UIAutomator源码分析之启动和运行

/*     */   private int parseArgs(String[] args) /*     */   { /* 105 */     for (int i = 0; i < args.length; i++) { /* 106 */       if (args[i].equals("-e")) { /* 107 */         if (i + 2 < args.length) { /* 108 */           String key = args[(++i)]; /* 109 */           String value = args[(++i)]; /* 110 */           if ("class".equals(key)) { /* 111 */             addTestClasses(value); /* 112 */           } else if ("debug".equals(key)) { /* 113 */             this.mDebug = (("true".equals(value)) || ("1".equals(value))); /* 114 */           } else if ("runner".equals(key)) { /* 115 */             this.mRunnerClassName = value; /*     */           } else { /* 117 */             this.mParams.putString(key, value); /*     */           } /*     */         } else { /* 120 */           return -1; /*     */         } /* 122 */       } else if (args[i].equals("-c")) { /* 123 */         if (i + 1 < args.length) { /* 124 */           addTestClasses(args[(++i)]); /*     */         } else { /* 126 */           return -2; /*     */         } /* 128 */       } else if (args[i].equals("--monkey")) { /* 129 */         this.mMonkey = true; /* 130 */       } else if (args[i].equals("-s")) { /* 131 */         this.mParams.putString("outputFormat", "simple"); /*     */       } else { /* 133 */         return -99; /*     */       } /*     */     } /* 136 */     return 0; /*     */   }

• 106-117行：判断是否有－e参数，有指定debug的话就启动debug；有指定runner的就设置runner；有指定class的话就通过addTestClasses把该测试脚本类加入到mTestClasses列表；有指定其他键值对的就保存起来到mParams这个map里面，比如我们例子种是没有指定debug和runner，但shell脚本自动会通过－e加上一个键值为jars的键值对，值就是我们的测试脚本jar包存放的路径
• 122-129行：判断是否有－c参数，有的话就把对应的class加入到RunTestCommand对象的mTestClasses这个列表里面，注意每个class需要用逗号分开：

  /*     */   private void addTestClasses(String classes) /*     */   { /* 181 */     String[] classArray = classes.split(","); /* 182 */     for (String clazz : classArray) { /* 183 */       this.mTestClasses.add(clazz); /*     */     } /*     */   }

• 其他参数处理...

3.2 获取测试集(类)字串列表

3.3 获取TestRunner

/*     */   protected UiAutomatorTestRunner getRunner() { /* 140 */     if (this.mRunner != null) { /* 141 */       return this.mRunner; /*     */     } /*     */      /* 144 */     if (this.mRunnerClassName == null) { /* 145 */       this.mRunner = new UiAutomatorTestRunner(); /* 146 */       return this.mRunner; /*     */     } /*     */      /* 149 */     Object o = null; /*     */     try { /* 151 */       Class clazz = Class.forName(this.mRunnerClassName); /* 152 */       o = clazz.newInstance(); /*     */     } catch (ClassNotFoundException cnfe) { /* 154 */       System.err.println("Cannot find runner: " + this.mRunnerClassName); /* 155 */       System.exit(-4); /*     */     } catch (InstantiationException ie) { /* 157 */       System.err.println("Cannot instantiate runner: " + this.mRunnerClassName); /* 158 */       System.exit(-4); /*     */     } catch (IllegalAccessException iae) { /* 160 */       System.err.println("Constructor of runner " + this.mRunnerClassName + " is not accessibile"); /* 161 */       System.exit(-4); /*     */     } /*     */     try { /* 164 */       UiAutomatorTestRunner runner = (UiAutomatorTestRunner)o; /* 165 */       this.mRunner = runner; /* 166 */       return runner; /*     */     } catch (ClassCastException cce) { /* 168 */       System.err.println("Specified runner is not subclass of " + UiAutomatorTestRunner.class.getSimpleName()); /*     */        /* 170 */       System.exit(-4); /*     */     } /*     */      /* 173 */     return null; /*     */   }

• 用户有没有在命令行通过－e runner指定TestRunner,有的话就用该TestRunner
• 用户没有指定TestRunner的话就用默认的UiAutomatorTestRunner

3.4 每个方法建立junit.framework.TestCase

/*     */   public void run(List testClasses, Bundle params, boolean debug, boolean monkey) /*     */   {                 ... /*  92 */     this.mTestClasses = testClasses; /*  93 */     this.mParams = params; /*  94 */     this.mDebug = debug; /*  95 */     this.mMonkey = monkey; /*  96 */     start(); /*  97 */     System.exit(0); /*     */   }

/*     */   protected void start() /*     */   { /* 104 */     TestCaseCollector collector = getTestCaseCollector(getClass().getClassLoader()); /*     */     try { /* 106 */       collector.addTestClasses(this.mTestClasses); /*     */     }         ... }

/*     */   public void addTestClasses(List classNames) /*     */     throws ClassNotFoundException /*     */   { /*  52 */     for (String className : classNames) { /*  53 */       addTestClass(className); /*     */     } /*     */   }

