package shouty;

import org.junit.Test;
import static org.junit.Assert.assertEquals;

public class CoordinateTest {

    @Test
    public void it_calculates_the_distance_from_another_coordinate_along_x_axis() {
        Coordinate a = new Coordinate(0, 0);
        Coordinate b = new Coordinate(1000, 0);
        assertEquals(1000, a.distanceFrom(b));
    }
}

package shouty;

import org.junit.Test;
import static org.junit.Assert.assertEquals;

public class CoordinateTest {

    @Test
    public void itCalculatesTheDistanceFromAnotherCoordinateAlongXAxis() {
        Coordinate a = new Coordinate(0, 0);
        Coordinate b = new Coordinate(1000, 0);
        assertEquals(1000, a.distanceFrom(b));
    }
}

--- 
+++ 
@@ -6,7 +6,7 @@
 public class CoordinateTest {
 
     @Test
-    public void itCalculatesTheDistanceFromAnotherCoordinateAlongXAxis() {
+    public void it_calculates_the_distance_from_another_coordinate_along_x_axis() {
         Coordinate a = new Coordinate(0, 0);
         Coordinate b = new Coordinate(1000, 0);
         assertEquals(1000, a.distanceFrom(b));
Improve legibility of JUnit test
