| /* |
| * Copyright 2016 The Bazel Authors. 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. |
| */ |
| package com.google.idea.common.experiments; |
| |
| import static com.google.common.base.Preconditions.checkState; |
| import static com.google.common.truth.Truth.assertThat; |
| |
| import java.util.HashMap; |
| import java.util.Map; |
| import org.junit.Test; |
| import org.junit.runner.RunWith; |
| import org.junit.runners.JUnit4; |
| |
| /** Tests for {@link ExperimentServiceImpl}. */ |
| @RunWith(JUnit4.class) |
| public class ExperimentServiceImplTest { |
| |
| @Test |
| public void testBooleanPropertyTrue() { |
| ExperimentService experimentService = |
| new ExperimentServiceImpl(new MapExperimentLoader("test.property", "1")); |
| assertThat(experimentService.getExperiment("test.property", false)).isTrue(); |
| } |
| |
| @Test |
| public void testBooleanPropertyFalse() { |
| ExperimentService experimentService = |
| new ExperimentServiceImpl(new MapExperimentLoader("test.property", "0")); |
| assertThat(experimentService.getExperiment("test.property", true)).isFalse(); |
| } |
| |
| @Test |
| public void testBooleanPropertyReturnsDefaultWhenMissing() { |
| ExperimentService experimentService = new ExperimentServiceImpl(new MapExperimentLoader()); |
| assertThat(experimentService.getExperiment("test.notthere", true)).isTrue(); |
| } |
| |
| @Test |
| public void testStringProperty() { |
| ExperimentService experimentService = |
| new ExperimentServiceImpl(new MapExperimentLoader("test.property", "hi")); |
| assertThat(experimentService.getExperimentString("test.property", null)).isEqualTo("hi"); |
| } |
| |
| @Test |
| public void testStringPropertyReturnsDefaultWhenMissing() { |
| ExperimentService experimentService = new ExperimentServiceImpl(new MapExperimentLoader()); |
| assertThat(experimentService.getExperimentString("test.property", "bye")).isEqualTo("bye"); |
| } |
| |
| @Test |
| public void testFirstLoaderOverridesSecond() { |
| ExperimentService experimentService = |
| new ExperimentServiceImpl( |
| new MapExperimentLoader("test.property", "1"), |
| new MapExperimentLoader("test.property", "0")); |
| assertThat(experimentService.getExperiment("test.property", false)).isTrue(); |
| } |
| |
| @Test |
| public void testOnlyInSecondLoader() { |
| ExperimentService experimentService = |
| new ExperimentServiceImpl( |
| new MapExperimentLoader(), new MapExperimentLoader("test.property", "1")); |
| assertThat(experimentService.getExperiment("test.property", false)).isTrue(); |
| } |
| |
| @Test |
| public void testIntProperty() { |
| ExperimentService experimentService = |
| new ExperimentServiceImpl(new MapExperimentLoader("test.property", "10")); |
| assertThat(experimentService.getExperimentInt("test.property", 0)).isEqualTo(10); |
| } |
| |
| @Test |
| public void testIntPropertyDefaultValue() { |
| ExperimentService experimentService = new ExperimentServiceImpl(new MapExperimentLoader()); |
| assertThat(experimentService.getExperimentInt("test.property", 100)).isEqualTo(100); |
| } |
| |
| @Test |
| public void testIntPropertyThatDoesntParseReturnsDefaultValue() { |
| ExperimentService experimentService = |
| new ExperimentServiceImpl(new MapExperimentLoader("test.property", "hello")); |
| assertThat(experimentService.getExperimentInt("test.property", 111)).isEqualTo(111); |
| } |
| |
| @Test |
| public void testDataIsReloadedWhenNotInAScope() throws Exception { |
| MapExperimentLoader experimentLoader = new MapExperimentLoader(); |
| ExperimentService experimentService = new ExperimentServiceImpl(experimentLoader); |
| assertThat(experimentService.getExperimentString("test.property", "default")) |
| .isEqualTo("default"); |
| experimentLoader.map.put("test.property", "hello"); |
| assertThat(experimentService.getExperimentString("test.property", "default")) |
