/*******************************************************************************
* Copyright (c) 2014 EclipseSource and others.
* 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:
* EclipseSource - initial API and implementation
******************************************************************************/
package com.eclipsesource.tabris.passepartout.internal.instruction;
import static org.junit.Assert.assertEquals;
import static org.mockito.Mockito.mock;
import java.math.BigDecimal;
import org.junit.Test;
import com.eclipsesource.tabris.passepartout.Bounds;
import com.eclipsesource.tabris.passepartout.PassePartout;
import com.eclipsesource.tabris.passepartout.Unit;
import com.eclipsesource.tabris.passepartout.internal.unit.Em;
import com.eclipsesource.tabris.passepartout.internal.unit.Percentage;
public class HeightInstructionTest {
@Test( expected = IllegalArgumentException.class )
public void testFailsWithNullUnit() {
new HeightInstruction( null );
}
@Test( expected = IllegalArgumentException.class )
public void testFailsWithNullParentBounds() {
HeightInstruction instruction = new HeightInstruction( mock( Unit.class ) );
instruction.computeHeight( null, 16 );
}
@Test( expected = IllegalArgumentException.class )
public void testFailsWithNegativeFontSize() {
HeightInstruction instruction = new HeightInstruction( mock( Unit.class ) );
instruction.computeHeight( mock( Bounds.class ), -1 );
}
@Test( expected = IllegalArgumentException.class )
public void testFailsWithZeroFontSize() {
HeightInstruction instruction = new HeightInstruction( mock( Unit.class ) );
instruction.computeHeight( mock( Bounds.class ), 0 );
}
@Test
public void testCalculatesHeightWithPixels() {
HeightInstruction instruction = new HeightInstruction( PassePartout.px( 23 ) );
int height = instruction.computeHeight( mock( Bounds.class ), 16 );
assertEquals( 23, height );
}
@Test
public void testCalculatesHeightWithEm() {
Em height = new Em( BigDecimal.valueOf( 1.5 ) );
HeightInstruction instruction = new HeightInstruction( height );
int actualHeight = instruction.computeHeight( mock( Bounds.class ), 100 );
assertEquals( 150, actualHeight );
}
@Test
public void testCalculatesHeightWithPercentage() {
HeightInstruction instruction = new HeightInstruction( new Percentage( BigDecimal.valueOf( 50 ) ) );
int height = instruction.computeHeight( new Bounds( 0, 0, 100, 100 ), 16 );
assertEquals( 50, height );
}
@Test
public void testCalculatesHeightWithPercentageAndZeroParentBounds() {
HeightInstruction instruction = new HeightInstruction( new Percentage( BigDecimal.valueOf( 50 ) ) );
int height = instruction.computeHeight( new Bounds( 0, 0, 0, 0 ), 16 );
assertEquals( 0, height );
}
@Test
public void testUsesDefaultHeightForUnsuportedBounds() {
HeightInstruction instruction = new HeightInstruction( mock( Unit.class ) );
int height = instruction.computeHeight( new Bounds( 0, 0, 100, 100 ), 16 );
assertEquals( 0, height );
}
}