src/android/tests/src/com/google/android/inputmethod/japanese/testing/mocking/AndroidProxyFactory.java

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package org.mozc.android.inputmethod.japanese.testing.mocking;

import org.easymock.ConstructorArgs;
import org.easymock.internal.ClassExtensionHelper;
import org.easymock.internal.IProxyFactory;

import java.io.File;
import java.io.IOException;
import java.lang.reflect.InvocationHandler;

/**
 */
class AndroidProxyFactory<T> implements IProxyFactory<T> {
  private final File dexCache;

  AndroidProxyFactory(File dexCache) {
    this.dexCache = dexCache;
  }

  @Override
  public T createProxy(Class<T> toMock, InvocationHandler handler) {
    try {
      ProxyBuilder<T> builder = ProxyBuilder
          .forClass(toMock).dexCache(dexCache).parentClassLoader(getClass().getClassLoader());

      ConstructorArgs constructorArgs = ClassExtensionHelper.getCurrentConstructorArgs();
      if (constructorArgs != null) {
        builder.constructorArgTypes(constructorArgs.getConstructor().getParameterTypes())
               .constructorArgValues(constructorArgs.getInitArgs());
      }
      return builder.handler(new MockMethodInterceptor(handler)).build();
    } catch (IOException e) {
      throw new AssertionError(e);
    }
  }

  static MockMethodInterceptor getHandler(Object mock) {
    InvocationHandler handler = ProxyBuilder.getInvocationHandler(mock);
    if (handler instanceof MockMethodInterceptor) {
      return MockMethodInterceptor.class.cast(handler);
    }
    return null;
  }
}