TwoWayProgressAttributeTest.java

package org.robobinding.widget.seekbar;

import static org.hamcrest.CoreMatchers.equalTo;
import static org.hamcrest.CoreMatchers.is;
import static org.junit.Assert.assertThat;
import static org.junit.Assert.assertTrue;

import org.junit.Before;
import org.junit.Test;
import org.robobinding.property.ValueModel;
import org.robobinding.util.RandomValues;
import org.robobinding.viewattribute.ValueModelUtils;
import org.robolectric.annotation.Config;

/**
 * 
 * @since 1.0
 * @version $Revision: 1.0 $
 * @author Robert Taylor
 */
@Config(manifest = Config.NONE)
public class TwoWayProgressAttributeTest extends AbstractSeekBarAttributeTest {
	private TwoWayProgressAttribute attribute;
	
	@Before
	public void setUp() {
		attribute = new TwoWayProgressAttribute();
	}
	
	@Test
	public void whenUpdateView_thenViewShouldReflectChanges() {
		int newProgressValue = RandomValues.anyInteger();

		attribute.updateView(view, newProgressValue, null);

		assertThat(view.getProgress(), is(newProgressValue));
	}

	@Test
	public void whenObserveChangesOnTheView_thenValueModelShouldReceiveTheChange() {
		ValueModel<Integer> valueModel = ValueModelUtils.create();
		attribute.observeChangesOnTheView(viewAddOn, valueModel, view);

		int newProgressValue = RandomValues.anyInteger();
		view.setProgress(newProgressValue);

		assertThat(valueModel.getValue(), equalTo(newProgressValue));
	}

	@Test
	public void whenObserveChangesOnTheView_thenRegisterWithViewListeners() {
		attribute.observeChangesOnTheView(viewAddOn, null, null);

		assertTrue(viewAddOn.addOnSeekBarChangeListenerInvoked);
	}
}