change repository's url of RobolectricTestRunner

MyTestRunner.java

import org.apache.maven.artifact.ant.DependenciesTask;
import org.apache.maven.artifact.ant.RemoteRepository;
import org.apache.maven.model.Dependency;
import org.apache.tools.ant.Project;
import org.junit.runners.model.InitializationError;
import org.robolectric.RobolectricTestRunner;
import org.robolectric.internal.dependency.DependencyJar;
import org.robolectric.internal.dependency.DependencyResolver;
import org.robolectric.util.Util;

import java.net.MalformedURLException;
import java.net.URL;
import java.util.Hashtable;

public final class MyTestRunner extends RobolectricTestRunner {
  public MyTestRunner(Class<?> testClass) throws InitializationError {
    super(testClass);
  }

  @Override protected DependencyResolver getJarResolver() {
    return new CustomDependencyResolver();
  }

  static final class CustomDependencyResolver implements DependencyResolver {
    private final Project project = new Project();

    @Override public URL[] getLocalArtifactUrls(DependencyJar... dependencies) {
      DependenciesTask dependenciesTask = new DependenciesTask();
      RemoteRepository repository = new RemoteRepository();
      repository.setUrl("http://maven.aliyun.com/nexus/content/groups/public/");
      repository.setId("aliyun");
      dependenciesTask.addConfiguredRemoteRepository(repository);
      dependenciesTask.setProject(project);
      for (DependencyJar dependencyJar : dependencies) {
        Dependency dependency = new Dependency();
        dependency.setArtifactId(dependencyJar.getArtifactId());
        dependency.setGroupId(dependencyJar.getGroupId());
        dependency.setType(dependencyJar.getType());
        dependency.setVersion(dependencyJar.getVersion());
        if (dependencyJar.getClassifier() != null) {
          dependency.setClassifier(dependencyJar.getClassifier());
        }
        dependenciesTask.addDependency(dependency);
      }
      dependenciesTask.execute();

      @SuppressWarnings("unchecked")
      Hashtable<String, String> artifacts = project.getProperties();
      URL[] urls = new URL[dependencies.length];
      for (int i = 0; i < urls.length; i++) {
        try {
          urls[i] = Util.url(artifacts.get(key(dependencies[i])));
        } catch (MalformedURLException e) {
          throw new RuntimeException(e);
        }
      }
      return urls;
    }

    @Override public URL getLocalArtifactUrl(DependencyJar dependency) {
      URL[] urls = getLocalArtifactUrls(dependency);
      if (urls.length > 0) {
        return urls[0];
      }
      return null;
    }

    private String key(DependencyJar dependency) {
      String key =
          dependency.getGroupId() + ":" + dependency.getArtifactId() + ":" + dependency.getType();
      if (dependency.getClassifier() != null) {
        key += ":" + dependency.getClassifier();
      }
      return key;
    }
  }
}