaus.groovy.runtime.InvokerHelper.invokeMethod(InvokerHelper.java:754)
    at org.codehaus.groovy.runtime.ScriptBytecodeAdapter.invokeMethodN(ScriptBytecodeAdapter.java:170)
    at org.codehaus.groovy.runtime.ScriptBytecodeAdapter.asType(ScriptBytecodeAdapter.java:622)
    at com.hp.vse.cp.cli.agentless.ssh.TestPie.test_SampleContArg(TestPie.groovy:24)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
    at java.lang.reflect.Method.invoke(Unknown Source)
    at junit.framework.TestCase.runTest(TestCase.java:154)
    at junit.framework.TestCase.runBare(TestCase.java:127)
    at junit.framework.TestResult$1.protect(TestResult.java:106)
    at junit.framework.TestResult.runProtected(TestResult.java:124)
    at junit.framework.TestResult.run(TestResult.java:109)
    at junit.framework.TestCase.run(TestCase.java:118)
    at junit.framework.TestSuite.runTest(TestSuite.java:208)
    at junit.framework.TestSuite.run(TestSuite.java:203)
    at org.eclipse.jdt.internal.junit.runner.junit3.JUnit3TestReference.run(JUnit3TestReference.java:130)
    at org.eclipse.jdt.internal.junit.runner.TestExecution.run(TestExecution.java:38)
    at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:460)
    at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:673)
    at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:386)
    at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRunner.java:196)

对于上面的第三个类，我仍然可以使用 groovy 映射强制来模拟该类吗？ 如果是这样，我做错了什么？

Answer 1

有 ProxyGenerator.instantiateAggregateFromBaseClass 方法能够接受构造函数参数。 但不幸的是，as 运算符不会为您调用它。

所以，目前的答案是否定的。

仅供参考，“as”将调用 DefaultGroovyMethods.asType() 方法之一，但它们都不会调用您想要的 instantiateAggregateFromBaseClass 。