package org.geotools.coverage.io.range.impl;

import javax.measure.Measure;
import javax.measure.unit.Unit;

import junit.framework.Assert;

import org.geotools.coverage.io.impl.range.BandIndexMeasure;
import org.geotools.coverage.io.impl.range.DimensionlessAxis;
import org.geotools.coverage.io.range.Axis;
import org.geotools.feature.NameImpl;
import org.geotools.util.SimpleInternationalString;
import org.junit.Test;

public class DimensionlessAxisTest extends Assert {

	/**
	 * Toy Axis consisting of three bands named A, B and C.
	 * <p>
	 * This really is a toy example; if you have a formal
	 * fixed data dictionary consider the use of a Java Enumeration
	 * (and EnumMeasure), if you have an open ended data dictionary
	 * consider a CodeList (and CodeMeasure).
	 */
	@Test
	public void testTOY(){
		DimensionlessAxis TOY = new DimensionlessAxis(
				new String[]{"A","B","C"},
				new NameImpl("Color"),
				new SimpleInternationalString("Toy Example"));		
		
		assertEquals( Unit.ONE, TOY.getUnitOfMeasure() );
		BandIndexMeasure key = TOY.getKey(0);
		assertEquals( "A", key.getValue() );		
		assertNull( TOY.getCoordinateReferenceSystem() );
	}
	
	/**
	 * Depth represented as an axis of one band
	 */
	@Test
	public void testElevation(){
		DimensionlessAxis HEIGHT = new DimensionlessAxis(1, new NameImpl("height"), new SimpleInternationalString("Height from sealevel"));
		assertEquals( Unit.ONE, HEIGHT.getUnitOfMeasure() );
		BandIndexMeasure key = HEIGHT.getKey(0);
		assertEquals( "0", key.getValue() );
		
		// Make sure we can discover everything we need via the Axis API
		Axis axis = HEIGHT; 
		assertEquals( Unit.ONE, axis.getUnitOfMeasure() );
		Measure measure = axis.getKey(0);
		assertEquals( Unit.ONE, measure.getUnit() );
		assertEquals( "0", key.getValue() );
	}

}