50 lines
1.6 KiB
C#
50 lines
1.6 KiB
C#
using System;
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namespace VirtualChemistry.Test;
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public static class BIndexTest
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{
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private static int BIndex(int index, int multi)
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{
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if (multi == 1)
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return 0;
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if (multi % 2 == 1)
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{
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int center = multi / 2 + 1;
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return center - index;
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}
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if (multi % 2 == 0)
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{
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double center = multi / 2 + 0.5;
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return (int)(center > index ? Math.Ceiling(center - index) : Math.Floor(center - index));
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}
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return 0;
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}
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[Test]
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public static void TestCase1()
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{
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Assert.That(BIndex(1, 1), Is.EqualTo(0));
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Assert.That(BIndex(1, 2), Is.EqualTo(1));
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Assert.That(BIndex(2,2), Is.EqualTo(-1));
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Assert.That(BIndex(1, 3), Is.EqualTo(1));
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Assert.That(BIndex(2, 3), Is.EqualTo(0));
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Assert.That(BIndex(3, 3), Is.EqualTo(-1));
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Assert.That(BIndex(1,4), Is.EqualTo(2));
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Assert.That(BIndex(2, 4), Is.EqualTo(1));
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Assert.That(BIndex(3, 4), Is.EqualTo(-1));
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Assert.That(BIndex(4, 4), Is.EqualTo(-2));
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Assert.That(BIndex(1, 5), Is.EqualTo(2));
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Assert.That(BIndex(2, 5), Is.EqualTo(1));
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Assert.That(BIndex(3, 5), Is.EqualTo(0));
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Assert.That(BIndex(4, 5), Is.EqualTo(-1));
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Assert.That(BIndex(5, 5), Is.EqualTo(-2));
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Assert.That(BIndex(1, 6), Is.EqualTo(3));
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Assert.That(BIndex(2, 6), Is.EqualTo(2));
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Assert.That(BIndex(3, 6),Is.EqualTo(1));
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Assert.That(BIndex(4, 6),Is.EqualTo(-1));
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Assert.That(BIndex(5, 6), Is.EqualTo(-2));
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Assert.That(BIndex(6,6), Is.EqualTo(-3));
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}
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} |