CachedAreaProviderTest.java

package de.lessvoid.nifty.render.image.areaprovider;

import static org.easymock.EasyMock.createMock;
import static org.easymock.EasyMock.expect;
import static org.easymock.EasyMock.replay;
import static org.easymock.EasyMock.verify;
import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertNotSame;
import static org.junit.Assert.assertSame;

import org.junit.Test;

import de.lessvoid.nifty.Size;
import de.lessvoid.nifty.layout.Box;
import de.lessvoid.nifty.render.NiftyImage;
import de.lessvoid.nifty.spi.render.RenderImage;

public class CachedAreaProviderTest {

  @Test
  public void testGetSourceAreaReturnsSameAreaAsCachedProvider() {
    RenderImage image = createMock(RenderImage.class);

    AreaProvider areaProvider = createMock(AreaProvider.class);
    expect(areaProvider.getSourceArea(image)).andReturn(new Box(1, 2, 3, 4)).anyTimes();
    replay(areaProvider);

    CachedAreaProvider cachedAreaProvider = new CachedAreaProvider(areaProvider);
    assertEquals(cachedAreaProvider.getSourceArea(image), areaProvider.getSourceArea(image));

    verify(areaProvider);
  }

  @Test
  public void testGetSourceAreaCachesReturnedValueForASingleImage() {
    RenderImage image = createMock(RenderImage.class);

    AreaProvider areaProvider = createMock(AreaProvider.class);
    expect(areaProvider.getSourceArea(image)).andReturn(new Box(1, 2, 3, 4));
    replay(areaProvider);

    CachedAreaProvider cachedAreaProvider = new CachedAreaProvider(areaProvider);
    assertSame(cachedAreaProvider.getSourceArea(image), cachedAreaProvider.getSourceArea(image));

    verify(areaProvider);
  }

  @Test
  public void testGetSourceAreaInvalidatesCachedAreaForADifferentImage() {
    RenderImage firstImage = createMock(RenderImage.class);
    RenderImage secondImage = createMock(RenderImage.class);

    AreaProvider areaProvider = createMock(AreaProvider.class);
    expect(areaProvider.getSourceArea(firstImage)).andReturn(new Box(1, 2, 3, 4));
    expect(areaProvider.getSourceArea(secondImage)).andReturn(new Box(1, 2, 3, 4));
    replay(areaProvider);

    CachedAreaProvider cachedAreaProvider = new CachedAreaProvider(areaProvider);
    assertNotSame(cachedAreaProvider.getSourceArea(firstImage), cachedAreaProvider.getSourceArea(secondImage));

    verify(areaProvider);
  }

  @Test
  public void testSetParametersInvalidatesCachedArea() {
    RenderImage image = createMock(RenderImage.class);

    AreaProvider areaProvider = createMock(AreaProvider.class);

    CachedAreaProvider cachedAreaProvider = new CachedAreaProvider(areaProvider);
    expect(areaProvider.getSourceArea(image)).andReturn(new Box(1, 2, 3, 4));
    expect(areaProvider.getSourceArea(image)).andReturn(new Box(1, 2, 3, 4));
    replay(areaProvider);

    Box firstArea = cachedAreaProvider.getSourceArea(image);
    cachedAreaProvider.setParameters(null);

    Box secondArea = cachedAreaProvider.getSourceArea(image);
    assertNotSame(firstArea, secondArea);

    verify(areaProvider);
  }

  @Test
  public void testGetNativeSizeReturnsReturnsSameSizeAsCachedProvider() {
    NiftyImage image = createMock(NiftyImage.class);

    AreaProvider areaProvider = createMock(AreaProvider.class);
    expect(areaProvider.getNativeSize(image)).andReturn(new Size(1, 2)).anyTimes();
    replay(areaProvider);

    CachedAreaProvider cachedAreaProvider = new CachedAreaProvider(areaProvider);
    assertEquals(cachedAreaProvider.getNativeSize(image), areaProvider.getNativeSize(image));

    verify(areaProvider);
  }
}