mirror of
https://github.com/ICDSystems/ICD.Common.Utils.git
synced 2026-01-11 19:44:55 +00:00
541 lines
13 KiB
C#
541 lines
13 KiB
C#
using System.Collections.Generic;
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using System.Linq;
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using ICD.Common.Utils.Collections;
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using ICD.Common.Utils.Extensions;
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using NUnit.Framework;
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namespace ICD.Common.Utils.Tests.Extensions
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{
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[TestFixture]
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public sealed class EnumerableExtensionsTest
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{
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[TestCase(0)]
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[TestCase(1)]
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public void FirstOrDefaultTest(int expected)
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{
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IEnumerable<int> sequence = Enumerable.Empty<int>();
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Assert.AreEqual(expected, sequence.FirstOrDefault(expected));
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}
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[TestCase(0)]
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[TestCase(1)]
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public void FirstOrDefaultPredicateTest(int expected)
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{
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IEnumerable<int> sequence = Enumerable.Range(1, 10).Except(expected);
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Assert.AreEqual(expected, sequence.FirstOrDefault(i => i == expected, expected));
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}
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[TestCase(0)]
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[TestCase(1)]
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public void TryFirstTest(int expected)
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{
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IEnumerable<int> sequence = Enumerable.Empty<int>();
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int result;
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bool exists = sequence.TryFirst(out result);
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Assert.AreEqual(0, result);
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Assert.AreEqual(false, exists);
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sequence = new[] {expected};
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exists = sequence.TryFirst(out result);
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Assert.AreEqual(expected, result);
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Assert.AreEqual(true, exists);
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}
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[TestCase(0)]
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[TestCase(1)]
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public void TryFirstPredicateTest(int expected)
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{
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IEnumerable<int> sequence = Enumerable.Range(1, 10).Except(expected);
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int result;
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bool exists = sequence.TryFirst(i => i == expected, out result);
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Assert.AreEqual(0, result);
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Assert.AreEqual(false, exists);
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sequence = new[] {expected};
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exists = sequence.TryFirst(i => i == expected, out result);
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Assert.AreEqual(expected, result);
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Assert.AreEqual(true, exists);
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}
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[TestCase(1)]
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public void TryLastTest(int expected)
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{
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IEnumerable<int> sequence = Enumerable.Empty<int>();
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int result;
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bool exists = sequence.TryLast(out result);
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Assert.AreEqual(0, result);
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Assert.AreEqual(false, exists);
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sequence = new[] { expected };
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exists = sequence.TryLast(out result);
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Assert.AreEqual(expected, result);
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Assert.AreEqual(true, exists);
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}
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[TestCase(0)]
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[TestCase(1)]
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public void TryLastPredicateTest(int expected)
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{
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IEnumerable<int> sequence = Enumerable.Range(1, 10).Except(expected);
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int result;
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bool exists = sequence.TryLast(i => i == expected, out result);
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Assert.AreEqual(0, result);
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Assert.AreEqual(false, exists);
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sequence = new[] { expected };
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exists = sequence.TryLast(i => i == expected, out result);
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Assert.AreEqual(expected, result);
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Assert.AreEqual(true, exists);
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}
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[TestCase(0, 0)]
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[TestCase(1, 10)]
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public void TryElementAtTest(int index, int expected)
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{
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IEnumerable<int> sequence = Enumerable.Empty<int>();
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int result;
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bool exists = sequence.TryElementAt(index, out result);
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Assert.AreEqual(0, result);
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Assert.AreEqual(false, exists);
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sequence = new[] {expected};
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exists = sequence.TryElementAt(0, out result);
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Assert.AreEqual(expected, result);
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Assert.AreEqual(true, exists);
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}
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[Test]
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public void SequenceEqualTest()
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{
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int[] a = {1, 2, 3, 4};
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int[] b = {1, 4, 9, 16};
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Assert.IsFalse(a.SequenceEqual(b, (x, y) => x == y));
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Assert.IsTrue(a.SequenceEqual(b, (x, y) => x * x == y));
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}
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[Test]
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public void ScrambledEqualsTest()
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{
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IEnumerable<int> a = new[] {1, 2, 3, 4};
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IEnumerable<int> b = new[] {3, 1, 2, 4};
