added test for chase behavior

src/test/java/pacmanTests/GhostTest.java

@@ -53,4 +53,27 @@ class GhostTest {
 		// assert
 		//assertThat(position).isEqualTo(expectedPosition);
 	}
+
+	@Test
+	void Ghost_chase_chasesPlayer() {
+		// arrange
+		String[] mapTest = {		
+		"wwwww",	
+		"w...w",	
+		"wwwww"
+		};
+		GameManager gameManager = new GameManager();
+		gameManager.map = new Map(mapTest, gameManager);
+		
+		Vector2 expectedGhostPos = new Vector2(2, 1);
+		gameManager.player.position = new Vector2(1, 1);
+		gameManager.ghosts[0].position = new Vector2(3, 1);
+		// act
+
+		gameManager.ghosts[0].move();
+		Vector2 ghostPos = gameManager.ghosts[0].position;
+		
+		// assert
+		assertThat(ghostPos).isEqualTo(expectedGhostPos);
+	}
 }