/*     */   public void addTestClass(String className) /*     */     throws ClassNotFoundException /*     */   { /*  66 */     int hashPos = className.indexOf('#'); /*  67 */     String methodName = null; /*  68 */     if (hashPos != -1) { /*  69 */       methodName = className.substring(hashPos + 1); /*  70 */       className = className.substring(0, hashPos); /*     */     } /*  72 */     addTestClass(className, methodName); /*     */   }

/*     */   public void addTestClass(String className, String methodName) /*     */     throws ClassNotFoundException /*     */   { /*  84 */     Class clazz = this.mClassLoader.loadClass(className); /*  85 */     if (methodName != null) { /*  86 */       addSingleTestMethod(clazz, methodName); /*     */     } else { /*  88 */       Method[] methods = clazz.getMethods(); /*  89 */       for (Method method : methods) { /*  90 */         if (this.mFilter.accept(method)) { /*  91 */           addSingleTestMethod(clazz, method.getName()); /*     */         } /*     */       } /*     */     } /*     */   }

/*     */   protected void addSingleTestMethod(Class clazz, String method) { /* 106 */     if (!this.mFilter.accept(clazz)) { /* 107 */       throw new RuntimeException("Test class must be derived from UiAutomatorTestCase"); /*     */     } /*     */     try { /* 110 */       TestCase testCase = (TestCase)clazz.newInstance(); /* 111 */       testCase.setName(method); /* 112 */       this.mTestCases.add(testCase); /*     */     } catch (InstantiationException e) { /* 114 */       this.mTestCases.add(error(clazz, "InstantiationException: could not instantiate test class. Class: " + clazz.getName())); /*     */     } /*     */     catch (IllegalAccessException e) { /* 117 */       this.mTestCases.add(error(clazz, "IllegalAccessException: could not instantiate test class. Class: " + clazz.getName())); /*     */     } /*     */   }

/*     */   protected void start() /*     */   {         ... /* 117 */     UiAutomationShellWrapper automationWrapper = new UiAutomationShellWrapper(); /* 118 */     automationWrapper.connect(); /*     */              ... /*     */     try { /* 132 */       automationWrapper.setRunAsMonkey(this.mMonkey);                     ...               }     ... }

/*     */   protected void start() /*     */   {         ... /*     */     try { /* 132 */       automationWrapper.setRunAsMonkey(this.mMonkey); /* 133 */       this.mUiDevice = UiDevice.getInstance(); /* 134 */       this.mUiDevice.initialize(new ShellUiAutomatorBridge(automationWrapper.getUiAutomation())); /*     */                   ...        }     ... } 

4. 启动junit测试

package majcit.com.UIAutomatorDemo;  import com.android.uiautomator.core.UiDevice; import com.android.uiautomator.core.UiObject; import com.android.uiautomator.core.UiObjectNotFoundException; import com.android.uiautomator.core.UiScrollable; import com.android.uiautomator.core.UiSelector; import com.android.uiautomator.testrunner.UiAutomatorTestCase;   public class UISelectorFindElementTest extends UiAutomatorTestCase { 	 	 public void testDemo() throws UiObjectNotFoundException {   	        UiDevice device = getUiDevice(); 	        device.pressHome();  

/*     */  /*     */   protected void start() /*     */   {                 ... /* 158 */       for (TestCase testCase : testCases) { /* 159 */         prepareTestCase(testCase); /* 160 */         testCase.run(testRunResult); /*     */       }                 ... }

/*     */   protected void prepareTestCase(TestCase testCase) /*     */   { /* 427 */     ((UiAutomatorTestCase)testCase).setAutomationSupport(this.mAutomationSupport); /* 428 */     ((UiAutomatorTestCase)testCase).setUiDevice(this.mUiDevice); /* 429 */     ((UiAutomatorTestCase)testCase).setParams(this.mParams); /*     */   }

/*     */   void setUiDevice(UiDevice uiDevice) /*     */   { /* 100 */     this.mUiDevice = uiDevice; /*     */   }

/*     */   public UiDevice getUiDevice() /*     */   { /*  72 */     return this.mUiDevice; /*     */   }

	protected void runTest() throws Throwable { 		assertNotNull(fName); // Some VMs crash when calling getMethod(null,null); 		Method runMethod= null; 		try { 			// use getMethod to get all public inherited 			// methods. getDeclaredMethods returns all 			// methods of this class but excludes the 			// inherited ones. 			runMethod= getClass().getMethod(fName, (Class[])null); 		} catch (NoSuchMethodException e) { 			fail("Method \""+fName+"\" not found"); 		} 		if (!Modifier.isPublic(runMethod.getModifiers())) { 			fail("Method \""+fName+"\" should be public"); 		}  		try { 			runMethod.invoke(this, (Object[])new Class[0]); 		} 		catch (InvocationTargetException e) { 			e.fillInStackTrace(); 			throw e.getTargetException(); 		} 		catch (IllegalAccessException e) { 			e.fillInStackTrace(); 			throw e; 		} 	}