refactor: improve testing setup

.eslintrc.cjs

@@ -29,5 +29,13 @@ module.exports = {
                 "@typescript-eslint/no-var-requires": "off",
             },
         },
+        {
+            files: ["./spec/**/*"],
+            env: {
+                browser: false,
+            },
+            extends: ["plugin:jest/recommended"],
+            plugins: ["jest"],
+        },
     ],
 };

jest.config.js

@@ -2,11 +2,15 @@
 //
 // SPDX-License-Identifier: MIT
 
-export default {
+/** @type {import('ts-jest/dist/types').InitialOptionsTsJest} */
+const config = {
     preset: "ts-jest",
     globals: {
         "ts-jest": {
-            tsconfig: "<rootDir>/spec/tsconfig.spec.json",
+            tsconfig: "<rootDir>/spec/tsconfig.json",
         },
     },
+    setupFiles: ["<rootDir>/spec/setup.ts"],
 };
+
+export default config;

spec/localization/localization.spec.ts

@@ -2,14 +2,10 @@
 //
 // SPDX-License-Identifier: MIT
 
-import * as fs from "fs-extra";
+import en from "../../lang/en.json";
-import * as path from "path";
+import de from "../../lang/de.json";
 
 describe("English and german localization files", () => {
-    const localizationPath = "./lang/";
-    const en: Record<string, unknown> = fs.readJSONSync(path.join(localizationPath, "en.json"));
-    const de: Record<string, unknown> = fs.readJSONSync(path.join(localizationPath, "de.json"));
-
     it("should have the same keys.", () => {
         const deKeys = Object.keys(de);
         const enKeys = Object.keys(en);

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.");
     });
 });
 

spec/setup.ts

@@ -0,0 +1,27 @@
+// SPDX-FileCopyrightText: 2022 Johannes Loher
+//
+// SPDX-License-Identifier: MIT
+
+import en from "../lang/en.json";
+
+function setupStubs() {
+    class StubGame {
+        constructor() {
+            this.i18n = {
+                localize: (key: string) => (key in en ? en[key as keyof typeof en] : key),
+            };
+        }
+        i18n: {
+            localize: (key: string) => string;
+        };
+    }
+
+    const game = new StubGame();
+
+    Object.defineProperties(globalThis, {
+        game: { value: game },
+        Game: { value: StubGame },
+    });
+}
+
+setupStubs();

tsconfig.json

@@ -7,7 +7,8 @@
         "moduleResolution": "node",
         "forceConsistentCasingInFileNames": true,
         "strict": true,
-        "noUncheckedIndexedAccess": true
+        "noUncheckedIndexedAccess": true,
+        "resolveJsonModule": true
     },
     "include": ["src"]
 }