gx
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2025-06-12 7b72ac13a83764a662159d4a49b7fffb90476ecb
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/**
 * @license
 * Copyright 2017 Google LLC. All Rights Reserved.
 * 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 * as environment from './environment';
import { Environment } from './environment';
describe('initializes flags from the url', () => {
    // Silence console.warns for these tests.
    beforeAll(() => spyOn(console, 'warn').and.returnValue(null));
    it('no overrides one registered flag', () => {
        const global = { location: { search: '' } };
        const env = new Environment(global);
        spyOn(env, 'getQueryParams').and.returnValue({});
        env.registerFlag('FLAG1', () => false);
        expect(env.get('FLAG1')).toBe(false);
    });
    it('one unregistered flag', () => {
        const global = { location: { search: '' } };
        const env = new Environment(global);
        spyOn(env, 'getQueryParams').and.returnValue({ 'tfjsflags': 'FLAG1:true' });
        expect(env.features).toEqual({});
    });
    it('one registered flag true', () => {
        const global = { location: { search: '?tfjsflags=FLAG1:true' } };
        const env = new Environment(global);
        env.registerFlag('FLAG1', () => false);
        expect(env.get('FLAG1')).toBe(true);
    });
    it('one registered flag false', () => {
        const global = { location: { search: '?tfjsflags=FLAG1:false' } };
        const env = new Environment(global);
        env.registerFlag('FLAG1', () => true);
        expect(env.get('FLAG1')).toBe(false);
    });
    it('two registered flags', () => {
        const global = { location: { search: '?tfjsflags=FLAG1:true,FLAG2:200' } };
        const env = new Environment(global);
        env.registerFlag('FLAG1', () => false);
        env.registerFlag('FLAG2', () => 100);
        expect(env.get('FLAG1')).toBe(true);
        expect(env.get('FLAG2')).toBe(200);
    });
    it('one registered flag string', () => {
        const global = { location: { search: '?tfjsflags=FLAG1:FlagString' } };
        const env = new Environment(global);
        env.registerFlag('FLAG1', () => 'FlagString');
        expect(env.get('FLAG1')).toBe('FlagString');
        expect(env.get('FLAG1')).not.toBe('flagstring');
    });
    it('one registered flag empty string', () => {
        const global = { location: { search: '?tfjsflags=FLAG1:' } };
        const env = new Environment(global);
        env.registerFlag('FLAG1', () => 'FlagString');
        expect(env.get('FLAG1')).toBe('');
    });
});
describe('flag registration and evaluation', () => {
    it('one flag registered', () => {
        const env = new Environment({});
        const evalObject = { eval: () => true };
        const spy = spyOn(evalObject, 'eval').and.callThrough();
        env.registerFlag('FLAG1', () => evalObject.eval());
        expect(env.get('FLAG1')).toBe(true);
        expect(spy.calls.count()).toBe(1);
        // Multiple calls to get do not call the evaluation function again.
        expect(env.get('FLAG1')).toBe(true);
        expect(spy.calls.count()).toBe(1);
    });
    it('one string flag registered', () => {
        const env = new Environment({});
        env.registerFlag('FLAG1', () => '');
        // Set to a non empty string, this is case sensitive.
        env.set('FLAG1', 'FlagString');
        expect(env.get('FLAG1')).toBe('FlagString');
        expect(env.get('FLAG1')).not.toBe('flagString');
    });
    it('multiple flags registered', () => {
        const env = new Environment({});
        const evalObject = { eval1: () => true, eval2: () => 100 };
        const spy1 = spyOn(evalObject, 'eval1').and.callThrough();
        const spy2 = spyOn(evalObject, 'eval2').and.callThrough();
        env.registerFlag('FLAG1', () => evalObject.eval1());
        env.registerFlag('FLAG2', () => evalObject.eval2());
        expect(env.get('FLAG1')).toBe(true);
        expect(spy1.calls.count()).toBe(1);
        expect(spy2.calls.count()).toBe(0);
        expect(env.get('FLAG2')).toBe(100);
        expect(spy1.calls.count()).toBe(1);
        expect(spy2.calls.count()).toBe(1);
        // Multiple calls to get do not call the evaluation function again.
