blob: 9ce8d7af6a725ee0fa5eb819c8f62090e5f8980c [file] [log] [blame]
/*
* 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 PrefixTest extends GroovyTestCase {
void testIntegerPrefix() {
def x = 1
def y = ++x
assert y == 2
assert x == 2
assert ++x == 3
}
void testDoublePrefix() {
def x = 1.2
def y = ++x
assert y == 2.2
assert x == 2.2
assert ++x == 3.2
assert x == 3.2
}
void testStringPrefix() {
def x = "bbc"
++x
assert x == "bbd"
--x
--x
assert x == "bbb"
def y = ++"bbc"
assert y == "bbd"
}
void testArrayPrefix() {
int[] i = [1]
++i[0]
assert i[0] == 2
--i[0]
--i[0]
assert i[0] == 0
}
void testConstantPostFix() {
assert 2 == ++1
}
def valueReturned() { 0 }
void testFunctionPostfix() {
def z = ++(valueReturned())
assert z == 1
}
void testPrefixAndPostfix() {
def u = 0
assert -1 == -- u --
assert 0 == ++ u ++
assert -2 == (--(--u))
assert -1 == u
}
}