Integration tests

Makefile

@@ -21,3 +21,6 @@ start-apollo-server-dev:
 
 start-apollo-server-types-check:
 	docker-compose run --rm --service-ports apollo-server-dev npm run types:check
+
+start-apollo-server-test:
+	docker-compose run --rm --service-ports apollo-server-dev npm run test

server/.dockerignore

@@ -2,6 +2,9 @@
 !src/
 !.nvmrc
 !.prettierrc.json
+!jest-mjs-resolver.ts
+!jest.config.ts
 !package.json
 !package-lock.json
-!tsconfig.json
+!tsconfig.json
+!tsconfig.build.json

server/jest-mjs-resolver.ts

@@ -0,0 +1,18 @@
+// @ts-nocheck
+
+const mjsResolver = (path, options) => {
+  const mjsExtRegex = /\.mjs$/i;
+  const resolver = options.defaultResolver;
+
+  if (mjsExtRegex.test(path)) {
+    try {
+      return resolver(path.replace(mjsExtRegex, '.mts'), options);
+    } catch {
+      // use default resolver
+    }
+  }
+
+  return resolver(path, options);
+};
+
+module.exports = mjsResolver;

server/jest.config.ts

@@ -0,0 +1,18 @@
+import type { InitialOptionsTsJest } from 'ts-jest';
+
+const configuration: InitialOptionsTsJest = {
+  extensionsToTreatAsEsm: ['.ts', '.mts'],
+  moduleFileExtensions: ['js', 'ts', 'tsx', 'mts'],
+  resolver: '<rootDir>/jest-mjs-resolver.ts',
+  testMatch: ['**/*.spec.mts'],
+  transform: {
+    '^.+\\.m?tsx?$': [
+      'ts-jest',
+      {
+        useESM: true,
+      },
+    ],
+  },
+};
+
+export default configuration;