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/*
* 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 UniqueOnCollectionWithClosureTest extends GroovyTestCase {
void testUniqueOnIterator() {
def list = [-1, 0, 1, 1, 0, -1]
def closure = { a, b -> Math.abs(a) <=> Math.abs(b) }
def it = list.iterator().unique(closure)
assert it instanceof Iterator
def result = it.toList()
assert result == [-1, 0]
}
/** GROOVY-3213 */
void testUniqueWithTwoParameterClosureOnSet() {
def set = [-1, 0, 1] as Set
def closure = { a, b -> Math.abs(a) <=> Math.abs(b) }
assert set.unique(closure).size() == 2
}
/** GROOVY-1236 */
void testUniqueWithTwoParameterClosure() {
def list = [-1, 0, 1, 1, 0, -1]
def closure = { a, b -> Math.abs(a) <=> Math.abs(b) }
assert list.unique(closure) == [-1, 0]
}
/** GROOVY-1236 */
void testUniqueWithOneParameterClosure() {
def list = [-1, 0, 1, 1, 0, -1]
def closure = { a -> Math.abs(a) }
assert list.unique(closure) == [-1, 0]
}
/** GROOVY-4742 */
void testImmutableCollectionWithOneParamClosure() {
def orig = [1, 3, 4, 5]
def uniq = orig.unique(false) { it % 2 }
assert orig == [1, 3, 4, 5]
assert uniq == [1, 4]
}
/** GROOVY-4742 */
void testImmutableCollectionWithTwoParamClosure() {
def orig = [2, 3, 3, 4]
def uniq = orig.unique(false) { a, b -> a <=> b }
assert orig == [2, 3, 3, 4]
assert uniq == [2, 3, 4]
}
}