/* * The MIT License (MIT) * * Copyright (c) 2017-2020 Yegor Bugayenko * * 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.cactoos.scalar; import java.security.SecureRandom; import org.cactoos.Scalar; import org.cactoos.list.ListOf; import org.hamcrest.core.IsEqual; import org.junit.Test; import org.llorllale.cactoos.matchers.Assertion; import org.llorllale.cactoos.matchers.RunsInThreads; import org.llorllale.cactoos.matchers.ScalarHasValue; /** * Test case for {@link Solid}. * * @since 0.24 * @checkstyle JavadocMethodCheck (500 lines) * @checkstyle ClassDataAbstractionCouplingCheck (500 lines) */ public final class SolidTest { @Test public void cachesScalarResults() throws Exception { final Scalar<Integer> scalar = new Solid<>( () -> new SecureRandom().nextInt() ); new Assertion<>( "must compute value only once", scalar.value() + scalar.value(), new IsEqual<>(scalar.value() + scalar.value()) ).affirm(); } @Test public void worksInThreads() { new Assertion<>( "must work well in multiple threads", scalar -> { new Assertion<>( "must compute value once", scalar, new ScalarHasValue<>(scalar.value()) ).affirm(); return true; }, new RunsInThreads<>( new Unchecked<>( new Solid<>(() -> new ListOf<>(1, 2)) ) ) ).affirm(); } }