| /* |
| * 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 |
| |
| /** |
| * Tests for ClosureComparator |
| */ |
| class ClosureComparatorTest extends GroovyTestCase { |
| |
| void testClosureComparatorForGroovyObjects() { |
| |
| def comparator = new ClosureComparator({ one, another -> |
| one.greaterThan(another) |
| }) |
| |
| def one = new ComparableFoo(5) |
| def another = new ComparableFoo(-5) |
| |
| assertEquals(10, comparator.compare(one, another)) |
| assertEquals(0, comparator.compare(one, one)) |
| assertEquals(-10, comparator.compare(another, one)) |
| |
| } |
| |
| void testClosureComparatorForNumericTypes() { |
| |
| def comparator = new ClosureComparator({ one, another -> |
| one - another |
| }) |
| |
| assertEquals(1, comparator.compare(Integer.MAX_VALUE, Integer.MAX_VALUE - 1)) |
| assertEquals(0, comparator.compare(Double.MIN_VALUE, Double.MIN_VALUE)) |
| assertEquals(-1, comparator.compare(Long.MIN_VALUE, Long.MIN_VALUE + 1)) |
| } |
| |
| } |
| |
| class ComparableFoo { |
| long value |
| |
| ComparableFoo(long theValue) { |
| this.value = theValue |
| } |
| |
| def greaterThan(anotherFoo) { |
| return (this.value - anotherFoo.value) |
| } |
| } |