Release v0.1.3 2026-07-11

src/game/progression/gear.test.ts

@@ -0,0 +1,51 @@
+import { describe, expect, it } from "vitest";
+import { createEncounterGearModifiers } from "./gearEffects";
+import {
+  GEAR_RECIPES,
+  canAffordGearUpgrade,
+  createDefaultGearProgress,
+  gearUpgradeCosts,
+  upgradeGearSlot,
+} from "./gear";
+import { bossCoinDrop, type MaterialStack } from "./loot";
+
+describe("IWT2-style gear progression", () => {
+  it("uses exact rank-one and rank-two boss coin costs", () => {
+    const rankOne = gearUpgradeCosts("priest", "weapon", 0);
+    const rankTwo = gearUpgradeCosts("priest", "weapon", 1);
+    expect(rankOne.map((cost) => cost.quantity)).toEqual([2]);
+    expect(rankTwo.map((cost) => cost.quantity)).toEqual([3, 1]);
+  });
+
+  it("preserves IWT2 Veteran coin parity for ranks six through ten", () => {
+    const recipe = GEAR_RECIPES.nia.weapon;
+    const costs = gearUpgradeCosts("nia", "weapon", 5);
+    expect(costs[0].itemId).toBe(bossCoinDrop(recipe.primaryBossId, "veteran").id);
+    expect(costs.map((cost) => cost.quantity)).toEqual([6, 5]);
+  });
+
+  it("spends all costs atomically and advances one rank", () => {
+    const progress = createDefaultGearProgress();
+    const costs = gearUpgradeCosts("brann", "weapon", 0);
+    const coin = bossCoinDrop(GEAR_RECIPES.brann.weapon.primaryBossId, "initiate");
+    const inventory: MaterialStack[] = [{ id: coin.id, name: coin.name, quantity: 3, rarity: coin.rarity, itemLevel: coin.itemLevel, glyph: coin.glyph }];
+    expect(canAffordGearUpgrade(inventory, costs)).toBe(true);
+    const result = upgradeGearSlot(progress, inventory, "brann", "weapon");
+    expect(result.gearProgress.brann.slots.weapon.level).toBe(1);
+    expect(result.inventory[0].quantity).toBe(1);
+    expect(progress.brann.slots.weapon.level).toBe(0);
+  });
+
+  it("projects rank bonuses without mutating saved progress", () => {
+    const progress = createDefaultGearProgress();
+    progress.priest.slots.weapon.level = 10;
+    progress.priest.slots.chest.level = 10;
+    progress.brann.slots.weapon.level = 10;
+    progress.brann.slots.helmet.level = 10;
+    const modifiers = createEncounterGearModifiers(progress, "priest");
+    expect(modifiers.aelia.healingPower).toBeCloseTo(1.4);
+    expect(modifiers.aelia.maxHealth).toBeCloseTo(1.4);
+    expect(modifiers.brann.damage).toBeCloseTo(1.4);
+    expect(modifiers.brann.stunDuration).toBeCloseTo(0.2);
+  });
+});