50 lines
1.0 KiB
C#
50 lines
1.0 KiB
C#
using FluentAssertions;
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using PerfectNumbers.Core.Gpu.Accelerators;
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using Xunit;
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namespace PerfectNumbers.Core.Tests;
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[Trait("Category", "Fast")]
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public class MersenneResidueModeTests
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{
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[Fact]
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public void IsMersennePrime_residue_mode_rejects_composite_exponent()
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{
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var tester = new MersenneNumberTester(
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useResidue: true,
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useIncremental: false,
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useGpuScan: false,
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useGpuOrder: false);
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var gpu = PrimeOrderCalculatorAccelerator.Rent(1);
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try
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{
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tester.IsMersennePrime(gpu, 136_000_002UL).Should().BeFalse();
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}
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finally
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{
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PrimeOrderCalculatorAccelerator.Return(gpu);
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}
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}
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[Fact]
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public void IsMersennePrime_residue_mode_accepts_prime_exponent()
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{
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var tester = new MersenneNumberTester(
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useResidue: true,
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useIncremental: true,
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useGpuScan: false,
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useGpuOrder: false,
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maxK: 1_000UL);
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var gpu = PrimeOrderCalculatorAccelerator.Rent(1);
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try
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{
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tester.IsMersennePrime(gpu, 31UL).Should().BeTrue();
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}
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finally
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{
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PrimeOrderCalculatorAccelerator.Return(gpu);
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}
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}
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}
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