1 /* 2 * Copyright (C) 2014 The Dagger Authors. 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 package dagger.internal; 18 19 import static com.google.common.truth.Truth.assertThat; 20 21 import java.util.LinkedHashMap; 22 import java.util.Map; 23 import java.util.concurrent.atomic.AtomicInteger; 24 import org.junit.Rule; 25 import org.junit.Test; 26 import org.junit.rules.ExpectedException; 27 import org.junit.runner.RunWith; 28 import org.junit.runners.JUnit4; 29 30 @RunWith(JUnit4.class) 31 @SuppressWarnings("unchecked") 32 public class MapProviderFactoryTest { 33 @Rule 34 public ExpectedException thrown = ExpectedException.none(); 35 36 @Test nullKey()37 public void nullKey() { 38 thrown.expect(NullPointerException.class); 39 MapProviderFactory.<String, Integer>builder(1).put(null, incrementingIntegerProvider(1)); 40 } 41 42 @Test nullValue()43 public void nullValue() { 44 thrown.expect(NullPointerException.class); 45 MapProviderFactory.<String, Integer>builder(1).put("Hello", null); 46 } 47 48 49 @Test iterationOrder()50 public void iterationOrder() { 51 Provider<Integer> p1 = incrementingIntegerProvider(10); 52 Provider<Integer> p2 = incrementingIntegerProvider(20); 53 Provider<Integer> p3 = incrementingIntegerProvider(30); 54 Provider<Integer> p4 = incrementingIntegerProvider(40); 55 Provider<Integer> p5 = incrementingIntegerProvider(50); 56 57 Factory<Map<String, Provider<Integer>>> factory = MapProviderFactory 58 .<String, Integer>builder(4) 59 .put("two", p2) 60 .put("one", p1) 61 .put("three", p3) 62 .put("one", p5) 63 .put("four", p4) 64 .build(); 65 66 Map<String, Provider<Integer>> expectedMap = new LinkedHashMap<>(); 67 expectedMap.put("two", p2); 68 expectedMap.put("one", p1); 69 expectedMap.put("three", p3); 70 expectedMap.put("one", p5); 71 expectedMap.put("four", p4); 72 assertThat(factory.get().entrySet()) 73 .containsExactlyElementsIn(expectedMap.entrySet()) 74 .inOrder(); 75 } 76 77 incrementingIntegerProvider(int seed)78 private static Provider<Integer> incrementingIntegerProvider(int seed) { 79 return new AtomicInteger(seed)::getAndIncrement; 80 } 81 } 82