        expect(env.get('FLAG1')).toBe(true);
        expect(env.get('FLAG2')).toBe(100);
        expect(spy1.calls.count()).toBe(1);
        expect(spy2.calls.count()).toBe(1);
    });
    it('setting overrides value', () => {
        const env = new Environment({});
        const evalObject = { eval: () => true };
        const spy = spyOn(evalObject, 'eval').and.callThrough();
        env.registerFlag('FLAG1', () => evalObject.eval());
        expect(env.get('FLAG1')).toBe(true);
        expect(spy.calls.count()).toBe(1);
        env.set('FLAG1', false);
        expect(env.get('FLAG1')).toBe(false);
        expect(spy.calls.count()).toBe(1);
    });
    it('set hook is called', () => {
        const env = new Environment({});
        const evalObject = { eval: () => true, setHook: () => true };
        const evalSpy = spyOn(evalObject, 'eval').and.callThrough();
        const setHookSpy = spyOn(evalObject, 'setHook').and.callThrough();
        env.registerFlag('FLAG1', () => evalObject.eval(), () => evalObject.setHook());
        expect(env.get('FLAG1')).toBe(true);
        expect(evalSpy.calls.count()).toBe(1);
        expect(setHookSpy.calls.count()).toBe(0);
        env.set('FLAG1', false);
        expect(env.get('FLAG1')).toBe(false);
        expect(evalSpy.calls.count()).toBe(1);
        expect(setHookSpy.calls.count()).toBe(1);
    });
});
describe('environment.getQueryParams', () => {
    it('basic', () => {
        expect(environment.getQueryParams('?a=1&b=hi&f=animal'))
            .toEqual({ 'a': '1', 'b': 'hi', 'f': 'animal' });
    });
});
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* @license\n * Copyright 2017 Google LLC. All Rights Reserved.\n * Licensed under the Apache License, Version 2.0 (the \"License\");\n * you may not use this file except in compliance with the License.\n * You may obtain a copy of the License at\n *\n * http://www.apache.org/licenses/LICENSE-2.0\n *\n * Unless required by applicable law or agreed to in writing, software\n * distributed under the License is distributed on an \"AS IS\" BASIS,\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n * See the License for the specific language governing permissions and\n * limitations under the License.\n * =============================================================================\n */\n\nimport * as environment from './environment';\nimport {Environment} from './environment';\n\ndescribe('initializes flags from the url', () => {\n  // Silence console.warns for these tests.\n  beforeAll(() => spyOn(console, 'warn').and.returnValue(null));\n\n  it('no overrides one registered flag', () => {\n    const global = {location: {search: ''}};\n    const env = new Environment(global);\n    spyOn(env, 'getQueryParams').and.returnValue({});\n\n    env.registerFlag('FLAG1', () => false);\n    expect(env.get('FLAG1')).toBe(false);\n  });\n\n  it('one unregistered flag', () => {\n    const global = {location: {search: ''}};\n    const env = new Environment(global);\n    spyOn(env, 'getQueryParams').and.returnValue({'tfjsflags': 'FLAG1:true'});\n    expect(env.features).toEqual({});\n  });\n\n  it('one registered flag true', () => {\n    const global = {location: {search: '?tfjsflags=FLAG1:true'}};\n    const env = new Environment(global);\n    env.registerFlag('FLAG1', () => false);\n\n    expect(env.get('FLAG1')).toBe(true);\n  });\n\n  it('one registered flag false', () => {\n    const global = {location: {search: '?tfjsflags=FLAG1:false'}};\n    const env = new Environment(global);\n    env.registerFlag('FLAG1', () => true);\n\n    expect(env.get('FLAG1')).toBe(false);\n  });\n\n  it('two registered flags', () => {\n    const global = {location: {search: '?tfjsflags=FLAG1:true,FLAG2:200'}};\n    const env = new Environment(global);\n    env.registerFlag('FLAG1', () => false);\n    