MvelRequestBinderTest.java

package com.google.sitebricks.binding;

import com.google.inject.Guice;
import com.google.inject.Provider;
import com.google.sitebricks.Evaluator;
import com.google.sitebricks.TestRequestCreator;
import org.testng.annotations.Test;

import javax.servlet.http.HttpServletRequest;
import java.util.Arrays;
import java.util.HashMap;

import static org.easymock.EasyMock.*;

/**
 * @author Dhanji R. Prasanna (dhanji@gmail.com)
 */
public class MvelRequestBinderTest {
  @Test
  public final void bindRequestToPrimitives() {
    final HttpServletRequest request = createMock(HttpServletRequest.class);

    expect(request.getParameterMap())
        .andReturn(new HashMap<String, String[]>() {{
          put("name", new String[]{"Dhanji"});
          put("age", new String[]{"27"});
          put("alive", new String[]{"true"});
          put("id", new String[]{"12"});
          put("height", new String[]{"6.0"});
        }});

    replay(request);

    final AnObject o = new AnObject();

    final Evaluator evaluator = Guice.createInjector()
        .getInstance(Evaluator.class);

    new MvelRequestBinder(evaluator, new Provider<FlashCache>() {
      public FlashCache get() {
        return new HttpSessionFlashCache();
      }
    }).bind(TestRequestCreator.from(request, null), o);

    assert "Dhanji".equals(o.getName());
    assert 27 == (o.getAge());
    assert 12L == (o.getId());
    assert 6.0 == (o.getHeight());
    assert (o.isAlive());

    verify(request);
  }

  @Test
  public final void bindRequestToCollections() {
    final HttpServletRequest request = createMock(HttpServletRequest.class);
    final String choice = "AChoice";

    //setup preliminary request
    final HttpSessionFlashCache cache = new HttpSessionFlashCache();
    cache.put("names", Arrays.asList("First", choice, "BobLee", "JasonLee", "Mowglee"));

    expect(request.getParameterMap())
        .andReturn(new HashMap<String, String[]>() {{
          put("select",
              new String[]{RequestBinder.COLLECTION_BIND_PREFIX + "names/" + choice.hashCode()});
        }});

    replay(request);

    final AnObject o = new AnObject();

    final Evaluator evaluator = Guice.createInjector()
        .getInstance(Evaluator.class);

    new MvelRequestBinder(evaluator, new Provider<FlashCache>() {
      public FlashCache get() {
        return cache;
      }
    })
        .bind(TestRequestCreator.from(request, null), o);

    assert choice.equals(o.getSelect()) : "Collection selectee was not bound: " + o.getSelect();
    verify(request);
  }

  @Test
  public final void bindRequestToPrimitivesAndIgnoreExtras() {
    final HttpServletRequest request = createMock(HttpServletRequest.class);

    expect(request.getParameterMap())
        .andReturn(new HashMap<String, String[]>() {{
          put("name", new String[]{"Dhanji"});
          put("age", new String[]{"27"});
          put("alive", new String[]{"true"});
          put("id", new String[]{"12"});
          put("height", new String[]{"6.0"});
          put("weight", new String[]{"6.0"});
          put("hiphop", new String[]{"6.0"});
        }});

    replay(request);

    final AnObject o = new AnObject();

    final Evaluator evaluator = Guice.createInjector()
        .getInstance(Evaluator.class);

    new MvelRequestBinder(evaluator, new Provider<FlashCache>() {
      public FlashCache get() {
        return new HttpSessionFlashCache();
      }
    })
        .bind(TestRequestCreator.from(request, null), o);

    assert "Dhanji".equals(o.getName());
    assert 27 == (o.getAge());
    assert 12L == (o.getId());
    assert 6.0 == (o.getHeight());
    assert (o.isAlive());

    verify(request);
  }

  @Test
  public final void bindRequestDetectPartiallyInvalid() {
    final HttpServletRequest request = createMock(HttpServletRequest.class);

    expect(request.getParameterMap())
        .andReturn(new HashMap<String, String[]>() {{
          put("name.toString()", new String[]{"Dhanji"});
          put("2 + 12", new String[]{"27"});
          put("#@!*^&", new String[]{"true"});
          put("id", new String[]{"12"});
          put("heig-ht", new String[]{"6.0"});
        }});

    replay(request);

    final AnObject o = new AnObject();
    final AnObject expected = new AnObject();
    expected.setId(12L);

    final Evaluator evaluator = Guice.createInjector()
        .getInstance(Evaluator.class);

    new MvelRequestBinder(evaluator, new Provider<FlashCache>() {
      public FlashCache get() {
        return new HttpSessionFlashCache();
      }
    }).bind(TestRequestCreator.from(request, null), o);
    System.out.println(o.getId());

    assert expected.equals(o) : "Invalid binding was allowed!";
  }

  @Test
  public final void bindRequestDetectTotallyInvalid() {
    final HttpServletRequest request = createMock(HttpServletRequest.class);

    expect(request.getParameterMap())
        .andReturn(new HashMap<String, String[]>() {{
          put("name.toString()", new String[]{"Dhanji"});
          put("2 + 12", new String[]{"27"});
          put("#@!*^&", new String[]{"true"});
          put("i.d", new String[]{"12"});
          put("hei-ght", new String[]{"6.0"});
        }});

    replay(request);

    final AnObject o = new AnObject();

    final Evaluator evaluator = Guice.createInjector()
        .getInstance(Evaluator.class);

    new MvelRequestBinder(evaluator, new Provider<FlashCache>() {
      public FlashCache get() {
        return new HttpSessionFlashCache();
      }
    })
        .bind(TestRequestCreator.from(request, null), o);

    assert new AnObject().equals(o) : "Invalid binding was allowed!";
  }

  @SuppressWarnings({"UnusedDeclaration"})  
  public static class AnObject {
    private String name;
    private int age;
    private boolean alive;
    private Long id;
    private double height;
    private String select;

    public String getSelect() {
      return select;
    }

    public void setSelect(String select) {
      this.select = select;
    }

    public double getHeight() {
      return height;
    }

    public void setHeight(double height) {
      this.height = height;
    }

    public Long getId() {
      return id;
    }

    public void setId(Long id) {
      this.id = id;
    }

    public boolean isAlive() {
      return alive;
    }

    public void setAlive(boolean alive) {
      this.alive = alive;
    }

    public String getName() {
      return name;
    }

    public void setName(String name) {
      this.name = name;
    }

    public int getAge() {
      return age;
    }

    public void setAge(int age) {
      this.age = age;
    }

    @Override
    public boolean equals(Object o) {
      if (this == o) return true;
      if (o == null || getClass() != o.getClass()) return false;

      AnObject anObject = (AnObject) o;

      if (age != anObject.age) return false;
      if (alive != anObject.alive) return false;
      if (Double.compare(anObject.height, height) != 0) return false;
      if (id != null ? !id.equals(anObject.id) : anObject.id != null) return false;
      if (name != null ? !name.equals(anObject.name) : anObject.name != null) return false;
      if (select != null ? !select.equals(anObject.select) : anObject.select != null) return false;

      return true;
    }

    @Override
    public int hashCode() {
      int result;
      long temp;
      result = name != null ? name.hashCode() : 0;
      result = 31 * result + age;
      result = 31 * result + (alive ? 1 : 0);
      result = 31 * result + (id != null ? id.hashCode() : 0);
      temp = height != +0.0d ? Double.doubleToLongBits(height) : 0L;
      result = 31 * result + (int) (temp ^ (temp >>> 32));
      result = 31 * result + (select != null ? select.hashCode() : 0);
      return result;
    }
  }
}