fix: Add no-op tests (open-feature#99)

Add no-op tests

Signed-off-by: Todd Baert <[email protected]>

test/no-op.spec.ts

@@ -0,0 +1,25 @@
+import { OpenFeatureClient } from '../src/client.js';
+import { OpenFeature } from '../src/open-feature.js';
+
+const BOOLEAN_VALUE = true;
+const STRING_VALUE = 'val';
+const NUMBER_VALUE = 2034;
+const OBJECT_VALUE = {
+  key: 'value',
+};
+
+const NO_OP_FLAG = 'no-op-flag';
+
+describe(OpenFeatureClient.name, () => {
+  describe('No-op behavior', () => {
+    // create a no-op client.
+    const client = OpenFeature.getClient();
+
+    it('should default all evaluations', async () => {
+      await expect(client.getBooleanValue(NO_OP_FLAG, BOOLEAN_VALUE)).resolves.toEqual(BOOLEAN_VALUE);
+      await expect(client.getStringValue(NO_OP_FLAG, STRING_VALUE)).resolves.toEqual(STRING_VALUE);
+      await expect(client.getNumberValue(NO_OP_FLAG, NUMBER_VALUE)).resolves.toEqual(NUMBER_VALUE);
+      await expect(client.getObjectValue(NO_OP_FLAG, OBJECT_VALUE)).resolves.toEqual(OBJECT_VALUE);
+    });
+  });
+});