refactor test for readability

This commit is contained in:
kiwioyster 2023-06-22 11:36:15 +12:00
parent 4dd9a7c3b2
commit b2205f03db

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@ -1,13 +1,22 @@
import { Item, GildedRose } from "@/gilded-rose"; import { Item, GildedRose } from "@/gilded-rose";
const generalItem = (sellIn: number, quality: number) =>
new Item("foo", sellIn, quality);
const ageableItem = (sellIn: number, quality: number) =>
new Item("Aged Brie", sellIn, quality);
const legendaryItem = (sellIn: number, quality: number) =>
new Item("Sulfuras, Hand of Ragnaros", sellIn, quality);
const backstagePassItem = (sellIn: number, quality: number) =>
new Item("Backstage passes to a TAFKAL80ETC concert", sellIn, quality);
describe("Gilded Rose", () => { describe("Gilded Rose", () => {
it("should degrade quality", () => { it("should degrade quality", () => {
const gildedRose = new GildedRose([new Item("foo", 1, 1)]); const gildedRose = new GildedRose([generalItem(1, 1)]);
const items = gildedRose.updateQuality(); const items = gildedRose.updateQuality();
expect(items[0].quality).toBe(0); expect(items[0].quality).toBe(0);
}); });
it("should tick down sell in", () => { it("should tick down sell in", () => {
const gildedRose = new GildedRose([new Item("foo", 1, 1)]); const gildedRose = new GildedRose([generalItem(1, 1)]);
const items = gildedRose.updateQuality(); const items = gildedRose.updateQuality();
expect(items[0].sellIn).toBe(0); expect(items[0].sellIn).toBe(0);
}); });
@ -26,72 +35,62 @@ describe("Gilded Rose", () => {
expect(items[1].sellIn).toBe(1); expect(items[1].sellIn).toBe(1);
}); });
it("should degrade twice as fast past sell in date", () => { it("should degrade twice as fast past sell in date", () => {
const gildedRose = new GildedRose([new Item("foo", 0, 3)]); const gildedRose = new GildedRose([generalItem(0, 3)]);
const items = gildedRose.updateQuality(); const items = gildedRose.updateQuality();
expect(items[0].sellIn).toBe(-1); expect(items[0].sellIn).toBe(-1);
expect(items[0].quality).toBe(1); expect(items[0].quality).toBe(1);
}); });
it("should not have negative quality for expired items", () => { it("should not have negative quality for expired items", () => {
const gildedRose = new GildedRose([new Item("foo", 0, 0)]); const gildedRose = new GildedRose([generalItem(0, 0)]);
const items = gildedRose.updateQuality(); const items = gildedRose.updateQuality();
expect(items[0].sellIn).toBe(-1); expect(items[0].sellIn).toBe(-1);
expect(items[0].quality).toBe(0); expect(items[0].quality).toBe(0);
}); });
it("should not have negative quality for non expired items", () => { it("should not have negative quality for non expired items", () => {
const gildedRose = new GildedRose([new Item("foo", 1, 0)]); const gildedRose = new GildedRose([generalItem(1, 0)]);
const items = gildedRose.updateQuality(); const items = gildedRose.updateQuality();
expect(items[0].sellIn).toBe(0); expect(items[0].sellIn).toBe(0);
expect(items[0].quality).toBe(0); expect(items[0].quality).toBe(0);
}); });
it("should tick up quality for Aged Brie", () => { it("should tick up quality for Aged Brie", () => {
const gildedRose = new GildedRose([new Item("Aged Brie", 1, 0)]); const gildedRose = new GildedRose([ageableItem(1, 0)]);
const items = gildedRose.updateQuality(); const items = gildedRose.updateQuality();
expect(items[0].sellIn).toBe(0); expect(items[0].sellIn).toBe(0);
expect(items[0].quality).toBe(1); expect(items[0].quality).toBe(1);
}); });
it("should not exceed a quality of 50", () => { it("should not exceed a quality of 50", () => {
const gildedRose = new GildedRose([new Item("Aged Brie", 1, 50)]); const gildedRose = new GildedRose([ageableItem(1, 50)]);
const items = gildedRose.updateQuality(); const items = gildedRose.updateQuality();
expect(items[0].sellIn).toBe(0); expect(items[0].sellIn).toBe(0);
expect(items[0].quality).toBe(50); expect(items[0].quality).toBe(50);
}); });
it("should not tick down sell in or quality if the item is Sulfuras", () => { it("should not tick down sell in or quality if the item is Sulfuras", () => {
const gildedRose = new GildedRose([ const gildedRose = new GildedRose([legendaryItem(1, 2)]);
new Item("Sulfuras, Hand of Ragnaros", 1, 2),
]);
const items = gildedRose.updateQuality(); const items = gildedRose.updateQuality();
expect(items[0].sellIn).toBe(1); expect(items[0].sellIn).toBe(1);
expect(items[0].quality).toBe(2); expect(items[0].quality).toBe(2);
}); });
describe("backstage pass", () => { describe("backstage pass", () => {
it("should tick up quality with more than 10 days of sell in", () => { it("should tick up quality with more than 10 days of sell in", () => {
const gildedRose = new GildedRose([ const gildedRose = new GildedRose([backstagePassItem(11, 2)]);
new Item("Backstage passes to a TAFKAL80ETC concert", 11, 2),
]);
const items = gildedRose.updateQuality(); const items = gildedRose.updateQuality();
expect(items[0].sellIn).toBe(10); expect(items[0].sellIn).toBe(10);
expect(items[0].quality).toBe(3); expect(items[0].quality).toBe(3);
}); });
it("should tick up quality twice with less than 10 days of sell in", () => { it("should tick up quality twice with less than 10 days of sell in", () => {
const gildedRose = new GildedRose([ const gildedRose = new GildedRose([backstagePassItem(10, 2)]);
new Item("Backstage passes to a TAFKAL80ETC concert", 10, 2),
]);
const items = gildedRose.updateQuality(); const items = gildedRose.updateQuality();
expect(items[0].sellIn).toBe(9); expect(items[0].sellIn).toBe(9);
expect(items[0].quality).toBe(4); expect(items[0].quality).toBe(4);
}); });
it("should tick up quality thrice with less than 5 days of sell in", () => { it("should tick up quality thrice with less than 5 days of sell in", () => {
const gildedRose = new GildedRose([ const gildedRose = new GildedRose([backstagePassItem(5, 2)]);
new Item("Backstage passes to a TAFKAL80ETC concert", 5, 2),
]);
const items = gildedRose.updateQuality(); const items = gildedRose.updateQuality();
expect(items[0].sellIn).toBe(4); expect(items[0].sellIn).toBe(4);
expect(items[0].quality).toBe(5); expect(items[0].quality).toBe(5);
}); });
it("should have 0 quality when sell in date has passed", () => { it("should have 0 quality when sell in date has passed", () => {
const gildedRose = new GildedRose([ const gildedRose = new GildedRose([backstagePassItem(0, 2)]);
new Item("Backstage passes to a TAFKAL80ETC concert", 0, 2),
]);
const items = gildedRose.updateQuality(); const items = gildedRose.updateQuality();
expect(items[0].sellIn).toBe(-1); expect(items[0].sellIn).toBe(-1);
expect(items[0].quality).toBe(0); expect(items[0].quality).toBe(0);