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Spock is a testing and specification framework for Java and Groovy applications. What makes it stand out from the crowd is its beautiful and highly expressive specification language. Thanks to its JUnit runner, Spock is compatible with most IDEs, build tools, and continuous integration servers. Spock is inspired from JUnit, jMock, RSpec, Groovy, Scala, Vulcans, and other fascinating life forms.

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/*
 * Copyright 2011 the original author or authors.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *     https://www.apache.org/licenses/LICENSE-2.0
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package org.spockframework.junit4;

import org.spockframework.runtime.extension.IMethodInvocation;
import org.spockframework.runtime.model.FieldInfo;

import java.util.List;

import org.junit.rules.MethodRule;
import org.junit.runners.model.*;

public class MethodRuleInterceptor extends AbstractRuleInterceptor {
  MethodRuleInterceptor(List ruleFields) {
    super(ruleFields);
  }

  @Override
  public void intercept(final IMethodInvocation invocation) throws Throwable {
    Statement statement = createBaseStatement(invocation);
    FrameworkMethod method = createFrameworkMethod(invocation);

    for (FieldInfo field : ruleFields) {
      MethodRule rule = (MethodRule) getRuleInstance(field, invocation.getInstance());
      statement = rule.apply(statement, method, invocation.getInstance());
    }

    statement.evaluate();
  }

  private FrameworkMethod createFrameworkMethod(final IMethodInvocation invocation) {
    return new FrameworkMethod(invocation.getIteration().getParent().getFeatureMethod().getReflection()) {
      @Override
      public String getName() {
        return invocation.getIteration().getName();
      }
    };
  }
}