| /* |
| * 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 UniqueOnCollectionTest extends GroovyTestCase { |
| |
| void testUnique() { |
| def list = [-1, 0, 1, 1, 0, -1] |
| assert list.unique() == [-1, 0, 1] |
| } |
| |
| void testUniqueOnListNoDupls() { |
| assert [].unique() == [] |
| assert [1].unique() == [1] |
| assert [1, 2].unique() == [1, 2] |
| def a = [1, 2] |
| assert a.is(a.unique()) |
| } |
| |
| void testUniqueOnListOneDupl() { |
| assert [1, 1].unique() == [1] |
| def a = [1, 1] |
| assert a.is(a.unique()) |
| assert [1, 2, 1].unique() == [1, 2] |
| assert [1, 2, 1, 1].unique() == [1, 2] |
| assert [1, 1, 2].unique() == [1, 2] |
| assert [1, 1, 2, 1].unique() == [1, 2] |
| assert [1, 1, 2, 1, 1].unique() == [1, 2] |
| } |
| |
| void testUniqueOnListTwoDupls() { |
| assert [1, 1, 2, 2].unique() == [1, 2] |
| def a = [1, 1, 2, 2] |
| assert a.is(a.unique()) |
| assert [1, 2, 1, 2].unique() == [1, 2] |
| assert [1, 2, 1, 1, 2].unique() == [1, 2] |
| assert [1, 1, 2, 2].unique() == [1, 2] |
| assert [1, 1, 2, 1, 2].unique() == [1, 2] |
| assert [1, 1, 2, 2, 1, 1, 2, 2].unique() == [1, 2] |
| } |
| |
| void testUniqueOnIterator() { |
| def it = [1, 1, 2, 2].iterator().unique() |
| assert it instanceof Iterator |
| def result = it.toList() |
| assert result == [1, 2] |
| } |
| |
| void testUniqueOnOtherCollections() { |
| def a = new HashSet([1, 1]) |
| assert a.is(a.unique()) |
| assert 1 == a.size() |
| a = new TreeSet([1, 1]) |
| assert a.is(a.unique()) |
| assert 1 == a.size() |
| a = new Vector([1, 1]) |
| assert a.is(a.unique()) |
| assert 1 == a.size() |
| a = new LinkedList([1, 1]) |
| assert a.is(a.unique()) |
| assert 1 == a.size() |
| } |
| |
| /** GROOVY-1006 */ |
| void testUniqueOnDifferentTypes() { |
| def a = [1, 2, (short) 1, 2L, 2.0] |
| def b = a.unique() |
| assert (b == a && a == [1, 2]) |
| a = [Math.PI, "foo", 1.0, 2L, (short) 2, 2.0F] |
| b = a.unique() |
| assert (b == a && a == [Math.PI, "foo", 1.0, 2L]) |
| } |
| |
| /** GROOVY-1956 */ |
| void testUniqueOnListWithNulls() { |
| def x = [1, 2, 3, 1, 2, 3, null, 'a', null] |
| x.unique() |
| assert x == [1, 2, 3, null, 'a'] |
| } |
| |
| /** GROOVY-4742 */ |
| void testNonMutatingList() { |
| def it = [-1, 0, 1, 1, 0, -1] |
| def uniq = it.unique( false ) |
| assert uniq != it |
| assert uniq == [-1, 0, 1] |
| assert it == [-1, 0, 1, 1, 0, -1] |
| } |
| |
| /** GROOVY-4742 */ |
| void testImmutableUniqueListWithDefaultComparator() { |
| def orig = [1, 3, 2, 3] |
| def uniq = orig.unique(false) |
| assert orig == [1, 3, 2, 3] |
| assert uniq == [1, 3, 2] |
| } |
| } |