| .isEqualTo("hello"); |
| } |
| |
| @Test |
| public void testDataIsFrozenWheninAScope() throws Exception { |
| MapExperimentLoader experimentLoader = new MapExperimentLoader(); |
| ExperimentService experimentService = new ExperimentServiceImpl(experimentLoader); |
| experimentService.startExperimentScope(); |
| assertThat(experimentService.getExperimentString("test.property", "default")) |
| .isEqualTo("default"); |
| experimentLoader.map.put("test.property", "hello"); |
| assertThat(experimentService.getExperimentString("test.property", "default")) |
| .isEqualTo("default"); |
| } |
| |
| @Test |
| public void testDataIsReloadedAgainWhenLeavingAScope() throws Exception { |
| MapExperimentLoader experimentLoader = new MapExperimentLoader(); |
| ExperimentService experimentService = new ExperimentServiceImpl(experimentLoader); |
| experimentService.startExperimentScope(); |
| assertThat(experimentService.getExperimentString("test.property", "default")) |
| .isEqualTo("default"); |
| experimentLoader.map.put("test.property", "hello"); |
| experimentService.endExperimentScope(); |
| assertThat(experimentService.getExperimentString("test.property", "default")) |
| .isEqualTo("hello"); |
| } |
| |
| @Test |
| public void testEnterTwoScopesButOnlyLeaveOne() throws Exception { |
| MapExperimentLoader experimentLoader = new MapExperimentLoader(); |
| ExperimentService experimentService = new ExperimentServiceImpl(experimentLoader); |
| experimentService.startExperimentScope(); |
| assertThat(experimentService.getExperimentString("test.property", "default")) |
| .isEqualTo("default"); |
| experimentService.startExperimentScope(); |
| experimentService.endExperimentScope(); |
| experimentLoader.map.put("test.property", "hello"); |
| assertThat(experimentService.getExperimentString("test.property", "default")) |
| .isEqualTo("default"); |
| } |
| |
| @Test |
| public void testEnterAndLeaveTwoScopes() throws Exception { |
| MapExperimentLoader experimentLoader = new MapExperimentLoader(); |
| ExperimentService experimentService = new ExperimentServiceImpl(experimentLoader); |
| experimentService.startExperimentScope(); |
| assertThat(experimentService.getExperimentString("test.property", "default")) |
| .isEqualTo("default"); |
| experimentService.startExperimentScope(); |
| experimentService.endExperimentScope(); |
| experimentService.endExperimentScope(); |
| experimentLoader.map.put("test.property", "hello"); |
| assertThat(experimentService.getExperimentString("test.property", "default")) |
| .isEqualTo("hello"); |
| } |
| |
| @Test |
| public void testLeaveAndEnterRefreshes() throws Exception { |
| MapExperimentLoader experimentLoader = new MapExperimentLoader(); |
| experimentLoader.map.put("test.property", "one"); |
| ExperimentService experimentService = new ExperimentServiceImpl(experimentLoader); |
| experimentService.startExperimentScope(); |
| assertThat(experimentService.getExperimentString("test.property", "default")).isEqualTo("one"); |
| experimentLoader.map.put("test.property", "two"); |
| experimentService.endExperimentScope(); |
| experimentService.startExperimentScope(); |
| assertThat(experimentService.getExperimentString("test.property", "default")).isEqualTo("two"); |
| } |
| |
| private static class MapExperimentLoader extends HashingExperimentLoader { |
| |
| private final Map<String, String> map; |
| |
| private MapExperimentLoader(String... keysAndValues) { |
| checkState(keysAndValues.length % 2 == 0); |
| map = new HashMap<>(); |
| for (int i = 0; i < keysAndValues.length; i += 2) { |
| map.put(keysAndValues[i], keysAndValues[i + 1]); |
| } |
| } |
| |
| @Override |
| public Map<String, String> getUnhashedExperiments() { |
| return map; |
| } |
| |
| @Override |
| public void initialize() {} |
| } |
| } |