ceph/src/jaegertracing/thrift/lib/java/test/org/apache/thrift/TestOptionType.java

   1 /*
   2  * Licensed to the Apache Software Foundation (ASF) under one
   3  * or more contributor license agreements. See the NOTICE file
   4  * distributed with this work for additional information
   5  * regarding copyright ownership. The ASF licenses this file
   6  * to you under the Apache License, Version 2.0 (the
   7  * "License"); you may not use this file except in compliance
   8  * with the License. You may obtain a copy of the License at
   9  *
  10  *   http://www.apache.org/licenses/LICENSE-2.0
  11  *
  12  * Unless required by applicable law or agreed to in writing,
  13  * software distributed under the License is distributed on an
  14  * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
  15  * KIND, either express or implied. See the License for the
  16  * specific language governing permissions and limitations
  17  * under the License.
  18  */
  19
  20 package org.apache.thrift;
  21
  22 import junit.framework.TestCase;
  23 import org.apache.thrift.Option;
  24
  25 // Tests and documents behavior for the "Option<T>" type
  26 public class TestOptionType extends TestCase {
  27     public void testSome() throws Exception {
  28         String name = "Chuck Norris";
  29         Option<String> option = Option.fromNullable(name);
  30
  31         assertTrue(option instanceof Option.Some);
  32         assertTrue(option.isDefined());
  33         assertEquals("Some(Chuck Norris)", option.toString());
  34         assertEquals(option.or("default value"), "Chuck Norris");
  35         assertEquals(option.get(),"Chuck Norris");
  36     }
  37
  38     public void testNone() throws Exception {
  39         String name = null;
  40         Option<String> option = Option.fromNullable(name);
  41
  42         assertTrue(option instanceof Option.None);
  43         assertFalse(option.isDefined());
  44         assertEquals("None", option.toString());
  45         assertEquals(option.or("default value"), "default value");
  46         // Expect exception
  47         try {
  48             Object value = option.get();
  49             fail("Expected IllegalStateException, got no exception");
  50         } catch (IllegalStateException ex) {
  51
  52         } catch(Exception ex) {
  53             fail("Expected IllegalStateException, got some other exception: "+ex.toString());
  54         }
  55     }
  56
  57     public void testMakeSome() throws Exception {
  58         Option<String> some = Option.some("wee");
  59         assertTrue(some instanceof Option.Some);
  60     }
  61
  62     public void testMakeNone() throws Exception {
  63         Option<Integer> none = Option.none();
  64         assertTrue(none instanceof Option.None);
  65     }
  66 }