add test, and fix script

jest.config.js

@@ -0,0 +1,27 @@
+module.exports = {
+  preset: 'ts-jest',
+  testEnvironment: 'node',
+  roots: ['<rootDir>/src'],
+  testMatch: ['**/__tests__/**/*.spec.ts', '**/__tests__/**/*.test.ts'],
+  transform: {
+    '^.+\\.ts$': ['ts-jest', {
+      diagnostics: {
+        ignoreCodes: [151002],
+      },
+    }],
+  },
+  collectCoverageFrom: [
+    'src/**/*.ts',
+    '!src/**/*.d.ts',
+    '!src/app.ts',
+    '!src/database/**',
+    '!src/__tests__/**',
+  ],
+  coverageDirectory: 'coverage',
+  moduleNameMapper: {
+    '^@/(.*)$': '<rootDir>/src/$1',
+  },
+  setupFilesAfterEnv: ['<rootDir>/src/__tests__/setup.ts'],
+  testTimeout: 10000,
+  moduleFileExtensions: ['ts', 'tsx', 'js', 'jsx', 'json', 'node'],
+};