Add oving3

src/test/java/oving3/NimTest.java

@@ -0,0 +1,81 @@
+package oving3;
+
+import static org.junit.jupiter.api.Assertions.assertEquals;
+import static org.junit.jupiter.api.Assertions.assertFalse;
+import static org.junit.jupiter.api.Assertions.assertThrows;
+import static org.junit.jupiter.api.Assertions.assertTrue;
+import org.junit.jupiter.api.BeforeEach;
+import org.junit.jupiter.api.DisplayName;
+import org.junit.jupiter.api.Test;
+
+public class NimTest {
+
+	private Nim nim;
+
+	private static boolean checkValidMove(Nim game, int pieces, boolean legal) {
+		return (legal == game.isValidMove(pieces, 0) && (legal == game.isValidMove(pieces, 1))
+				&& (legal == game.isValidMove(pieces, 2)));
+	}
+
+	@BeforeEach
+	public void setUp() {
+		nim = new Nim(5);
+	}
+
+	@Test
+	@DisplayName("Constructor")
+	public void testConstructor() {
+		assertEquals(5, nim.getPile(0));
+		assertEquals(5, nim.getPile(1));
+		assertEquals(5, nim.getPile(2));
+	}
+
+	@Test
+	@DisplayName("Remove pieces")
+	public void testRemovePieces() {
+		nim.removePieces(3, 0);
+		nim.removePieces(2, 1);
+		nim.removePieces(1, 2);
+		assertEquals(2, nim.getPile(0));
+		assertEquals(3, nim.getPile(1));
+		assertEquals(4, nim.getPile(2));
+
+		assertThrows(IllegalArgumentException.class, () -> {
+			nim.removePieces(-1, 0);
+		}, "Cannot remove negative number of pieces");
+
+		assertThrows(IllegalArgumentException.class, () -> {
+			nim.removePieces(0, 0);
+		}, "Cannot remove too few pieces");
+
+		assertThrows(IllegalArgumentException.class, () -> {
+			nim.removePieces(6, 0);
+		}, "Cannot remove too many pieces");
+	}
+
+	@Test
+	@DisplayName("Game over")
+	public void testGameOver() {
+		assertFalse(nim.isGameOver());
+
+		nim.removePieces(5, 0);
+		assertEquals(0, nim.getPile(0));
+		assertTrue(nim.isGameOver());
+
+		assertThrows(IllegalStateException.class, () -> {
+			nim.removePieces(5, 0);
+		}, "Cannot remove pieces when game is over");
+	}
+
+	@Test
+	@DisplayName("Valid moves")
+	public void testIsValidMove() {
+		assertTrue(NimTest.checkValidMove(nim, 2, true));
+		assertTrue(NimTest.checkValidMove(nim, -2, false));
+		assertTrue(NimTest.checkValidMove(nim, 0, false));
+		assertTrue(NimTest.checkValidMove(nim, 6, false));
+
+		nim.removePieces(5, 0);
+		assertTrue(NimTest.checkValidMove(nim, 2, false));
+	}
+}