我正在使用Mockito进行Android无头单元测试,我想要测试的部分在后端,依赖于
在此示例中看到的模拟
所以我有点迷茫。
我的gradle依赖项如下:
我应该模拟
Context
。我尝试模拟Context
,但是当我运行测试时,我得到了null。在此示例中看到的模拟
Context
并没有向我展示如何进行模拟:
https://developer.android.com/training/testing/unit-testing/local-unit-tests.html#setup
上面提到的链接中的示例(https://github.com/googlesamples/android-testing/tree/master/unit/BasicSample)没有展示如何模拟上下文。所以我有点迷茫。
我的gradle依赖项如下:
testCompile 'junit:junit:4.12'
androidTestCompile 'com.android.support.test:runner:0.4'
androidTestCompile 'com.android.support.test:rules:0.4'
androidTestCompile 'com.android.support:support-annotations:23.0.1'
testCompile 'org.mockito:mockito-core:1.10.19'
androidTestCompile('com.android.support.test:testing-support-lib:0.+')
代码片段:
@RunWith(MockitoJUnitRunner.class)
public static Test {
@Mock Context mContext;
RequestQueue mQueue;
@Test public void getCategories(){
final String SERVER = "http://{...}/categories";
mContext = mock(Context.class);
int size = 20;
when(mContext.getResources().getInteger(R.integer.cache_size)).thenReturn(size);
mQueue = VolleyUtil.newRequestQueue(mContext, null, size);
final Response.Listener<String> listener = new Response.Listener(){
//...
}
Response.ErrorListener error = new Response.ErrorListener(){
///...
}
mQueue.add(new JsonRequest(SERVER, listener, error);
}
VolleyUtil.newRequestQueue(final Context context, HttpStack stack, final int cacheMB){
final File cacheDir = new File(context.getCacheDir(), "volley");
if(stack == null) {
if(Build.VERSION.SDK_INT >= 9) {
stack = new HurlStack();
} else {
String userAgent = "volley/0";
try {
final String network = context.getPackageName();
final PackageInfo queue = context.getPackageManager().getPackageInfo(network, 0);
userAgent = network + "/" + queue.versionCode;
} catch (PackageManager.NameNotFoundException e) {
e.printStacktrace();
}
stack = new HttpClientStack(AndroidHttpClient.newInstance(userAgent));
}
}
final BasicNetwork network = new BasicNetwork((HttpStack)stack);
final RequestQueue queue = new RequestQueue(new DiskBasedCache(cacheDir,diskCacheMB*1000000), network);
queue.start();
return queue;
我的空指针异常发生在:
:
final PackageInfo queue = context.getPackageManager().getPackageInfo(network, 0);
我应该模拟
PackageManager
还是 Application
实例?