| /* |
| * 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 |
| |
| /** |
| * VarargsMethodTest.groovy |
| * |
| * 1) Test to fix the Jira issues GROOVY-1023 and GROOVY-1026. |
| * 2) Test the feature that the length of arguments can be variable |
| * when invoking methods with or without parameters. |
| */ |
| class VarargsMethodTest extends GroovyTestCase { |
| |
| void testVarargsOnly() { |
| assertEquals 1, varargsOnlyMethod('') |
| assertEquals 1, varargsOnlyMethod(1) |
| assertEquals 2, varargsOnlyMethod('','') |
| assertEquals 1, varargsOnlyMethod( ['',''] ) |
| assertEquals 2, varargsOnlyMethod( ['',''] as Object[]) |
| assertEquals 2, varargsOnlyMethod( *['',''] ) |
| |
| // GROOVY-1023 |
| assertEquals 0, varargsOnlyMethod() |
| |
| // GROOVY-1026 |
| assertEquals(-1, varargsOnlyMethod(null)) |
| assertEquals(2, varargsOnlyMethod(null, null)) |
| } |
| |
| Integer varargsOnlyMethod(Object[] args) { |
| // GROOVY-1023 (Java 5 feature) |
| // If this method having varargs is invoked with no parameter, |
| // then args is not null, but an array of length 0. |
| // GROOVY-1026 (Java 5 feature) |
| // If this method having varargs is invoked with one parameter |
| // null, then args is null, and so -1 is returned here. |
| if (args == null) |
| return -1 |
| return args.size() |
| } |
| |
| void testVarargsLast() { |
| assertEquals 0, varargsLastMethod('') |
| assertEquals 0, varargsLastMethod(1) |
| assertEquals 1, varargsLastMethod('','') |
| assertEquals 2, varargsLastMethod('','','') |
| assertEquals 1, varargsLastMethod('', ['',''] ) |
| assertEquals 2, varargsLastMethod('', ['',''] as Object[]) |
| assertEquals 2, varargsLastMethod('', *['',''] ) |
| |
| // GROOVY-1026 |
| assertEquals(-1, varargsLastMethod('', null)) |
| assertEquals(2, varargsLastMethod('', null, null)) |
| } |
| |
| Integer varargsLastMethod(Object first, Object[] args) { |
| // GROOVY-1026 (Java 5 feature) |
| // If this method having varargs is invoked with two parameters |
| // 1 and null, then args is null, and so -1 is returned here. |
| if (args == null) |
| return -1 |
| return args.size() |
| } |
| } |