grocerymonkey test

groceryservlettest.java

package mobi.grocerymonkey.groceryapp;

import static com.google.common.truth.Truth.assertThat;
import static org.mockito.Mockito.when;
import static org.mockito.Mockito.mock;

import com.google.appengine.tools.development.testing.LocalServiceTestHelper;
import com.google.appengine.tools.development.testing.LocalDatastoreServiceTestConfig;
import com.google.cloud.datastore.DatastoreOptions;

import com.google.cloud.datastore.DatastoreOptions;
import com.googlecode.objectify.ObjectifyFactory;
import com.googlecode.objectify.ObjectifyService;
import com.googlecode.objectify.Objectify;

import org.junit.After;
import org.junit.Before;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.junit.runners.JUnit4;
import org.mockito.Mock;
import org.mockito.MockitoAnnotations;
import org.json.JSONObject;

import java.io.PrintWriter;
import java.io.StringWriter;
import java.io.BufferedReader;
import java.io.StringReader;
import java.io.Reader;
import java.io.Closeable;
import java.io.IOException;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.ServletContext;
import javax.servlet.ServletContextListener;
import javax.servlet.ServletContextEvent;

import static mobi.grocerymonkey.groceryapp.service.OfyService.ofy;

/**
 * 
 */
@RunWith(JUnit4.class)
public class GroceryServletTest {
  private static final String MOCK_URL = "/grocery";
  // Set up a helper so that the ApiProxy returns a valid environment for local testing.
  private final LocalServiceTestHelper helper =
    new LocalServiceTestHelper(new LocalDatastoreServiceTestConfig()
      .setDefaultHighRepJobPolicyUnappliedJobPercentage(100));
  private Closeable closeable;

  @Mock
  private HttpServletRequest mockRequest;
  
  @Mock
  private HttpServletResponse mockResponse;

  private ServletContextListener contextListener;
  private ServletContext context;

  private StringWriter responseWriter;
  private GroceryServlet servletUnderTest;

  @Before
  public void setUp() throws Exception {
    MockitoAnnotations.initMocks(this);
    helper.setUp();
    ObjectifyService.init();

    // contextListener = new GroceryContextListener();
    // context = mock(ServletContext.class);

    //  Set up some fake HTTP requests
    when(mockRequest.getRequestURI()).thenReturn(MOCK_URL);

    JSONObject grocery = new JSONObject();
    grocery.put("name", "Beer");

    Reader inputString = new StringReader(grocery.toString());
    BufferedReader reader = new BufferedReader(inputString);
    when(mockRequest.getReader()).thenReturn(reader);

    // when(mockRequest.getServletContext()).thenReturn(context);

    // Set up a fake HTTP response.
    responseWriter = new StringWriter();
    when(mockResponse.getWriter()).thenReturn(new PrintWriter(responseWriter));

    servletUnderTest = new GroceryServlet();
  }

  @After 
  public void tearDown() throws Exception {
    helper.tearDown();
  }

  @Test
  public void doGetWritesResponse() throws Exception {
    servletUnderTest.doGet(mockRequest, mockResponse);

    // We expect our hello world response.
    assertThat(responseWriter.toString())
        .contains("Hello Kitty");
  }

  @Test
  public void doPostWritesResponse() throws Exception {
    // contextListener.contextInitialized(new ServletContextEvent(context));

    JSONObject reqObj = new JSONObject();
    reqObj.put("name", "Beer");
    reqObj.put("quantity", 5);
    StringReader reader = new StringReader(reqObj.toString());

    when(mockRequest.getReader()).thenReturn(new BufferedReader(new StringReader(reqObj.toString())));

    servletUnderTest.doPost(mockRequest, mockResponse);

    // We expect our hello world response.
    assertThat(responseWriter.toString())
        .contains(reqObj.getString("name"));
  }
}