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

问题描述

我看到我不是唯一一个遇到此问题的人，但我没有找到正确的答案. 我有一个要测试的android项目.我为项目的每个类创建一个junit测试类. 我的问题是运行测试时，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

这是我的课堂考试:

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Context，因此我创建了一个模拟对象(带有模拟对象).我也尝试了一个对象MockContext，但这是行不通的.

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
• Android 2.1 -> android.jar
• Android依赖项 -> Annotations.jar
• Junit 3 -> junit.jar

• mockito-all-1.9.5.jar
• Android 2.1 -> android.jar
• Android Dependencies -> annotations.jar
• Junit 3 -> junit.jar

推荐答案

不确定我是否和您有同样的问题，但我使用的是gradle，由于某种原因，测试将不再运行，且错误与你有过.我尝试清洁和重建，但无济于事.经过数小时的沮丧和尝试找到答案之后，我在GitHub线程中遇到了简单的解决方案:

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:

我通过在项目中删除.gradle文件夹并重建项目来解决此问题.

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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