Why isn't getTestContext found in AndroidTestCase

I'm writing unit tests for a storing class and have to pass a context to that class. I have some trouble to get the context within the junit test.

I tried the solution which is described at Get context of test project in Android junit test case, respectively at http://ift.tt/1MbNgPU.

import android.test.AndroidTestCase;
import android.content.Context;

import org.junit.Test;

import java.lang.reflect.Method;
import java.util.*;

public class MyDataStoreTest extends AndroidTestCase {

private DataStore myDS;
    private Context mContext;

    @Override
    protected void setUp() throws Exception {
        super.setUp();

        try {
            Method getTestContext = AndroidTestCase.class.getMethod("getTestContext");
            mContext = (Context) getTestContext.invoke(this);
        } catch (final Exception exception) {
            exception.printStackTrace();
            throw exception;
        }
    }

    @Test
    public void testOne() {
        System.out.println("Own context: " + String.valueOf(mContext));

        myDS.store("Hello");
        System.out.println("Return: " + myDS.read());
    }

}

It gives me this error message:

java.lang.NoSuchMethodException: android.test.AndroidTestCase.getTestContext()
at java.lang.Class.getMethod(Class.java:1670)
at com.ibm.security.access.mobile.MyDataStoreTest.setUp(MyDataStoreTest.java:25)
at junit.framework.TestCase.runBare(TestCase.java:139)
at junit.framework.TestResult$1.protect(TestResult.java:122)
at junit.framework.TestResult.runProtected(TestResult.java:142)
at junit.framework.TestResult.run(TestResult.java:125)
...

It looks like there is no method getTestContext in AndroidtestCase, which can might be expected, since it's marked as @hide:

/**
 * @hide
 */
public Context getTestContext() {
    return mTestContext;
}

http://ift.tt/1N7J5kC

How can this be solved?