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/*
* SPDX-License-Identifier: Apache-2.0
*
* Copyright 2018-2019 Tomasz Linkowski.
*
* Licensed 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 pl.tlinkowski.unij.test.service.misc
import spock.lang.Shared
import spock.lang.Specification
import java.util.stream.Collectors
import java.util.stream.Stream
import pl.tlinkowski.unij.service.api.misc.MiscellaneousApiProvider
/**
* Specification for {@link MiscellaneousApiProvider}.
*
* Inheriting classes should initialize {@code provider} in the {@code setupSpec} method.
*
* @author Tomasz Linkowski
*/
abstract class MiscellaneousApiProviderSpec extends Specification {
@Shared
protected MiscellaneousApiProvider provider
//region COLLECTORS: STANDARD CONTRACT (corresponds to MISCELLANEOUS region of UniCollectorsSpec)
def "flatMappingCollector"(List<Integer> list, List<Integer> expected) {
when:
def collector = provider.flatMappingCollector({ Stream.of(it, -it) }, Collectors.toList())
then:
list.stream().collect(collector) == expected
where:
list | expected
[] | []
[1] | [1, -1]
[-1] | [-1, 1]
[1, 2] | [1, -1, 2, -2]
[1, 2, 3] | [1, -1, 2, -2, 3, -3]
}
def "filteringCollector"(List<Integer> list, List<Integer> expected) {
when:
def collector = provider.filteringCollector({ it % 2 != 0 }, Collectors.toList())
then:
list.stream().collect(collector) == expected
where:
list | expected
[] | []
[1] | [1]
[2] | []
[1, 2] | [1]
[1, 2, 3] | [1, 3]
}
//endregion
//region COLLECTORS: SPECIAL CASES
def "flatMappingCollector handles null as empty stream"() {
when:
def collector = provider.flatMappingCollector({ null }, Collectors.toList())
then:
[1, 2, 3].stream().collect(collector) == []
}
//endregion
}
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