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IEnumerable<int> c = new[] {1, 2, 3, 4, 4};
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IEnumerable<int> d = new[] {1, 2, 3, 4, 5};
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Assert.IsTrue(a.ScrambledEquals(b));
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Assert.IsFalse(a.ScrambledEquals(c));
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Assert.IsFalse(a.ScrambledEquals(d));
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}
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[Test]
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public void ScrambledEqualsComparerTest()
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{
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IEnumerable<int> a = new[] {1, 2, 3, 4};
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IEnumerable<int> b = new[] {3, 1, 2, 4};
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IEnumerable<int> c = new[] {1, 2, 3, 4, 4};
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IEnumerable<int> d = new[] {1, 2, 3, 4, 5};
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Assert.IsTrue(a.ScrambledEquals(b, EqualityComparer<int>.Default));
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Assert.IsFalse(a.ScrambledEquals(c, EqualityComparer<int>.Default));
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Assert.IsFalse(a.ScrambledEquals(d, EqualityComparer<int>.Default));
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}
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[Test]
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public void FindIndexPredicateTest()
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{
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IEnumerable<int> a = new[] {1, 2, 3, 4};
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Assert.AreEqual(2, a.FindIndex(i => i == 3));
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}
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[Test]
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public void FindIndicesPredicateTest()
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{
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IEnumerable<int> a = new[] {1, 2, 3, 4};
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int[] indices = a.FindIndices(i => i % 2 == 0).ToArray();
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Assert.AreEqual(2, indices.Length);
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Assert.AreEqual(1, indices[0]);
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Assert.AreEqual(3, indices[1]);
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}
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[Test]
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public void SelectMultiTest()
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{
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int[] values = {1, 2, 3};
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int[] result = values.SelectMulti(i => 1, i => 2).ToArray();
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Assert.AreEqual(6, result.Length);
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Assert.AreEqual(1, result[0]);
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Assert.AreEqual(2, result[1]);
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Assert.AreEqual(1, result[2]);
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Assert.AreEqual(2, result[3]);
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Assert.AreEqual(1, result[4]);
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Assert.AreEqual(2, result[5]);
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}
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[Test]
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public void ExecuteTest()
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{
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int[] values = {1, 2, 3};
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int sum = 0;
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IEnumerable<int> sequence = values.Select(v =>
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{
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sum += v;
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return v;
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});
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Assert.AreEqual(0, sum);
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sequence.Execute();
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Assert.AreEqual(6, sum);
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}
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[Test]
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public void ForEachTest()
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{
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int[] values = {1, 2, 3};
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int sum = 0;
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values.ForEach(v => sum += v);
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Assert.AreEqual(6, sum);
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}
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[Test]
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public void ForEachIndexTest()
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{
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int[] values = {1, 2, 3};
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int sum = 0;
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values.ForEach((v, i) => sum += i);
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Assert.AreEqual(3, sum);
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}
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#if SIMPLSHARP
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[Test]
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public void PrependTest()
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{
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Assert.Inconclusive();
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}
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#endif
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[Test]
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public void PrependManyTest()
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{
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int[] values = new[] {4, 5, 6}.PrependMany(1, 2, 3).ToArray();
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Assert.AreEqual(6, values.Length);
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Assert.AreEqual(1, values[0]);
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Assert.AreEqual(2, values[1]);
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Assert.AreEqual(3, values[2]);
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Assert.AreEqual(4, values[3]);
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Assert.AreEqual(5, values[4]);
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Assert.AreEqual(6, values[5]);
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}
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#if SIMPLSHARP
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[Test]
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public void AppendTest()
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{
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Assert.Inconclusive();
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}
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#endif
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[Test]
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public void AppendManyTest()
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{
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int[] values = new[] {1, 2, 3}.AppendMany(4, 5, 6).ToArray();
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Assert.AreEqual(6, values.Length);
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Assert.AreEqual(1, values[0]);
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Assert.AreEqual(2, values[1]);
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Assert.AreEqual(3, values[2]);
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Assert.AreEqual(4, values[3]);
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Assert.AreEqual(5, values[4]);
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Assert.AreEqual(6, values[5]);
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}
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[Test]
