Add unit tests for LoyaltyCard class

app/src/main/java/protect/card_locker/LoyaltyCard.java

@@ -203,4 +203,4 @@ public LoyaltyCard[] newArray(int size) {
             return new LoyaltyCard[size];
         }
     };
-}
+}

app/src/test/java/protect/card_locker/LoyaltyCardTest.java

@@ -0,0 +1,94 @@
+package protect.card_locker;
+
+import android.os.Parcel;
+
+import org.junit.Test;
+import org.junit.runner.RunWith;
+import org.robolectric.RobolectricTestRunner;
+
+import java.math.BigDecimal;
+import java.util.Currency;
+import java.util.Date;
+
+import com.google.zxing.BarcodeFormat;
+
+import static org.junit.Assert.*;
+
+@RunWith(RobolectricTestRunner.class)
+public class LoyaltyCardTest {
+
+    @Test
+    public void testParcelable() {
+        Date validFrom = new Date();
+        Date expiry = new Date();
+        BigDecimal balance = new BigDecimal("100.00");
+        Currency currency = Currency.getInstance("USD");
+        LoyaltyCard card = new LoyaltyCard(1, "Store A", "Note A", validFrom, expiry, balance, currency, "12345", "67890", CatimaBarcode.fromBarcode(BarcodeFormat.QR_CODE), 0xFF0000, 1, System.currentTimeMillis(), 10, 0);
+
+        Parcel parcel = Parcel.obtain();
+        card.writeToParcel(parcel, card.describeContents());
+
+        parcel.setDataPosition(0);
+
+        LoyaltyCard createdFromParcel = LoyaltyCard.CREATOR.createFromParcel(parcel);
+
+        assertEquals(card.id, createdFromParcel.id);
+        assertEquals(card.store, createdFromParcel.store);
+        assertEquals(card.note, createdFromParcel.note);
+        assertEquals(card.validFrom, createdFromParcel.validFrom);
+        assertEquals(card.expiry, createdFromParcel.expiry);
+        assertEquals(card.balance, createdFromParcel.balance);
+        assertEquals(card.balanceType, createdFromParcel.balanceType);
+        assertEquals(card.cardId, createdFromParcel.cardId);
+        assertEquals(card.barcodeId, createdFromParcel.barcodeId);
+        assertEquals(card.barcodeType.name(), createdFromParcel.barcodeType.name());
+        assertEquals(card.headerColor, createdFromParcel.headerColor);
+        assertEquals(card.starStatus, createdFromParcel.starStatus);
+        assertEquals(card.lastUsed, createdFromParcel.lastUsed);
+        assertEquals(card.zoomLevel, createdFromParcel.zoomLevel);
+        assertEquals(card.archiveStatus, createdFromParcel.archiveStatus);
+
+        parcel.recycle();
+    }
+
+    @Test
+    public void testIsDuplicate_sameObject() {
+        Date now = new Date();
+        BigDecimal balance = new BigDecimal("50.00");
+        Currency currency = Currency.getInstance("EUR");
+        LoyaltyCard card1 = new LoyaltyCard(1, "Store B", "Note B", now, now, balance, currency, "22222", "33333", CatimaBarcode.fromBarcode(BarcodeFormat.PDF_417), 0x00FF00, 1, System.currentTimeMillis(), 5, 1);
+
+        assertTrue(LoyaltyCard.isDuplicate(card1, card1));
+    }
+
+    @Test
+    public void testIsDuplicate_differentObjects() {
+        Date now = new Date();
+        BigDecimal balance1 = new BigDecimal("50.00");
+        BigDecimal balance2 = new BigDecimal("75.00");
+        Currency currency = Currency.getInstance("EUR");
+        LoyaltyCard card1 = new LoyaltyCard(2, "Store C", "Note C", now, now, balance1, currency, "44444", "55555", CatimaBarcode.fromBarcode(BarcodeFormat.DATA_MATRIX), 0x0000FF, 0, System.currentTimeMillis(), 15, 1);
+        LoyaltyCard card2 = new LoyaltyCard(2, "Store C", "Note C", now, now, balance2, currency, "44444", "55555", CatimaBarcode.fromBarcode(BarcodeFormat.DATA_MATRIX), 0x0000FF, 0, System.currentTimeMillis(), 15, 1);
+
+        assertFalse(LoyaltyCard.isDuplicate(card1, card2));
+    }
+
+    @Test
+    public void testToString() {
+        Date now = new Date();
+        BigDecimal balance = new BigDecimal("100.00");
+        Currency currency = Currency.getInstance("USD");
+        LoyaltyCard card = new LoyaltyCard(3, "Store D", "Note D", now, now, balance, currency, "66666", "77777", CatimaBarcode.fromBarcode(BarcodeFormat.AZTEC), null, 2, System.currentTimeMillis(), 20, 2);
+
+        String expected = String.format(
+                "LoyaltyCard{%n  id=%s,%n  store=%s,%n  note=%s,%n  validFrom=%s,%n  expiry=%s,%n"
+                        + "  balance=%s,%n  balanceType=%s,%n  cardId=%s,%n  barcodeId=%s,%n  barcodeType=%s,%n"
+                        + "  headerColor=%s,%n  starStatus=%s,%n  lastUsed=%s,%n  zoomLevel=%s,%n  archiveStatus=%s%n}",
+                card.id, card.store, card.note, card.validFrom, card.expiry,
+                card.balance, card.balanceType, card.cardId, card.barcodeId,
+                card.barcodeType != null ? card.barcodeType.format() : null,
+                card.headerColor, card.starStatus, card.lastUsed, card.zoomLevel, card.archiveStatus);
+
+        assertEquals(expected, card.toString());
+    }
+}