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Preserve RNG state integrity in case unit tests would be run concurrently.

This commit is contained in:
Gilles Sadowski 2021-08-09 10:27:34 +02:00
parent 1444d2d8d1
commit c04dd79f0f
1 changed files with 2 additions and 1 deletions
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3
commons-math-legacy/src/test/java/org/apache/commons/math4/legacy/optim/nonlinear/scalar/noderiv/OptimTestUtils.java
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@ -19,6 +19,7 @@ package org.apache.commons.math4.legacy.optim.nonlinear.scalar.noderiv;
import java.util.Arrays; import java.util.Arrays;
import org.apache.commons.rng.UniformRandomProvider; import org.apache.commons.rng.UniformRandomProvider;
import org.apache.commons.rng.simple.RandomSource; import org.apache.commons.rng.simple.RandomSource;
import org.apache.commons.rng.simple.ThreadLocalRandomSource;
import org.apache.commons.rng.sampling.distribution.MarsagliaNormalizedGaussianSampler; import org.apache.commons.rng.sampling.distribution.MarsagliaNormalizedGaussianSampler;
import org.apache.commons.rng.sampling.distribution.ContinuousUniformSampler; import org.apache.commons.rng.sampling.distribution.ContinuousUniformSampler;
import org.apache.commons.math4.legacy.analysis.MultivariateFunction; import org.apache.commons.math4.legacy.analysis.MultivariateFunction;
@ -113,7 +114,7 @@ final class OptimTestUtils {
/** Creates a RNG instance. */ /** Creates a RNG instance. */
static UniformRandomProvider rng() { static UniformRandomProvider rng() {
return RandomSource.MWC_256.create(); return ThreadLocalRandomSource.current(RandomSource.MWC_256);
} }
private static class Basis { private static class Basis {