PS：編寫測(cè)試類時(shí)，一般是在基類中讀取配置文件，并為某些成員賦值。而在MyBuilder中傳入基類的成員變量作為過濾條件是不行的，因?yàn)镸yBuilder的運(yùn)行還在測(cè)試基類之前，此時(shí)基類的任何變量都為null。在MyBuilder中自定義過濾條件的變量，必須在MyBuilder中從配置文件里實(shí)時(shí)讀取。由于基類也需要加載配置文件，為避免重復(fù)加載，建議將讀配置類實(shí)現(xiàn)為單例模式：
public class MyConfiguration {
private volatile static MyConfiguration uniqueInstance;
private Properties propertie;
private FileInputStream inputFile;
private MyConfiguration() {
propertie = new Properties();
}
private MyConfiguration(String configFile) {
propertie = new Properties();
try {
inputFile = new FileInputStream(configFile);
propertie.load(inputFile);
inputFile.close();
} catch (FileNotFoundException ex) {
System.out
.println("load properties file failed! maybe file not exist!");
ex.printStackTrace();
} catch (IOException ex) {
System.out.println("load properties file failed!");
ex.printStackTrace();
}
}
/**
* @return unique instance
*/
public static MyConfiguration getInstance(String configFile) {
if (uniqueInstance == null) {
synchronized (MyConfiguration.class) {
if (uniqueInstance == null) {
uniqueInstance = new MyConfiguration(configFile);
}
}
}
return uniqueInstance;
}
public String getValue(String key) {
if (propertie.containsKey(key)) {
String value = propertie.getProperty(key);
return value;
} else
return "";
}
}
　　相應(yīng)的，MyBuilder可修改為：
public class MyBuilder extends RunnerBuilder {
@Override
public Runner runnerForClass(Class<?> testClass) throws Throwable {
String properties = "src/test/resources/test.properties";
MyConfiguration conf = MyConfiguration.getInstance(properties);
if (testClass.getAnnotation(MyIgnore.class) != null) {
if (!"true".equals(conf.getValue("runFlag")))
return new IgnoredClassRunner(testClass);
}
return new BlockJUnit4ClassRunner(testClass);
}
}