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CatalogsTest.java
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CatalogsTest.java
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/*
* The MIT License (MIT)
*
* Copyright (c) 2016-2024 Objectionary.com
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included
* in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*/
package org.eolang.maven;
import com.yegor256.tojos.Tojo;
import com.yegor256.tojos.Tojos;
import java.nio.file.Path;
import java.util.UUID;
import java.util.stream.Collectors;
import java.util.stream.IntStream;
import org.cactoos.Scalar;
import org.cactoos.experimental.Threads;
import org.cactoos.number.SumOf;
import org.hamcrest.MatcherAssert;
import org.hamcrest.Matchers;
import org.junit.jupiter.api.Test;
import org.junit.jupiter.api.io.TempDir;
/**
* Concurrency tests for {@link Catalogs}.
* All tests in that class must be executed in parallel and in order to be sure that
* everything works fine it's important to run the tests many times.
* @since 0.29.0
*/
final class CatalogsTest {
/**
* Number of cores on the running system.
*/
private static final int CORES = Runtime.getRuntime().availableProcessors();
@Test
void readsFromTojosConcurrently(@TempDir final Path tmp) {
final Tojos tojos = Catalogs.INSTANCE.make(tmp.resolve("foreign"), "json");
MatcherAssert.assertThat(
"TO ADD ASSERTION MESSAGE",
new SumOf(
new Threads<>(
CatalogsTest.CORES,
IntStream.range(0, CatalogsTest.CORES)
.mapToObj(i -> tojos.add(UUID.randomUUID().toString()))
.map(CatalogsTest::task)
.collect(Collectors.toList())
)
),
Matchers.equalTo(CatalogsTest.CORES)
);
}
/**
* Task to be executed in parallel.
* @param tojo Tojo
* @return Scalar
*/
private static Scalar<Integer> task(final Tojo tojo) {
return () -> {
final String uuid = "uuid";
tojo.set(uuid, UUID.randomUUID().toString());
tojo.get(uuid);
tojo.get(uuid);
tojo.get(uuid);
tojo.get(uuid);
return 1;
};
}
}