棉花糖PermissionHelper的Android Robolectric单元测试 [英] Android Robolectric unit test for Marshmallow PermissionHelper

问题描述

我想学习Robolectric，将其用于Android Marshmallow应用程序上的单元测试.我用一些方法编写了PermissionHelper，使权限处理更加容易.为了开始使用此类的单元测试，我正在尝试测试最简单的方法:

I wanna learn Robolectric to use it for unit tests on an Android Marshmallow app. I wrote a PermissionHelper with some methods to make permission handling a bit easier. To get started with unit tests for this class, I am trying to test the most simple method:

public static boolean hasPermissions(Activity activity, String[] permissions) {
    for (String permission : permissions) {
        int status = ActivityCompat.checkSelfPermission(activity, permission);
        if (status == PackageManager.PERMISSION_DENIED) {
            return false;
        }
    }
    return true;
}

这是我到目前为止编写的Robolectric测试:

Here is the Robolectric test that I wrote so far:

@RunWith(RobolectricTestRunner.class)
@Config(constants = BuildConfig.class)
public class PermissionHelperTest {

    private PermissionHelper permissionHelper;
    private ShadowApplication application;

    @Before
    public void setup() {
        PictureActivity activity = Robolectric.buildActivity(PictureActivity.class).get();
        permissionHelper = new PermissionHelper(activity, activity, 1);
        application = new ShadowApplication();
    }

    @Test
    public void testHasPermission() throws Exception {
        String[] permissions = new String[]{Manifest.permission.RECORD_AUDIO, Manifest.permission.WRITE_EXTERNAL_STORAGE};
        boolean hasPermissions = permissionHelper.hasPermissions(permissions);
        Assert.assertEquals(false, hasPermissions);

        application.grantPermissions(permissions);
        hasPermissions = permissionHelper.hasPermissions(permissions);
        Assert.assertEquals(true, hasPermissions);
    }
}

第一个断言有效(未授予权限).但是，在通过ShadowApplication授予所有权限之后，它们仍将在下一个断言中被拒绝.

The first Assert works (no permission granted). But after granting all permissions via the ShadowApplication they are still denied in the next Assert.

我认为用Robolectric.buildActivity()创建的PictureActivity没有使用ShadowApplication进行权限检查.但是PictureActivity.getApplication()并没有给我ShadowApplication来调用grantPermissions.我该如何测试?

I think that the PictureActivity created with Robolectric.buildActivity() is not using the ShadowApplication for the permission checks. But PictureActivity.getApplication() does not give me a ShadowApplication to call grantPermissions on. How can I test this?

我是Robolectric和Android上的单元测试的新手...因此，如果有其他框架可以使此操作变得容易/可行:我愿意征求建议.

I am new to Robolectric and unit testing on Android...so if there is any other framework that makes this easier/possible: I am open for suggestions.

推荐答案

在Robolectric 4.2中，您可以使用:

From Robolectric 4.2 you can use:

Application application = ApplicationProvider.getApplicationContext();
ShadowApplication app = Shadows.shadowOf(application);
app.grantPermissions(Manifest.permission.WRITE_EXTERNAL_STORAGE,
            Manifest.permission.READ_EXTERNAL_STORAGE);

这篇关于棉花糖PermissionHelper的Android Robolectric单元测试的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！