| /* |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you 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 groovy |
| |
| import groovy.test.GroovyTestCase |
| |
| class SafeNavigationTest extends GroovyTestCase { |
| |
| void testNullNavigation() { |
| def x = null |
| def y = x?.bar |
| assert y == null |
| } |
| |
| void testNormalPropertyNavigation() { |
| def x = ['a':456, 'foo':['bar':123, 'x':456], 'z':99] |
| def y = x?.foo?.bar |
| assert y == 123 |
| } |
| |
| void testNullPropertyNavigation() { |
| def x = null |
| def y = x?.foo?.bar |
| assert y == null |
| |
| def Date d = null |
| def t = d?.time |
| assert t == null |
| } |
| |
| void testNormalMethodCall() { |
| def x = 1234 |
| def y = x?.toString() |
| assert y == "1234" |
| } |
| |
| void testNullMethodCall() { |
| def x = null |
| def y = x?.toString() |
| assert y == null |
| } |
| |
| void testNewLine() { |
| def x = [ a:1, b:2 ] |
| def y = x |
| .y |
| ?.toString() |
| assert y == null |
| def m = 'toString' |
| def z = x |
| .a |
| ?."$m"() |
| assert z == '1' |
| } |
| |
| // ------------------------------------ |
| // GROOVY-5479 |
| private checkDouble(x) { |
| x?.toString() |
| } |
| |
| void testCachedSafeNavigation() { |
| assert checkDouble(1234)!=null |
| assert checkDouble(null)==null |
| } |
| // ------------------------------------ |
| |
| } |