Test example

MainActivity.java

package com.example.test;


import android.content.Intent;
import android.content.pm.ActivityInfo;
import android.graphics.PointF;
import android.net.Uri;
import android.os.ConditionVariable;
import android.support.annotation.NonNull;
import android.support.annotation.Nullable;
import android.test.suitebuilder.annotation.LargeTest;
import android.test.suitebuilder.annotation.MediumTest;

import java.io.File;
import java.io.IOException;
import java.util.ArrayList;

public class ActivityTest extends ActivityInstrumentationTestCase2<ExampleActivity> {

    public ActivityTest() {
        super(ExampleActivity.class);
    }

    @Override
    protected void setUp() throws Exception {
        super.setUp();
        // Setup logic goes here
    }

    // Make sure the test methods start with name "test"
    public void testDocumentOpen() {
        ExampleActivity activity = getActivity(); // This will actually start the activity
        getInstrumentation().waitForIdleSync();   // Wait for animations to complete and acitvity enter idle state
        
        Assert.assertNotNull(null);
    }
}