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package org.perl8.test
/** Classes to handle running test instances and providing output. */
package object harness {
import scala.reflect.{ClassTag,classTag}
/** Loads `className`, returning the
* [[http://docs.oracle.com/javase/7/docs/api/java/lang/Class.html Class]]
* instance.
*/
def loadClass[T: ClassTag] (className: String): Class[_] =
classTag[T].runtimeClass.getClassLoader.loadClass(className)
/** Loads `className` and creates a new instance of it, using the
* no-argument constructor.
*/
def newInstance[T: ClassTag] (className: String): T =
loadClass[T](className).newInstance.asInstanceOf[T]
/** Loads `className` and creates a new instance of it, using a
* one-argument constructor. Passes `arg` as the argument to the
* constructor.
*/
def newInstance[T: ClassTag, U <: AnyRef: ClassTag] (
className: String,
arg: U
): T = {
val classObj = loadClass[T](className)
val argClassObj = classTag[U].runtimeClass
val constructor = classObj.getConstructor(argClassObj)
constructor.newInstance(arg).asInstanceOf[T]
}
}
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