AirfoilTableTest.java

package uk.co.flyingsquirrels.aero;

import static org.hamcrest.MatcherAssert.assertThat;
import static org.hamcrest.Matchers.closeTo;
import static org.hamcrest.Matchers.equalTo;

import org.junit.Test;


public class AirfoilTableTest {

	private final AirfoilTable airfoil = new AirfoilTable("63018");
	
	@Test
	public void getName() {
		assertThat(airfoil.getName(), equalTo("NACA 63-018"));
	}

	@Test
	public void getReynolds() {
		assertThat(airfoil.getReynolds(), equalTo(2000000l));
	}
	
	@Test
	public void getDataLength() {
		assertThat(airfoil.getDataLength(), equalTo(361));
	}
	
	@Test
	public void getAlpha() {
		double[] data = airfoil.getAlpha();
		assertThat(data[0], closeTo(-3.1415, 0.0001));
		assertThat(data[1], closeTo(-3.1241, 0.0001));
		assertThat(data[2], closeTo(-3.1067, 0.0001));
		assertThat(data[data.length-2], closeTo(3.1241, 0.0001));
		assertThat(data[data.length-1], closeTo(3.1415, 0.0001));
	}
	
	@Test
	public void getCl() {
		double[] data = airfoil.getCl();
		assertThat(data[0], equalTo(0.000));
		assertThat(data[1], equalTo(-0.111));
		assertThat(data[2], equalTo(-0.221));
		assertThat(data[data.length-2], equalTo(0.111));
		assertThat(data[data.length-1], equalTo(0.000));
	}
	
	@Test
	public void getCd() {
		double[] data = airfoil.getCd();
		assertThat(data[0], equalTo(0.00598));
		assertThat(data[1], equalTo(0.00594));
		assertThat(data[2], equalTo(0.00656));
		assertThat(data[data.length-2], equalTo(0.00594));
		assertThat(data[data.length-1], equalTo(0.00598));
	}

	@Test
	public void getCm() {
		double[] data = airfoil.getCm();
		assertThat(data[0], equalTo(-0.000));
		assertThat(data[1], equalTo(-0.002));
		assertThat(data[2], equalTo(-0.004));
		assertThat(data[data.length-2], equalTo(0.002));
		assertThat(data[data.length-1], equalTo(-0.000));
	}
	
}