FlatScrollBarLayoutTest.java

/**
 * Copyright (c) 2014 - 2017 Frank Appel
 * All rights reserved. This program and the accompanying materials
 * are made available under the terms of the Eclipse Public License v1.0
 * which accompanies this distribution, and is available at
 * http://www.eclipse.org/legal/epl-v10.html
 *
 * Contributors:
 *   Frank Appel - initial API and implementation
 */
package com.codeaffine.eclipse.swt.widget.scrollbar;

import static com.codeaffine.eclipse.swt.widget.scrollbar.DirectionHelper.stubSizeComputation;
import static org.assertj.core.api.Assertions.assertThat;
import static org.mockito.Mockito.mock;
import static org.mockito.Mockito.verifyNoMoreInteractions;

import org.eclipse.swt.graphics.Point;
import org.eclipse.swt.widgets.Composite;
import org.junit.Test;

public class FlatScrollBarLayoutTest {

  private static final int W_HINT = 10;
  private static final int H_HINT = 20;

  @Test
  public void computeSize() {
    Point expected = new Point( 100, 200 );
    Composite composite = mock( Composite.class );
    Direction direction = stubSizeComputation( composite, expected, W_HINT, H_HINT, true );
    FlatScrollBarLayout layout = new FlatScrollBarLayout( direction );

    Point actual = layout.computeSize( composite, W_HINT, H_HINT, true );

    assertThat( actual ).isSameAs( expected );
  }

  @Test
  public void layoutDoesNothing() {
    FlatScrollBarLayout layout = new FlatScrollBarLayout( null );
    Composite composite = mock( Composite.class );

    layout.layout( composite, true );

    verifyNoMoreInteractions( composite );
  }
}