diff --git a/app/game-api/tsconfig.json b/app/game-api/tsconfig.json
index cdab0d8..f931842 100644
--- a/app/game-api/tsconfig.json
+++ b/app/game-api/tsconfig.json
@@ -3,7 +3,6 @@
     "compilerOptions": {
         "outDir": "dist",
         "composite": true,
-        "rootDir": "src",
         "baseUrl": ".",
         "paths": {
             "@sammo-ts/common": [
@@ -27,7 +26,8 @@
         }
     },
     "include": [
-        "src"
+        "src",
+        "test"
     ],
     "references": [
         {
diff --git a/app/game-engine/tsconfig.json b/app/game-engine/tsconfig.json
index 9e979cd..c475888 100644
--- a/app/game-engine/tsconfig.json
+++ b/app/game-engine/tsconfig.json
@@ -3,10 +3,10 @@
     "compilerOptions": {
         "outDir": "dist",
         "composite": true,
-        "rootDir": "src"
     },
     "include": [
-        "src"
+        "src",
+        "test"
     ],
     "references": [
         {
diff --git a/app/gateway-api/tsconfig.json b/app/gateway-api/tsconfig.json
index 46edbbd..d890170 100644
--- a/app/gateway-api/tsconfig.json
+++ b/app/gateway-api/tsconfig.json
@@ -3,10 +3,10 @@
     "compilerOptions": {
         "outDir": "dist",
         "composite": true,
-        "rootDir": "src"
     },
     "include": [
-        "src"
+        "src",
+        "test"
     ],
     "references": [
         {
diff --git a/docs/testing-policy.md b/docs/testing-policy.md
index acd8398..62d3b5e 100644
--- a/docs/testing-policy.md
+++ b/docs/testing-policy.md
@@ -55,6 +55,10 @@ Goal: ensure scenario parsing and DB application are correct.
 - Unit tests: fast, wide coverage.
 - Integration tests: focus on real DB/Redis behavior.
 - Smoke tests: minimal coverage of turn flow/build/scenario loading.
+- Test-specific Rule Relaxations:
+    - To simplify mocking and complex state preparation, the use of `any` type is allowed in test files.
+    - Type casting tricks like `as unknown as YourType` are also permitted in test code for convenience.
+    - However, test code must still be covered by TypeScript type checking to ensure API consistency and prevent regressions.
 
 ## MockDB Conclusion
 
diff --git a/eslint.config.js b/eslint.config.js
index bac1491..60c1c95 100644
--- a/eslint.config.js
+++ b/eslint.config.js
@@ -76,6 +76,12 @@ export default tseslint.config(
             '@typescript-eslint/no-empty-object-type': 'off',
         },
     },
+    {
+        files: ['**/test/**/*.ts', '**/*.test.ts', '**/*.spec.ts'],
+        rules: {
+            '@typescript-eslint/no-explicit-any': 'off',
+        },
+    },
     {
         files: ['**/*.js', '**/*.mjs', '**/*.cjs'],
         rules: {
diff --git a/packages/logic/tsconfig.json b/packages/logic/tsconfig.json
index 7aceea6..cb2ecb9 100644
--- a/packages/logic/tsconfig.json
+++ b/packages/logic/tsconfig.json
@@ -19,10 +19,10 @@
         "useUnknownInCatchVariables": true,
         "noUnusedLocals": true,
         "noUnusedParameters": true,
-        "rootDir": "src"
     },
     "include": [
-        "src"
+        "src",
+        "test"
     ],
     "references": [
         {