Legger til tester for partikkelklassen

src/test/java/inf112/fiasko/roborally/objects/ParticleTest.java

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+package inf112.fiasko.roborally.objects;
+
+import inf112.fiasko.roborally.element_properties.Direction;
+import inf112.fiasko.roborally.element_properties.ParticleType;
+import inf112.fiasko.roborally.element_properties.TileType;
+import org.junit.Before;
+import org.junit.Test;
+
+import static org.junit.Assert.assertEquals;
+import static org.junit.Assert.assertNull;
+
+public class ParticleTest {
+    private Particle particle;
+    private Particle particle2;
+
+    @Before
+    public void setUp() {
+        particle = new Particle(ParticleType.LASER_BEAM_SINGLE, Direction.NORTH);
+        particle2 = new Particle(ParticleType.LASER_BEAM_DOUBLE_CROSS, Direction.EAST);
+    }
+
+    @Test
+    public void getParticleTypeFromParticle() {
+        assertEquals(ParticleType.LASER_BEAM_SINGLE, particle.getParticleType());
+    }
+
+    @Test
+    public void getParticleTypeFromParticle2() {
+        assertEquals(ParticleType.LASER_BEAM_DOUBLE_CROSS, particle2.getParticleType());
+    }
+
+
+    @Test
+    public void getDirectionFromParticle() {
+        assertEquals(Direction.NORTH, particle.getDirection());
+    }
+
+    @Test
+    public void getDirectionFromParticle2() {
+        assertEquals(Direction.EAST, particle2.getDirection());
+    }
+
+    @Test
+    public void invalidParticleTypeIDReturnsNull() {
+        assertNull(ParticleType.getParticleTypeFromID(-1));
+    }
+
+    @Test (expected = IllegalArgumentException.class)
+    public void invalidParticleDirectionThrowsError() {
+        new Particle(ParticleType.LASER_BEAM_DOUBLE, Direction.NORTH_EAST);
+    }
+}