refactor: improve testing setup

spec/rolls/check-evaluation.spec.ts

@@ -5,39 +5,21 @@
 
 import evaluateCheck from "../../src/rolls/check-evaluation";
 
-class StubGame {
-    constructor() {
-        this.i18n = {
-            localize: (key: string) => key,
-        };
-    }
-    i18n: {
-        localize: (key: string) => string;
-    };
-}
-
-const game = new StubGame();
-
-Object.defineProperties(globalThis, {
-    game: { value: game },
-    Game: { value: StubGame },
-});
-
 describe("evaluateCheck with no dice", () => {
     it("should throw an error.", () => {
-        expect(() => evaluateCheck([], 10)).toThrow("DS4.ErrorInvalidNumberOfDice");
+        expect(() => evaluateCheck([], 10)).toThrow("Invalid number of dice.");
     });
 });
 
 describe("evaluateCheck with more dice than required by the checkTargetNumber", () => {
     it("should throw an error.", () => {
-        expect(() => evaluateCheck([10, 10], 10)).toThrow("DS4.ErrorInvalidNumberOfDice");
+        expect(() => evaluateCheck([10, 10], 10)).toThrow("Invalid number of dice.");
     });
 });
 
 describe("evaluateCheck with less dice than required by the checkTargetNumber", () => {
     it("should throw an error.", () => {
-        expect(() => evaluateCheck([10], 21)).toThrow("DS4.ErrorInvalidNumberOfDice");
+        expect(() => evaluateCheck([10], 21)).toThrow("Invalid number of dice.");
     });
 });