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public void PadRightTest()
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{
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int[] items = new[] {1, 2, 3}.PadRight(5).ToArray();
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Assert.AreEqual(5, items.Length);
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Assert.AreEqual(1, items[0]);
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Assert.AreEqual(2, items[1]);
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Assert.AreEqual(3, items[2]);
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Assert.AreEqual(0, items[3]);
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Assert.AreEqual(0, items[4]);
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items = items.PadRight(2).ToArray();
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Assert.AreEqual(5, items.Length);
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}
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[Test]
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public void OrderTest()
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{
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int[] values = new[] {2, 3, 1}.Order().ToArray();
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Assert.AreEqual(3, values.Length);
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Assert.AreEqual(1, values[0]);
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Assert.AreEqual(2, values[1]);
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Assert.AreEqual(3, values[2]);
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}
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[Test]
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public void ExceptTest()
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{
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int[] values = new[] {1, 2, 3}.Except(2).ToArray();
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Assert.AreEqual(2, values.Length);
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Assert.AreEqual(1, values[0]);
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Assert.AreEqual(3, values[1]);
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}
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[Test]
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public void ToArrayCountTest()
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{
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int[] array = Enumerable.Range(0, 100).ToArray();
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int[] copy = array.ToArray(array.Length);
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Assert.IsTrue(copy.SequenceEqual(array));
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}
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[Test]
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public void ToListCountTest()
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{
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List<int> array = Enumerable.Range(0, 100).ToList();
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List<int> copy = array.ToList(array.Count);
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Assert.IsTrue(copy.SequenceEqual(array));
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}
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[Test]
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public void ToHashSetTest()
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{
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IcdHashSet<int> values = new[] {1, 2, 3}.ToIcdHashSet();
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Assert.AreEqual(3, values.Count);
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Assert.IsTrue(values.Contains(1));
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Assert.IsTrue(values.Contains(2));
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Assert.IsTrue(values.Contains(3));
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}
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[Test]
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public void ToDictionaryIntTest()
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{
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Dictionary<int, int> values = new[] {1, 2, 3}.ToDictionary();
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Assert.AreEqual(3, values.Count);
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Assert.AreEqual(1, values[0]);
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Assert.AreEqual(2, values[1]);
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Assert.AreEqual(3, values[2]);
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}
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[Test]
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public void ToDictionaryUIntTest()
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{
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Dictionary<uint, int> values = new[] {1, 2, 3}.ToDictionaryUInt();
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Assert.AreEqual(3, values.Count);
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Assert.AreEqual(1, values[0]);
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Assert.AreEqual(2, values[1]);
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Assert.AreEqual(3, values[2]);
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}
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[Test]
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public void ToDictionaryTest()
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{
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KeyValuePair<int, string>[] items =
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{
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new KeyValuePair<int, string>(0, "A"),
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new KeyValuePair<int, string>(1, "B"),
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new KeyValuePair<int, string>(2, "C")
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};
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Dictionary<int, string> values = items.ToDictionary();
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Assert.AreEqual(3, values.Count);
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Assert.AreEqual("A", values[0]);
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Assert.AreEqual("B", values[1]);
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Assert.AreEqual("C", values[2]);
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}
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[Test]
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public void DistinctTest()
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{
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string[] items =
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{
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"one",
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"two",
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"three"
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};
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items = items.Distinct(i => i.Length).ToArray();
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Assert.AreEqual(2, items.Length);
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Assert.AreEqual("one", items[0]);
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Assert.AreEqual("three", items[1]);
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}
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[Test]
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public void DistinctComparerTest()
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{
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Assert.Inconclusive();
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}
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[Test]
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public void UnanimousTest()
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{
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Assert.IsTrue(new[] {true, true, true}.Unanimous());
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Assert.IsTrue(new[] {false, false, false}.Unanimous());
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Assert.IsFalse(new[] {false, true, false}.Unanimous());
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Assert.IsFalse(new bool[] { }.Unanimous());
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}
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[Test]
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public void UnanimousOtherTest()
