feat: added more tests

Author: jeffrey-baker-vg

packages/idempotency/tests/helpers/populateEnvironmentVariables.ts

@@ -2,7 +2,12 @@ const populateEnvironmentVariables = (): void => {
   process.env.AWS_LAMBDA_FUNCTION_NAME = 'hello-world';
 
 };
+
+const deleteEnvironmentVariables = (): void => {
+  delete process.env.AWS_LAMBDA_FUNCTION_NAME;
+}
 
 export {
+  deleteEnvironmentVariables,
   populateEnvironmentVariables,
 };

packages/idempotency/tests/unit/EnvironmentVariableService.test.ts

@@ -0,0 +1,34 @@
+/**
+ * Test Tracer class
+ *
+ * @group unit/idempotency/all
+ */
+import { EnvironmentVariablesService } from '../../src/EnvironmentVariablesService';
+
+describe('Class: EnvironmentVariableService', ()=> {
+  describe('Method: getLambdaFunctionName', ()=> {
+    beforeEach(() => {
+      process.env.AWS_LAMBDA_FUNCTION_NAME = 'testFunction';
+    });
+
+    afterEach(()=> {
+      delete process.env.AWS_LAMBDA_FUNCTION_NAME;
+    });
+
+    test('When called it getse the Lambda function name from the environment variable', ()=> {
+      const expectedName = process.env.AWS_LAMBDA_FUNCTION_NAME;
+
+      const lambdaName = new EnvironmentVariablesService().getLambdaFunctionName();
+
+      expect(lambdaName).toEqual(expectedName);
+    });
+
+    test('When called without the environment variable set it returns an empty string', ()=> {
+      delete process.env.AWS_LAMBDA_FUNCTION_NAME;
+
+      const lambdaName = new EnvironmentVariablesService().getLambdaFunctionName();
+
+      expect(lambdaName).toEqual('');
+    });
+  });
+});

packages/idempotency/tests/unit/PersistenceLayer.test.ts renamed to packages/idempotency/tests/unit/persistence/PersistenceLayer.test.ts

@@ -4,9 +4,9 @@
  * @group unit/idempotency/all
  */
 import { createHash, Hash } from 'crypto';
-import { EnvironmentVariablesService } from '../../src/EnvironmentVariablesService';
-import { IdempotencyRecord, PersistenceLayer } from '../../src/persistence';
-import { IdempotencyRecordStatus } from '../../src/types/IdempotencyRecordStatus';
+import { EnvironmentVariablesService } from '../../../src/EnvironmentVariablesService';
+import { IdempotencyRecord, PersistenceLayer } from '../../../src/persistence';
+import { IdempotencyRecordStatus } from '../../../src/types/IdempotencyRecordStatus';
 
 jest.mock('crypto', () => ({
   createHash: jest.fn(),