add tests infrastructure

broker/jest.config.js

@@ -0,0 +1,13 @@
+/** @type {import('ts-jest').JestConfigWithTsJest} **/
+module.exports = {
+  testEnvironment: "node",
+  transform: {
+    "^.+.tsx?$": ["ts-jest",{}],
+  },
+  moduleNameMapper: {
+    '@services/(.*)': '<rootDir>/../shared/services/$1',
+    '@data/(.*)': '<rootDir>/../shared/data/$1',
+    '@functions/(.*)': '<rootDir>/../shared/functions/$1',
+    '@schema/(.*)': '<rootDir>/../shared/schema/$1',
+  }
+};