"Backstage passes": Quality drops to 0 after the concert

Java/src/test/java/com/gildedrose/GildedRoseBackstageTest.java

@@ -0,0 +1,33 @@
+package com.gildedrose;
+
+import io.qameta.allure.Feature;
+import io.qameta.allure.Story;
+import org.junit.jupiter.params.ParameterizedTest;
+import org.junit.jupiter.params.provider.ValueSource;
+
+import static com.gildedrose.TestHelper.assertItem;
+import static com.gildedrose.TestHelper.prepareApp;
+
+
+@Story("\"Backstage passes\", like aged brie, increases in Quality as its SellIn value approaches;\n" +
+        "\tQuality increases by 2 when there are 10 days or less and by 3 when there are 5 days or less but\n" +
+        "\tQuality drops to 0 after the concert")
+class GildedRoseBackstageTest {
+
+    private static final String ITEM_NAME = "Backstage passes to a TAFKAL80ETC concert";
+
+    @Feature("Quality drops to 0 after the concert")
+    @ParameterizedTest(name = "sellIn: {arguments}")
+    @ValueSource(ints = {0, -1})
+    void shouldDropQualityToZeroAfterTheConcert(int sellIn) {
+        // given
+        GildedRose app = prepareApp(new Item(ITEM_NAME, sellIn, 10));
+
+        // when
+        app.updateQuality();
+
+        // then
+        final Item item = app.items[0];
+        assertItem(item, ITEM_NAME, sellIn - 1, 0);
+    }
+}