nice-commit

[<bo...@us...>]

Update of /cvsroot/nice/Nice/src/nice/tools/unit
In directory sc8-pr-cvs1.sourceforge.net:/tmp/cvs-serv10457/src/nice/tools/unit

Added Files:
	listener.nice api.nice 
Log Message:
Added NiceUnit.


--- NEW FILE: listener.nice ---
package nice.tools.unit;

interface TestListener
{
  void start(String test);
  void end(String test);
  void failure(String test, Throwable cause);
}

--- NEW FILE: api.nice ---
package nice.tools.unit;

import java.lang.reflect.*;

public boolean runTests(String packageName, TestListener listener,
			?String classpath = null)
{
  let classloader = classpath == null 
    ? ClassLoader.getSystemClassLoader()
    : classloaderFromClasspath(notNull(classpath));

  nice.tools.util.JDK.setDefaultAssertionStatus(classloader, true);

  var Class packageClass;
  try {
    packageClass = classloader.loadClass(packageName + ".fun");
  }
  catch(ClassNotFoundException ex) {
    return false;
  }

  runTests(packageClass, listener);

  return true;
}

public void runTests(Class packageClass, TestListener listener)
{
  Method[] methods = packageClass.getDeclaredMethods();
  methods.filter(isTestMethod).foreach(Method m => runTestMethod(m, listener));
}

public boolean iterLocations
  (String testName, Throwable t, (?String, String, int)->void handleLocation)
{
  let stack = nice.tools.util.JDK.getStackTrace(t);

  if (stack == null)
    return false;

  for (Object stackTraceElement : stack)
    {
      String file = nice.tools.util.JDK.stackFileName(stackTraceElement);
      String method = nice.tools.util.JDK.stackMethodName(stackTraceElement);
      String className = nice.tools.util.JDK.stackClassName(stackTraceElement);
      int lineNumber = nice.tools.util.JDK.stackLineNumber(stackTraceElement);
      handleLocation(file, method, lineNumber);
      // We stop when we reach the start of the test. Going deeper
      // only shows the internals of the test engine, which are not
      // relevant.
      if ((className + "." + method).equals(testName))
	return true;
    }

  return false;
}

boolean isTestMethod(Method m) = 
  m.getName().startsWith("_test") && m.getParameterTypes().length == 0;

void runTestMethod(Method m, TestListener listener)
{
  let name = m.getDeclaringClass().getName() + "." + m.getName();
  
  listener.start(name);
  try 
  {
    m.invoke(null, null);
  } 
  catch (InvocationTargetException e) 
  {
    let cause = e.getTargetException();
    listener.failure(name, cause);
  }
  finally 
  {
    listener.end(name);
  }
}

String replaceLast(String source, char c, String by)
{
  let index = source.lastIndexOf(c);
  if (index == -1) return source;
  
  StringBuffer res = new StringBuffer(source.length() + by.length() - 1);
  res.append(source.substring(0, index));
  res.append(by);
  res.append(source.substring(index + 1));
  
  return res.toString();
}

ClassLoader classloaderFromClasspath(String classpath)
{
  LinkedList<java.net.URL> components = new LinkedList();
    
  int start = 0;
  // skip starting separators
  while (start<classpath.length() && 
	 classpath.charAt(start) == java.io.File.pathSeparatorChar)
    start++;
    
  while (start<classpath.length())
    {
      int end = classpath.indexOf(java.io.File.pathSeparatorChar, start);
      if (end == -1)
	end = classpath.length();
      
      String pathComponent = classpath.substring(start, end);
      if (pathComponent.length() > 0)
	try{
	java.io.File f = new java.io.File(pathComponent);
	if (f.canRead())
	  components.add(f.getCanonicalFile().toURL());
	else
	  {
	    if (!f.exists())
	      System.err.println("Classpath component " + pathComponent + " does not exist");
	    else
	      System.err.println("Classpath component " + pathComponent + " is not readable");
	  }
      }
      catch(java.net.MalformedURLException e){
	System.err.println("Classpath component " + pathComponent + " is invalid");
      }
      catch(java.io.IOException e){
	System.err.println("Classpath component " + pathComponent + " is invalid");
      }
      start = end + 1;
    }

  return new java.net.URLClassLoader(components.toArray(), 
				     /* no parent */ null);
}