com.ixortalk.test.builder.ReflectionInstanceTestBuilder Maven / Gradle / Ivy
/**
* The MIT License (MIT)
*
* Copyright (c) 2016-present IxorTalk CVBA
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in all
* copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*/
package com.ixortalk.test.builder;
import java.lang.reflect.Constructor;
import java.lang.reflect.ParameterizedType;
public abstract class ReflectionInstanceTestBuilder {
public final T build() {
boolean wasAccessible = false;
Constructor constructor = null;
try {
constructor = getInstanceClass().getDeclaredConstructor();
wasAccessible = constructor.isAccessible();
constructor.setAccessible(true);
T instance = constructor.newInstance();
setFields(instance);
return instance;
} catch (Exception e) {
throw new RuntimeException("Error creating test instance via reflection: " + e.getMessage(), e);
} finally {
if (constructor != null) {
constructor.setAccessible(wasAccessible);
}
}
}
private Class getInstanceClass() {
return (Class) ((ParameterizedType) getClass().getGenericSuperclass()).getActualTypeArguments()[0];
}
public abstract void setFields(T instance);
}