env.registerFlag('FLAG2', () => 100);\n\n    expect(env.get('FLAG1')).toBe(true);\n    expect(env.get('FLAG2')).toBe(200);\n  });\n\n  it('one registered flag string', () => {\n    const global = {location: {search: '?tfjsflags=FLAG1:FlagString'}};\n    const env = new Environment(global);\n    env.registerFlag('FLAG1', () => 'FlagString');\n\n    expect(env.get('FLAG1')).toBe('FlagString');\n    expect(env.get('FLAG1')).not.toBe('flagstring');\n  });\n\n  it('one registered flag empty string', () => {\n    const global = {location: {search: '?tfjsflags=FLAG1:'}};\n    const env = new Environment(global);\n    env.registerFlag('FLAG1', () => 'FlagString');\n\n    expect(env.get('FLAG1')).toBe('');\n  });\n});\n\ndescribe('flag registration and evaluation', () => {\n  it('one flag registered', () => {\n    const env = new Environment({});\n\n    const evalObject = {eval: () => true};\n    const spy = spyOn(evalObject, 'eval').and.callThrough();\n\n    env.registerFlag('FLAG1', () => evalObject.eval());\n\n    expect(env.get('FLAG1')).toBe(true);\n    expect(spy.calls.count()).toBe(1);\n\n    // Multiple calls to get do not call the evaluation function again.\n    expect(env.get('FLAG1')).toBe(true);\n    expect(spy.calls.count()).toBe(1);\n  });\n\n  it('one string flag registered', () => {\n    const env = new Environment({});\n\n    env.registerFlag('FLAG1', () => '');\n\n    // Set to a non empty string, this is case sensitive.\n    env.set('FLAG1', 'FlagString');\n    expect(env.get('FLAG1')).toBe('FlagString');\n    expect(env.get('FLAG1')).not.toBe('flagString');\n  });\n\n  it('multiple flags registered', () => {\n    const env = new Environment({});\n\n    const evalObject = {eval1: () => true, eval2: () => 100};\n    const spy1 = spyOn(evalObject, 'eval1').and.callThrough();\n    const spy2 = spyOn(evalObject, 'eval2').and.callThrough();\n\n    env.registerFlag('FLAG1', () => evalObject.eval1());\n    env.registerFlag('FLAG2', () => evalObject.eval2());\n\n    expect(env.get('FLAG1')).toBe(true);\n    expect(spy1.calls.count()).toBe(1);\n    expect(spy2.calls.count()).toBe(0);\n    expect(env.get('FLAG2')).toBe(100);\n    expect(spy1.calls.count()).toBe(1);\n    expect(spy2.calls.count()).toBe(1);\n\n    // Multiple calls to get do not call the evaluation function again.\n    expect(env.get('FLAG1')).toBe(true);\n    expect(env.get('FLAG2')).toBe(100);\n    expect(spy1.calls.count()).toBe(1);\n    expect(spy2.calls.count()).toBe(1);\n  });\n\n  it('setting overrides value', () => {\n    const env = new Environment({});\n\n    const evalObject = {eval: () => true};\n    const spy = spyOn(evalObject, 'eval').and.callThrough();\n\n    env.registerFlag('FLAG1', () => evalObject.eval());\n\n    expect(env.get('FLAG1')).toBe(true);\n    expect(spy.calls.count()).toBe(1);\n\n    env.set('FLAG1', false);\n\n    expect(env.get('FLAG1')).toBe(false);\n    expect(spy.calls.count()).toBe(1);\n  });\n\n  it('set hook is called', () => {\n    const env = new Environment({});\n\n    const evalObject = {eval: () => true, setHook: () => true};\n    const evalSpy = spyOn(evalObject, 'eval').and.callThrough();\n    const setHookSpy = spyOn(evalObject, 'setHook').and.callThrough();\n\n    env.registerFlag(\n        'FLAG1', () => evalObject.eval(), () => evalObject.setHook());\n\n    expect(env.get('FLAG1')).toBe(true);\n    expect(evalSpy.calls.count()).toBe(1);\n    expect(setHookSpy.calls.count()).toBe(0);\n\n    env.set('FLAG1', false);\n\n    expect(env.get('FLAG1')).toBe(false);\n    expect(evalSpy.calls.count()).toBe(1);\n    expect(setHookSpy.calls.count()).toBe(1);\n  });\n});\n\ndescribe('environment.getQueryParams', () => {\n  it('basic', () => {\n    expect(environment.getQueryParams('?a=1&b=hi&f=animal'))\n        .toEqual({'a': '1', 'b': 'hi', 'f': 'animal'});\n  });\n});\n"]}