模拟类属性Java/Android [英] Mocking class properties Java/Android

问题描述

我有一个由某人编写的类，该类将其属性公开为公共的，而没有getter/setter.

I have a class written by somebody which exposes it properties as public without getters/setters.

现在，我想使用Android Mocking框架来模拟此类. 我不想修改class_under_test(除非需要).我知道这是一种不好的编程习惯，但是有一种方法可以模拟类似的属性

Now I want to mock this class using Android Mocking framework. I dont want to modify the class_under_test (unless required). I know its a bad programming practice, but is there a way to mock the properties like

AndroidMock.expect(myMockClass.name).andReturn('Scott');

运行测试用例时出现异常:

I get exception when I run the testcase :

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 com.google.android.testing.mocking.AndroidMock.expect(AndroidMock.java:264)
at com.akshat.test.TestPerson.testGetName(TestPerson.java:41)
at java.lang.reflect.Method.invokeNative(Native Method)
at android.test.InstrumentationTestCase.runMethod(InstrumentationTestCase.java:204)
at android.test.InstrumentationTestCase.runTest(InstrumentationTestCase.java:194)
at android.test.AndroidTestRunner.runTest(AndroidTestRunner.java:169)
at android.test.AndroidTestRunner.runTest(AndroidTestRunner.java:154)
at android.test.InstrumentationTestRunner.onStart(InstrumentationTestRunner.java:529)
at android.app.Instrumentation$InstrumentationThread.run(Instrumentation.java:1448)

推荐答案

为该类创建一个模拟对象，并将一个值分配给properties变量.

Create a mock object for the class and assign a value to the properties variable.

Mock mock = Mock.create(ClassName.class);
mock.property = value;

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