Project import generated by Copybara.
GitOrigin-RevId: d9e9e3fb4e31372ec1fb43b178994ca78fa8fe70
diff --git a/static_src/shared/experiments.test.js b/static_src/shared/experiments.test.js
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+++ b/static_src/shared/experiments.test.js
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+// Copyright 2020 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+import {assert} from 'chai';
+import {isExperimentEnabled, SLO_EXPERIMENT} from './experiments.js';
+
+
+describe('isExperimentEnabled', () => {
+ it('throws error for unknown experiment', () => {
+ assert.throws(() =>
+ isExperimentEnabled('unknown-exp', {displayName: 'jessan@google.com'}));
+ });
+
+ it('returns false if user not in experiment', () => {
+ const ineligibleUser = {displayName: 'example@example.com'};
+ assert.isFalse(isExperimentEnabled(SLO_EXPERIMENT, ineligibleUser, {}));
+ });
+
+ it('returns false if no user provided', () => {
+ assert.isFalse(isExperimentEnabled(SLO_EXPERIMENT, undefined, {}));
+ });
+
+ it('returns true if user in experiment', () => {
+ const eligibleUser = {displayName: 'jessan@google.com'};
+ assert.isTrue(isExperimentEnabled(SLO_EXPERIMENT, eligibleUser, {}));
+ });
+
+ it('is false if user in experiment has disabled it with URL', () => {
+ const eligibleUser = {displayName: 'jessan@google.com'};
+ assert.isFalse(isExperimentEnabled(
+ SLO_EXPERIMENT, eligibleUser, {'e': '-slo'}));
+ });
+
+ it('ignores enabling experiments with URL', () => {
+ const ineligibleUser = {displayName: 'example@example.com'};
+ assert.isFalse(isExperimentEnabled(
+ SLO_EXPERIMENT, ineligibleUser, {'e': 'slo'}));
+ });
+
+ it('ignores ineligible users disabling experiment with URL', () => {
+ const ineligibleUser = {displayName: 'example@example.com'};
+ assert.isFalse(isExperimentEnabled(
+ SLO_EXPERIMENT, ineligibleUser, {'e': '-slo'}));
+ });
+
+ it('ignores invalid experiments in URL', () => {
+ const eligibleUser = {displayName: 'jessan@google.com'};
+ // Leading comma, unknown experiment str, empty experiment str in
+ // middle, disable_str with no experiment, trailing comma
+ assert.isFalse(isExperimentEnabled(
+ SLO_EXPERIMENT, eligibleUser, {'e': ',unknown,-slo,,-,'}));
+ });
+
+ it('respects last instance when experiment repeated in URL', () => {
+ const eligibleUser = {displayName: 'jessan@google.com'};
+ assert.isFalse(isExperimentEnabled(
+ SLO_EXPERIMENT, eligibleUser, {'e': 'slo,-slo'}));
+ assert.isTrue(isExperimentEnabled(
+ SLO_EXPERIMENT, eligibleUser, {'e': '-slo,slo'}));
+ });
+});