82 lines
2.4 KiB
C#
82 lines
2.4 KiB
C#
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// Copyright (c) Microsoft Open Technologies, Inc. All rights reserved. See License.txt in the project root for license information.
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using System;
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using System.Text;
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using System.Collections.Generic;
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using System.Linq;
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#if NUNIT
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using NUnit.Framework;
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using TestClassAttribute = NUnit.Framework.TestFixtureAttribute;
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using TestMethodAttribute = NUnit.Framework.TestAttribute;
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using TestInitializeAttribute = NUnit.Framework.SetUpAttribute;
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#else
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using Microsoft.VisualStudio.TestTools.UnitTesting;
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#endif
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namespace Tests
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{
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public partial class Tests
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{
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[TestMethod]
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public void Concat_Arguments()
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{
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AssertThrows<ArgumentNullException>(() => EnumerableEx.Concat(default(IEnumerable<int>[])));
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AssertThrows<ArgumentNullException>(() => EnumerableEx.Concat(default(IEnumerable<IEnumerable<int>>)));
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}
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[TestMethod]
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public void Concat1()
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{
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var res = new[]
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{
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new[] { 1, 2, 3 },
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new[] { 4, 5 }
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}.Concat();
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Assert.IsTrue(Enumerable.SequenceEqual(res, new[] { 1, 2, 3, 4, 5 }));
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}
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[TestMethod]
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public void Concat2()
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{
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var i = 0;
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var xss = Enumerable.Range(0, 3).Select(x => Enumerable.Range(0, x + 1)).Do(_ => ++i);
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var res = xss.Concat().Select(x => i + " - " + x).ToList();
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Assert.IsTrue(Enumerable.SequenceEqual(res, new[] {
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"1 - 0",
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"2 - 0",
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"2 - 1",
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"3 - 0",
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"3 - 1",
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"3 - 2",
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}));
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}
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[TestMethod]
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public void Concat3()
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{
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var res = EnumerableEx.Concat(
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new[] { 1, 2, 3 },
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new[] { 4, 5 }
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);
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Assert.IsTrue(Enumerable.SequenceEqual(res, new[] { 1, 2, 3, 4, 5 }));
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}
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[TestMethod]
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public void SelectMany_Arguments()
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{
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AssertThrows<ArgumentNullException>(() => EnumerableEx.SelectMany<int, int>(null, new[] { 1 }));
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AssertThrows<ArgumentNullException>(() => EnumerableEx.SelectMany<int, int>(new[] { 1 }, null));
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}
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[TestMethod]
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public void SelectMany()
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{
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var res = new[] { 1, 2 }.SelectMany(new[] { 'a', 'b', 'c' }).ToList();
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Assert.IsTrue(Enumerable.SequenceEqual(res, new[] { 'a', 'b', 'c', 'a', 'b', 'c' }));
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}
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}
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}
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