标题: 关于安卓实机白盒测试的一些技巧 [打印本页]

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作者: yu844457541    时间: 2021-4-29 13:28
标题: 关于安卓实机白盒测试的一些技巧
一.外部测试用例创建new对象时，构造函数里因执行super(context)；会报错，寻找解决方法

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```java
// super调用到这里
public AbsAction(Context var1) {
        boolean var10000 = true;
        JniLib1606719255.cV(new Object[]{this, var1, 4});
    }
```

1.使用powermock.spy(new ActionExecuter(context));因还是会调用构造函数，*Failed*
2.不能使用打桩@Mock，因为需要测试该类中的其它方法（此为目的）   *Failed*
3.反射：“获取类中的有残构造方法就可以通过反射**执行这个有参构造方法**就可以构建对象” ，*Failed*
4.不创建对象，直接调用方法，根本原理上就无法实现        *Failed*
5.`PowerMockito.mockStatic(JniLib1606719255.class);`也不行，会报错（安卓原生问题）：*Failed*

```java
java.lang.UnsatisfiedLinkError: android.util.Log.println_native(IILjava/lang/String;Ljava/lang/String;)I

        at android.util.Log.println_native(Native Method)
        at android.util.Log.e(Log.java:240)
```
6.外部新建类继承该源码类：因该类只有有参构造函数，继承出来的类中的构造函数还是要执行super才行，否则报错：`There is no default constructor available in 'com.desaysv.adapter.sceneengine.ActionExecuter'`   *Failed*
7.在第6方法上，继承后，写一个有参构造函数，再写一个无参构造函数，也不行。和6同理 *Failed*
8.放弃，改源码，加个无参构造函数，也不行，和6、7同样情况  *Failed*
9.没法搞，该类暂无法单元测试，使用实机的灰盒继承测试

二、Powermockito.doNothing提示错误：

```cpp
Cannot access org.mockito.stubbing.BaseStubber
```
1.添加mockito-all依赖，不行： `testImplementation group: 'org.mockito', name: 'mockito-all', version: '1.10.19'`  *Failed*
2.Mockito-core 3.8+因将DoesNothing()改为了私有，无视即可，直接运行：
```cpp
public static PowerMockitoStubber doNothing() {
        return POWERMOCKITO_CORE.doAnswer(new DoesNothing());
    }
``

```cpp
//.Mockito-core 3.8
   private DoesNothing() {}
```
三、mock对象空指针问题，（记录）

```cpp
//测试代码
repositoryProxy = PowerMockito.mock(RepositoryProxy.class);
repositoryProxy.bind(Mockito.any(),Mockito.any(),Mockito.any());
```
会报错：

```cpp
java.lang.NullPointerException
        at com.desaysv.adapter.sceneengine.manager.MediaManagerTest.init(MediaManagerTest.java:57)
        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
        at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
        at java.lang.reflect.Method.invoke(Method.java:498)
        at org.junit.internal.runners.TestMethod.invoke(TestMethod.java:68)
        at org.powermock.modules.junit4.internal.impl.PowerMockJUnit44RunnerDelegateImpl$PowerMockJUnit44MethodRunner.runTestMethod(PowerMockJUnit44RunnerDelegateImpl.java:316)
        at org.junit.internal.runners.MethodRoadie$2.run(MethodRoadie.java:89)
        at org.junit.internal.runners.MethodRoadie.runBeforesThenTestThenAfters(MethodRoadie.java:97)
        at org.powermock.modules.junit4.internal.impl.PowerMockJUnit44RunnerDelegateImpl$PowerMockJUnit44MethodRunner.executeTest(PowerMockJUnit44RunnerDelegateImpl.java:300)
```
四、Mockito.verify()参数报错问题

```objectivec
//源码
Mockito.verify(repositoryProxy).bind(context,Target.RADIO,Mockito.any());
```

```
org.mockito.exceptions.misusing.InvalidUseOfMatchersException:
Invalid use of argument matchers!
3 matchers expected, 1 recorded:
-> at com.desaysv.adapter.sceneengine.manager.MediaManagerTest.init(MediaManagerTest.java:59)

This exception may occur if matchers are combined with raw values:
    //incorrect:
    someMethod(anyObject(), "raw String");
When using matchers, all arguments have to be provided by matchers.
For example:
    //correct:
    someMethod(anyObject(), eq("String by matcher"));
```
方法：按照要求修改参数，如Matchers.eq(Target.RADIO)，改为：

```objectivec
Mockito.verify(repositoryProxy).bind(Matchers.eq(context),Matchers.eq(Target.RADIO),Mockito.any());
```
此来源：[https://stackoverflow.com/questi ... ofmatchersexception](https://stackoverflow.com/questi ... ofmatchersexception)
五、MeadiPlayer等安卓原生类无法被mock

六、今天ROBO配置与测试卡在如下报错：2021-04-01

```objectivec
WARNING: No manifest file found at .\AndroidManifest.xml.
No such manifest file: .\AndroidManifest.xml
Falling back to the Android OS resources only.
To remove this warning, annotate your test class with @Config(manifest=Config.NONE).
[Robolectric] com.desaysv.adapter.sceneengine.manager.RoboTest.myTest: sdk=27; resources=legacy
[Robolectric] NOTICE: legacy resources mode is deprecated; see robolectric点org/migrating/#migrating-to-40
```
问题点可能出现在@config（）中无法配置如下内容导致，仍待研究。。。
```objectivec
constants = BuildConfig.class
```
七、模拟测试回调函数时，用powermock或者Mockito.doAnswer()都可以，因此可以运用在安卓实机测试上，如：

```objectivec
//onPreparedListener = (MediaPlayer.OnPreparedListener)ol;获取到要测试的回调函数
doAnswer(new Answer<Object>() {
            public Object answer(InvocationOnMock invocation) throws IOException {
                Object[] args = invocation.getArguments();
                Object ol = args[0];
                if(ol instanceof MediaPlayer.OnPreparedListener){
                    onPreparedListener = (MediaPlayer.OnPreparedListener)ol;
                }
                return null;
            }
        }).when(mediaPlayer).setOnPreparedListener(Mockito.any(MediaPlayer.OnPreparedListener.class));
```
来源模仿：[www点voidcn点com/article/p-kpzdmtlj-bsv.html](www点voidcn点com/article/p-kpzdmtlj-bsv.html)
八、安卓实机测试注意 场景/response/空指针 判断

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作者: yu844457541    时间: 2021-4-29 13:29
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