標(biāo)題: 關(guān)于安卓實(shí)機(jī)白盒測試的一些技巧 [打印本頁]
作者: yu844457541    時(shí)間: 2021-4-29 13:28
標(biāo)題: 關(guān)于安卓實(shí)機(jī)白盒測試的一些技巧
一.外部測試用例創(chuàng)建new對(duì)象時(shí)，構(gòu)造函數(shù)里因執(zhí)行super(context)；會(huì)報(bào)錯(cuò)，尋找解決方法

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

1.使用powermock.spy(new ActionExecuter(context));因還是會(huì)調(diào)用構(gòu)造函數(shù)，*Failed*
2.不能使用打樁@Mock，因?yàn)樾枰獪y試該類中的其它方法（此為目的）   *Failed*
3.反射：“獲取類中的有殘構(gòu)造方法就可以通過反射**執(zhí)行這個(gè)有參構(gòu)造方法**就可以構(gòu)建對(duì)象” ，*Failed*
4.不創(chuàng)建對(duì)象，直接調(diào)用方法，根本原理上就無法實(shí)現(xiàn)        *Failed*
5.`PowerMockito.mockStatic(JniLib1606719255.class);`也不行，會(huì)報(bào)錯(cuò)（安卓原生問題）：*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.外部新建類繼承該源碼類：因該類只有有參構(gòu)造函數(shù)，繼承出來的類中的構(gòu)造函數(shù)還是要執(zhí)行super才行，否則報(bào)錯(cuò)：`There is no default constructor available in 'com.desaysv.adapter.sceneengine.ActionExecuter'`   *Failed*
7.在第6方法上，繼承后，寫一個(gè)有參構(gòu)造函數(shù)，再寫一個(gè)無參構(gòu)造函數(shù)，也不行。和6同理 *Failed*
8.放棄，改源碼，加個(gè)無參構(gòu)造函數(shù)，也不行，和6、7同樣情況  *Failed*
9.沒法搞，該類暫無法單元測試，使用實(shí)機(jī)的灰盒繼承測試

二、Powermockito.doNothing提示錯(cuò)誤：

```cpp
Cannot access org.mockito.stubbing.BaseStubber
```
1.添加mockito-all依賴，不行： `testImplementation group: 'org.mockito', name: 'mockito-all', version: '1.10.19'`  *Failed*
2.Mockito-core 3.8+因?qū)oesNothing()改為了私有，無視即可，直接運(yùn)行：
```cpp
public static PowerMockitoStubber doNothing() {
        return POWERMOCKITO_CORE.doAnswer(new DoesNothing());
    }
``

```cpp
//.Mockito-core 3.8
   private DoesNothing() {}
```
三、mock對(duì)象空指針問題，（記錄）

```cpp
//測試代碼
repositoryProxy = PowerMockito.mock(RepositoryProxy.class);
repositoryProxy.bind(Mockito.any(),Mockito.any(),Mockito.any());
```
會(huì)報(bào)錯(cuò)：

```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()參數(shù)報(bào)錯(cuò)問題

```objectivec
//源碼
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：按照要求修改參數(shù)，如Matchers.eq(Target.RADIO)，改為：

```objectivec
Mockito.verify(repositoryProxy).bind(Matchers.eq(context),Matchers.eq(Target.RADIO),Mockito.any());
```
此來源：[https://stackoverflow.com/questi ... ofmatchersexception](https://stackoverflow.com/questi ... ofmatchersexception)
五、MeadiPlayer等安卓原生類無法被mock

六、今天ROBO配置與測試卡在如下報(bào)錯(cuò)：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點(diǎn)org/migrating/#migrating-to-40
```
問題點(diǎn)可能出現(xiàn)在@config（）中無法配置如下內(nèi)容導(dǎo)致，仍待研究。。。
```objectivec
constants = BuildConfig.class
```
七、模擬測試回調(diào)函數(shù)時(shí)，用powermock或者M(jìn)ockito.doAnswer()都可以，因此可以運(yùn)用在安卓實(shí)機(jī)測試上，如：

```objectivec
//onPreparedListener = (MediaPlayer.OnPreparedListener)ol;獲取到要測試的回調(diào)函數(shù)
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));
```
來源模仿：[www點(diǎn)voidcn點(diǎn)com/article/p-kpzdmtlj-bsv.html](www點(diǎn)voidcn點(diǎn)com/article/p-kpzdmtlj-bsv.html)
八、安卓實(shí)機(jī)測試注意 場景/response/空指針 判斷

作者: yu844457541    時(shí)間: 2021-4-29 13:29
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