[FSSDK-11238] config validator test addition

Author: junaed-optimizely

lib/utils/config_validator/index.spec.ts

@@ -0,0 +1,45 @@
+/**
+ * Copyright 2025, Optimizely
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+import { describe, it, expect } from 'vitest';
+import configValidator from './';
+import testData from '../../tests/test_data';
+import { INVALID_DATAFILE_MALFORMED, INVALID_DATAFILE_VERSION, NO_DATAFILE_SPECIFIED } from 'error_message';
+import { OptimizelyError } from '../../error/optimizly_error';
+
+describe('validate', () => {
+  it('should complain if datafile is not provided', () => {
+    // eslint-disable-next-line @typescript-eslint/ban-ts-comment
+    // @ts-ignore
+    expect(() => configValidator.validateDatafile()).toThrowError(new OptimizelyError(NO_DATAFILE_SPECIFIED));
+  });
+
+  it('should complain if datafile is malformed', () => {
+    expect(() => configValidator.validateDatafile('abc')).toThrowError(new OptimizelyError(INVALID_DATAFILE_MALFORMED));
+  });
+
+  it('should complain if datafile version is not supported', () => {
+    expect(() =>
+      configValidator
+        .validateDatafile(JSON.stringify(testData.getUnsupportedVersionConfig()))
+        .toThrowError(new OptimizelyError(INVALID_DATAFILE_VERSION))
+    );
+  });
+
+  it('should not complain if datafile is valid', function() {
+    expect(() => configValidator.validateDatafile(JSON.stringify(testData.getTestProjectConfig())).not.toThrowError());
+  });
+});