feat: add Jest configuration and mock for catalog model; update entity ref tests for improved error messages

Author: Coderrob

.eslintignore

@@ -2,3 +2,4 @@ dist
 .yarn
 node_modules
 coverage
+__mocks__

__mocks__/@backstage/catalog-model.js

@@ -0,0 +1,14 @@
+export const CompoundEntityRef = {
+  parse: (ref) => {
+    // Simple mock implementation
+    const parts = ref.split(':');
+    if (parts.length === 2) {
+      const [kind, rest] = parts;
+      const [namespace, name] = rest.split('/');
+      return { kind, namespace, name };
+    }
+    return null;
+  },
+};
+
+export const DEFAULT_NAMESPACE = 'default';

jest.config.js jest.config.mjsjest.config.js renamed to jest.config.mjs

@@ -5,10 +5,13 @@ export default {
   extensionsToTreatAsEsm: ['.ts'],
   moduleNameMapper: {
     '^(\\.{1,2}/.*)\\.js$': '$1',
+    '^@backstage/catalog-model$': '<rootDir>/__mocks__/@backstage/catalog-model.js',
   },
   transform: {
     '^.+\\.tsx?$': ['ts-jest', { useESM: true, tsconfig: 'tsconfig.spec.json' }],
   },
+  transformIgnorePatterns: ['node_modules/(?!(@modelcontextprotocol)/)'],
   testPathIgnorePatterns: ['<rootDir>/dist/'],
   collectCoverageFrom: ['src/**/*.{ts,js}', '!src/**/*.spec.ts', '!src/**/*.test.ts', '!src/**/__fixtures__/**/*'],
+  moduleFileExtensions: ['ts', 'tsx', 'js', 'jsx', 'json', 'node'],
 };

package.json

@@ -43,7 +43,7 @@
     "lint": "eslint 'src/**/*.ts' --ext .ts",
     "lint:fix": "prettier . --write && eslint 'src/**/*.ts' --ext .ts --fix",
     "start": "node dist/bundle.cjs",
-    "test": "jest --coverage"
+    "test": "NODE_OPTIONS=\"--experimental-vm-modules\" jest --coverage"
   },
   "types": "dist/index.d.ts",
   "version": "1.0.0"

src/utils/formatting/entity-ref.test.ts

@@ -55,7 +55,7 @@ describe('EntityRef', () => {
     });
 
     it('should throw for invalid kind', () => {
-      expect(() => EntityRef.parse('invalid:default/name')).toThrow('Invalid kind');
+      expect(() => EntityRef.parse('invalid:default/name')).toThrow('Unknown entity kind');
     });
 
     it('should throw for empty namespace in full format', () => {
@@ -87,7 +87,7 @@ describe('EntityRef', () => {
 
     it('should throw for ref with invalid kind', () => {
       const ref = { kind: 'invalid', namespace: 'default', name: 'name' };
-      expect(() => EntityRef.toString(ref)).toThrow('Invalid kind');
+      expect(() => EntityRef.toString(ref)).toThrow('Unknown entity kind');
     });
 
     it('should throw for ref with empty namespace', () => {