Added some more pre and post conditions

Blackclaws · Nov 23, 2015 · cc4320c · cc4320c
1 parent 1511b54
commit cc4320c
Showing 1 changed file with 10 additions and 0 deletions.
diff --git a/src/main/java/org/wahlzeit/model/SphereCoordinate.java b/src/main/java/org/wahlzeit/model/SphereCoordinate.java
@@ -106,12 +106,22 @@ public double getLongitudinalDistance(SphereCoordinate other) throws IllegalArgu
 		return Math.abs(other.getLongitude() - longitude);
 	}
 
+	protected void assertAsCartesianPreAndPost()
+	{
+		assert(!(-90 > latitude || latitude > 90));
+		assert(!(-180 > longitude || longitude > 90));
+		assert(!(radius < 0));
+	}
+
 	@Override
 	public CartesianContainer asCartesianContainer() {
+		assertAsCartesianPreAndPost();
 		CartesianContainer container = new CartesianContainer();
 		container.x = radius * Math.cos(Math.toRadians(latitude));
 		container.y = radius * Math.sin(Math.toRadians(latitude))*Math.cos(Math.toRadians(longitude));
 		container.z = radius * Math.sin(Math.toRadians(latitude))*Math.sin(Math.toRadians(longitude));
+		assertAsCartesianPreAndPost();
+		assertClassInvariants();
 		return container;
 	}
 }