1 /* 2 * Copyright (C) 2011 The Guava 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 com.google.common.base; 18 19 import com.google.common.annotations.GwtCompatible; 20 import com.google.common.annotations.GwtIncompatible; 21 import com.google.common.testing.EqualsTester; 22 import com.google.common.testing.NullPointerTester; 23 import com.google.common.testing.SerializableTester; 24 25 import junit.framework.TestCase; 26 27 /** 28 * Tests for {@link Enums}. 29 * 30 * @author Steve McKay 31 */ 32 @GwtCompatible(emulated = true) 33 public class EnumsTest extends TestCase { 34 35 private enum TestEnum { 36 CHEETO, 37 HONDA, 38 POODLE, 39 } 40 41 private enum OtherEnum {} 42 testValueOfFunction()43 public void testValueOfFunction() { 44 Function<String, TestEnum> function = Enums.valueOfFunction(TestEnum.class); 45 assertEquals(TestEnum.CHEETO, function.apply("CHEETO")); 46 assertEquals(TestEnum.HONDA, function.apply("HONDA")); 47 assertEquals(TestEnum.POODLE, function.apply("POODLE")); 48 } 49 testValueOfFunction_caseSensitive()50 public void testValueOfFunction_caseSensitive() { 51 Function<String, TestEnum> function = Enums.valueOfFunction(TestEnum.class); 52 assertNull(function.apply("cHEETO")); 53 assertNull(function.apply("Honda")); 54 assertNull(function.apply("poodlE")); 55 } 56 testValueOfFunction_nullWhenNotMatchingConstant()57 public void testValueOfFunction_nullWhenNotMatchingConstant() { 58 Function<String, TestEnum> function = Enums.valueOfFunction(TestEnum.class); 59 assertNull(function.apply("WOMBAT")); 60 } 61 testValueOfFunction_equals()62 public void testValueOfFunction_equals() { 63 new EqualsTester() 64 .addEqualityGroup( 65 Enums.valueOfFunction(TestEnum.class), Enums.valueOfFunction(TestEnum.class)) 66 .addEqualityGroup(Enums.valueOfFunction(OtherEnum.class)) 67 .testEquals(); 68 } 69 70 @GwtIncompatible("SerializableTester") testValueOfFunction_serialization()71 public void testValueOfFunction_serialization() { 72 Function<String, TestEnum> function = Enums.valueOfFunction(TestEnum.class); 73 SerializableTester.reserializeAndAssert(function); 74 } 75 76 @GwtIncompatible("NullPointerTester") testNullPointerExceptions()77 public void testNullPointerExceptions() throws Exception { 78 NullPointerTester tester = new NullPointerTester(); 79 tester.testAllPublicStaticMethods(Enums.class); 80 } 81 } 82