java.lang.NoClassDefFoundError:android 和 junit 测试 [英] java.lang.NoClassDefFoundError:android and junit test

问题描述

我发现我不是唯一遇到此问题的人，但我没有找到正确的答案.我有一个想要测试的 android 项目.我为我的项目的每个类创建了一个 junit 测试类.我的问题是当我运行测试时，出现以下错误:

I saw that I'm not the only one having this problem but I don't find a correct answer. I have an android project that I want to test. I create a junit test class for each class of my project. My problem is when I run my test, I have the following error :

java.lang.NoClassDefFoundError: android/content/Context

这是我的课堂测试:

public class DevicesBDDTest extends TestCase {

    DevicesBDD bdd;

    /**
     * @throws java.lang.Exception
     */
    protected static void setUpBeforeClass() throws Exception {
    }

    /**
     * @throws java.lang.Exception
     */
    protected static void tearDownAfterClass() throws Exception {
    }

    protected void setUp() throws Exception {
        super.setUp();
        Context ctx = mock(Context.class);
        final MaBaseSQLiteInterface mockMaBaseSQLite = mock(MaBaseSQLiteInterface.class);
        bdd = new DevicesBDD(ctx){
            @Override
            public MaBaseSQLiteInterface createMaBaseSQlite(Context context) {
                return mockMaBaseSQLite;
            }
        };
    }


    protected void tearDown() throws Exception {
        super.tearDown();
    }

    public void test() {
        assertEquals(1, 1);
    }
}

我的类 DevicesBDD 需要一个对象上下文，因此我创建了一个模拟(使用 mockito).我也尝试过使用 MockContext 对象，但它不起作用.

My class DevicesBDD has needs an object Context, therefore I create a mock (with mockito). I tried with a object MockContext too, but it's doesn't work.

这是我的 Java 构建路径:

This is my Java Build Path :

• mockito-all-1.9.5.jar
• 安卓 2.1-> android.jar
• Android 依赖-> annotations.jar
• 六月 3-> junit.jar

推荐答案

不确定我是否和你有同样的问题，但我正在使用 gradle 并且由于某种原因测试不再运行，与相同的错误你有过.我尝试清理和重建，但无济于事.经过数小时的沮丧并试图找到答案后，我在 GitHub 线程中找到了一个简单的解决方案:

Not sure if I had the same problem as you but I am using gradle and for some reason the tests just wouldn't run anymore, with the same error as you had. I tried cleaning and rebuilding but to no avail. After hours of frustration and trying to find an answer I came across the simple solution in a GitHub thread:

我通过删除项目中的 .gradle 文件夹并重建项目解决了这个问题.

I resolved this issue by removing the .gradle folder in my project and rebuilding the project.

(感谢 vpetrov)

(thanks to vpetrov)

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