add unit test

x-pack/legacy/plugins/siem/server/utils/build_validation/route_validation.test.ts

@@ -0,0 +1,39 @@
+/*
+ * Copyright Elasticsearch B.V. and/or licensed to Elasticsearch B.V. under one
+ * or more contributor license agreements. Licensed under the Elastic License;
+ * you may not use this file except in compliance with the Elastic License.
+ */
+
+import { buildRouteValidation } from './route_validation';
+import * as rt from 'io-ts';
+import { RouteValidationResultFactory } from '../../../../../../../src/core/server/http';
+
+describe('buildRouteValidation', () => {
+  const schema = rt.type({
+    ids: rt.array(rt.string),
+  });
+  const validationResult: RouteValidationResultFactory = {
+    ok: jest.fn().mockImplementation(validatedInput => validatedInput),
+    badRequest: jest.fn().mockImplementation(e => e),
+  };
+
+  beforeEach(() => {
+    jest.clearAllMocks();
+  });
+
+  test('return validation error', () => {
+    const input = { id: 'someId' };
+    const result = buildRouteValidation(schema)(input, validationResult);
+
+    expect(result).toEqual(
+      'Invalid value undefined supplied to : { ids: Array<string> }/ids: Array<string>'
+    );
+  });
+
+  test('return validated input', () => {
+    const input = { ids: ['someId'] };
+    const result = buildRouteValidation(schema)(input, validationResult);
+
+    expect(result).toEqual(input);
+  });
+});