/**
 * Copyright (c) 2020 EmeraldPay, Inc
 *
 * 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 io.emeraldpay.dshackle.reader

import reactor.core.publisher.Mono
import spock.lang.Specification

import java.util.function.Function

class RekeyingReaderSpec extends Specification {

    def "Simple rekey"() {
        setup:
        Reader<Long, Long> r = new Reader<Long, Long>() {
            @Override
            Mono<Long> read(Long key) {
                return Mono.just(key * 2)
            }
        }
        Function<String, Long> f = { String s -> Long.parseLong(s) }
        when:
        def rekey = new RekeyingReader(f, r)
        def act = rekey.read("4").block()
        then:
        act == 8
    }
}