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{
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Assert.AreEqual("A", new[] {"A", "A", "A"}.Unanimous("B"));
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Assert.AreEqual("C", new[] {"B", "A", "B"}.Unanimous("C"));
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Assert.AreEqual("A", new string[] { }.Unanimous("A"));
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}
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[Test]
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public void PartitionTest()
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{
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int[][] items = new[] {1, 2, 3, 4, 5, 6, 7, 8}.Partition(3)
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.Select(p => p.ToArray())
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.ToArray();
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Assert.AreEqual(3, items.Length);
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Assert.AreEqual(3, items[0].Length);
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Assert.AreEqual(3, items[1].Length);
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Assert.AreEqual(2, items[2].Length);
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Assert.AreEqual(1, items[0][0]);
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Assert.AreEqual(2, items[0][1]);
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Assert.AreEqual(3, items[0][2]);
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Assert.AreEqual(4, items[1][0]);
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Assert.AreEqual(5, items[1][1]);
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Assert.AreEqual(6, items[1][2]);
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Assert.AreEqual(7, items[2][0]);
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Assert.AreEqual(8, items[2][1]);
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}
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[Test]
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public void GetAdjacentPairsTest()
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{
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IEnumerable<int> a = new int[] { };
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Assert.AreEqual(0, a.GetAdjacentPairs().Count());
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IEnumerable<int> b = new[] {1};
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Assert.AreEqual(0, b.GetAdjacentPairs().Count());
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IEnumerable<int> c = new[] {1, 2, 3};
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int[][] cPairs = c.GetAdjacentPairs().ToArray();
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Assert.AreEqual(2, cPairs.Length);
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Assert.AreEqual(1, cPairs[0][0]);
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Assert.AreEqual(2, cPairs[0][1]);
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Assert.AreEqual(2, cPairs[1][0]);
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Assert.AreEqual(3, cPairs[1][1]);
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}
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[Test]
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public void GetClosestTest()
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{
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Assert.AreEqual(20, new[] {10, 15, 20, 30, 35}.GetClosest(i => i - 21));
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}
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[Test]
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public void MinByTest()
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{
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Assert.AreEqual(1, new[] {3, 6, 2, 7, 1}.MinBy(i => i));
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}
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[Test]
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public void MinByComparerTest()
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{
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IComparer<int> comparer = new NegativeComparer();
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Assert.AreEqual(7, new[] {3, 6, 2, 7, 1}.MinBy(i => i, comparer));
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}
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private class NegativeComparer : IComparer<int>
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{
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public int Compare(int x, int y)
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{
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return Comparer<int>.Default.Compare(-x, -y);
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}
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}
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[Test]
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public void ExceptNullsTest()
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{
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IEnumerable<int?> sequence = new int?[] {1, 2, null, 3, 4, null};
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int[] result = sequence.ExceptNulls().ToArray();
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Assert.AreEqual(4, result.Length);
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Assert.AreEqual(1, result[0]);
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Assert.AreEqual(2, result[1]);
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Assert.AreEqual(3, result[2]);
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Assert.AreEqual(4, result[3]);
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}
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[Test]
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public void SumTest()
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{
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IEnumerable<byte> sequence = new byte[] {1, 2, 3, 4};
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Assert.AreEqual(10, sequence.Sum());
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}
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[Test]
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public void ConsolidateTest()
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{
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string[] sequence = new[] {"A", "B", "B", "C"}.Consolidate().ToArray();
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Assert.AreEqual(3, sequence.Length, StringUtils.ArrayFormat(sequence));
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Assert.AreEqual("A", sequence[0]);
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Assert.AreEqual("B", sequence[1]);
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Assert.AreEqual("C", sequence[2]);
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}
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[Test]
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public void ConsolidateComparerTest()
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{
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string[] sequence = new[] {"A", "B", "B", "C"}.Consolidate(Comparer<string>.Default).ToArray();
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Assert.AreEqual(3, sequence.Length, StringUtils.ArrayFormat(sequence));
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Assert.AreEqual("A", sequence[0]);
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Assert.AreEqual("B", sequence[1]);
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Assert.AreEqual("C", sequence[2]);
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}
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[Test]
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public void AnyAndAllTest()
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{
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IEnumerable<int> sequence = new[] {1, 2, 3, 4};
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Assert.IsTrue(sequence.AnyAndAll(i => i > 0));
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Assert.IsFalse(sequence.AnyAndAll(i => i < 0));
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Assert.IsFalse(Enumerable.Empty<int>().AnyAndAll(i => i > 0));
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}
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}
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}
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