test(xpsys): unit test cosmetic xp assigment

libs/xp-systems/src/xp-system.class.spec.ts

@@ -7,27 +7,59 @@ describe('XpSystemsService', () => {
     expect(service).toBeDefined();
   });
 
-  describe('getCosmeticXpInLevel', () => {
-    it('should handle 0', () => {
-      const xp = service.getCosmeticXpInLevel(0);
-      expect(xp).toEqual(0);
-    });
+  it('should calculate correct level assignments for original constants', () => {
+    // These constants may get changed in the future, we also care about the maths,
+    // so mock here and check values correspond to below sheet
+    // https://docs.google.com/spreadsheets/d/1JiHJYsxlGPXAZqCPh7-paJI6U_TH-Ro0H0OWDFCiA74
 
-    it('should handle greater than 0', () => {
-      const xp = service.getCosmeticXpInLevel(1);
-      expect(xp).toBeGreaterThan(0);
+    // Note, this is NOT quite what the linked spreadsheet produces.
+    // At level 101, the sheet expects xpInLevel from 101 to be
+    // 152000 - it must factor in `startingValue` for some reason.  In code,
+    // `startingValue` isn't used at all for levels greater than
+    // `staticScaleStart`. Not really an issue, but worth being aware of.
+    jest.replaceProperty(service, 'cosXpParams', {
+      levels: {
+        maxLevels: 500,
+        startingValue: 20000,
+        linearScaleBaseIncrease: 1000,
+        linearScaleInterval: 10,
+        linearScaleIntervalMultiplier: 1,
+        staticScaleStart: 101,
+        staticScaleBaseMultiplier: 1.5,
+        staticScaleInterval: 25,
+        staticScaleIntervalMultiplier: 0.5
+      },
+      completions: {
+        unique: { tierScale: { linear: 2500, staged: 2500 } },
+        repeat: {
+          tierScale: { linear: 20, staged: 40, stages: 5, bonus: 40 }
+        }
+      }
     });
-  });
 
-  describe('getCosmeticXpForLevel', () => {
-    it('should handle 0', () => {
-      const xp = service.getCosmeticXpForLevel(0);
-      expect(xp).toEqual(0);
-    });
-
-    it('should handle greater than 0', () => {
-      const xp = service.getCosmeticXpForLevel(1);
-      expect(xp).toBeGreaterThan(0);
-    });
+    for (const [level, xpInLevel, total] of [
+      [1, 21000, 21000],
+      [2, 22000, 43000],
+      [3, 23000, 66000],
+      [4, 24000, 90000],
+      [5, 25000, 115000],
+      [6, 26000, 141000],
+      [7, 27000, 168000],
+      [8, 28000, 196000],
+      [9, 29000, 225000],
+      [10, 30000, 255000],
+      [11, 42000, 297000],
+      [97, 990000, 34995000],
+      [98, 1000000, 35995000],
+      [99, 1010000, 37005000],
+      [100, 1020000, 38025000],
+      [101, 1500000, 39525000],
+      [102, 1500000, 41025000],
+      [103, 1500000, 42525000],
+      [104, 1500000, 44025000]
+    ]) {
+      expect(service.getCosmeticXpInLevel(level)).toBe(xpInLevel);
+      expect(service.getCosmeticXpForLevel(level)).toBe(total);
+    }
   });
 });