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package junit.runner;
import java.lang.reflect.*;
import junit.runner.*;
import junit.framework.*;
/**
* An implementation of a TestCollector that loads
* all classes on the class path and tests whether
* it is assignable from Test or provides a static suite method.
* @see TestCollector
*/
public class LoadingTestCollector extends ClassPathTestCollector {
TestCaseClassLoader fLoader;
public LoadingTestCollector() {
fLoader= new TestCaseClassLoader();
}
protected boolean isTestClass(String classFileName) {
try {
if (classFileName.endsWith(".class")) {
Class testClass= classFromFile(classFileName);
return (testClass != null) && isTestClass(testClass);
}
}
catch (ClassNotFoundException expected) {
}
catch (NoClassDefFoundError notFatal) {
}
return false;
}
Class classFromFile(String classFileName) throws ClassNotFoundException {
String className= classNameFromFile(classFileName);
if (!fLoader.isExcluded(className))
return fLoader.loadClass(className, false);
return null;
}
boolean isTestClass(Class testClass) {
if (hasSuiteMethod(testClass))
return true;
if (Test.class.isAssignableFrom(testClass) &&
Modifier.isPublic(testClass.getModifiers()) &&
hasPublicConstructor(testClass))
return true;
return false;
}
boolean hasSuiteMethod(Class testClass) {
try {
testClass.getMethod(BaseTestRunner.SUITE_METHODNAME, new Class[0]);
} catch(Exception e) {
return false;
}
return true;
}
boolean hasPublicConstructor(Class testClass) {
try {
TestSuite.getTestConstructor(testClass);
} catch(NoSuchMethodException e) {
return false;
}
return true;
}
}
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