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// Licensed to the .NET Foundation under one or more agreements.
// The .NET Foundation licenses this file to you under the MIT license.
// See the LICENSE file in the project root for more information.
#nullable disable
using System.Collections.Generic;
using Microsoft.CodeAnalysis.CSharp.Syntax;
using Microsoft.CodeAnalysis.CSharp.Test.Utilities;
using Microsoft.CodeAnalysis.Test.Utilities;
using System;
using Xunit;
namespace Microsoft.CodeAnalysis.CSharp.UnitTests
{
public class SyntaxTriviaListTests : CSharpTestBase
{
[Fact]
public void Equality()
{
var node1 = SyntaxFactory.Token(SyntaxKind.AbstractKeyword);
var node2 = SyntaxFactory.Token(SyntaxKind.VirtualKeyword);
EqualityTesting.AssertEqual(default(SyntaxTriviaList), default(SyntaxTriviaList));
EqualityTesting.AssertEqual(new SyntaxTriviaList(node1, node1.Node, 0, 0), new SyntaxTriviaList(node1, node1.Node, 0, 0));
EqualityTesting.AssertNotEqual(new SyntaxTriviaList(node1, node1.Node, 0, 1), new SyntaxTriviaList(node1, node1.Node, 0, 0));
EqualityTesting.AssertNotEqual(new SyntaxTriviaList(node1, node2.Node, 0, 0), new SyntaxTriviaList(node1, node1.Node, 0, 0));
EqualityTesting.AssertNotEqual(new SyntaxTriviaList(node2, node1.Node, 0, 0), new SyntaxTriviaList(node1, node1.Node, 0, 0));
// position not considered:
EqualityTesting.AssertEqual(new SyntaxTriviaList(node1, node1.Node, 1, 0), new SyntaxTriviaList(node1, node1.Node, 0, 0));
}
[Fact]
public void Reverse_Equality()
{
var node1 = SyntaxFactory.Token(SyntaxKind.AbstractKeyword);
var node2 = SyntaxFactory.Token(SyntaxKind.VirtualKeyword);
EqualityTesting.AssertEqual(default(SyntaxTriviaList.Reversed), default(SyntaxTriviaList.Reversed));
EqualityTesting.AssertEqual(new SyntaxTriviaList(node1, node1.Node, 0, 0).Reverse(), new SyntaxTriviaList(node1, node1.Node, 0, 0).Reverse());
EqualityTesting.AssertNotEqual(new SyntaxTriviaList(node1, node1.Node, 0, 1).Reverse(), new SyntaxTriviaList(node1, node1.Node, 0, 0).Reverse());
EqualityTesting.AssertNotEqual(new SyntaxTriviaList(node1, node2.Node, 0, 0).Reverse(), new SyntaxTriviaList(node1, node1.Node, 0, 0).Reverse());
EqualityTesting.AssertNotEqual(new SyntaxTriviaList(node2, node1.Node, 0, 0).Reverse(), new SyntaxTriviaList(node1, node1.Node, 0, 0).Reverse());
// position not considered:
EqualityTesting.AssertEqual(new SyntaxTriviaList(node1, node1.Node, 1, 0).Reverse(), new SyntaxTriviaList(node1, node1.Node, 0, 0).Reverse());
}
[Fact]
public void TestAddInsertRemoveReplace()
{
var list = SyntaxFactory.ParseLeadingTrivia("/*A*//*B*//*C*/");
Assert.Equal(3, list.Count);
Assert.Equal("/*A*/", list[0].ToString());
Assert.Equal("/*B*/", list[1].ToString());
Assert.Equal("/*C*/", list[2].ToString());
Assert.Equal("/*A*//*B*//*C*/", list.ToFullString());
var elementA = list[0];
var elementB = list[1];
var elementC = list[2];
Assert.Equal(0, list.IndexOf(elementA));
Assert.Equal(1, list.IndexOf(elementB));
Assert.Equal(2, list.IndexOf(elementC));
var triviaD = SyntaxFactory.ParseLeadingTrivia("/*D*/")[0];
var triviaE = SyntaxFactory.ParseLeadingTrivia("/*E*/")[0];
var newList = list.Add(triviaD);
Assert.Equal(4, newList.Count);
Assert.Equal("/*A*//*B*//*C*//*D*/", newList.ToFullString());
newList = list.AddRange(new[] { triviaD, triviaE });
Assert.Equal(5, newList.Count);
Assert.Equal("/*A*//*B*//*C*//*D*//*E*/", newList.ToFullString());
newList = list.Insert(0, triviaD);
Assert.Equal(4, newList.Count);
Assert.Equal("/*D*//*A*//*B*//*C*/", newList.ToFullString());
newList = list.Insert(1, triviaD);
Assert.Equal(4, newList.Count);
Assert.Equal("/*A*//*D*//*B*//*C*/", newList.ToFullString());
newList = list.Insert(2, triviaD);
Assert.Equal(4, newList.Count);
Assert.Equal("/*A*//*B*//*D*//*C*/", newList.ToFullString());
newList = list.Insert(3, triviaD);
Assert.Equal(4, newList.Count);
Assert.Equal("/*A*//*B*//*C*//*D*/", newList.ToFullString());
newList = list.InsertRange(0, new[] { triviaD, triviaE });
Assert.Equal(5, newList.Count);
Assert.Equal("/*D*//*E*//*A*//*B*//*C*/", newList.ToFullString());
newList = list.InsertRange(1, new[] { triviaD, triviaE });
Assert.Equal(5, newList.Count);
Assert.Equal("/*A*//*D*//*E*//*B*//*C*/", newList.ToFullString());
newList = list.InsertRange(2, new[] { triviaD, triviaE });
Assert.Equal(5, newList.Count);
Assert.Equal("/*A*//*B*//*D*//*E*//*C*/", newList.ToFullString());
newList = list.InsertRange(3, new[] { triviaD, triviaE });
Assert.Equal(5, newList.Count);
Assert.Equal("/*A*//*B*//*C*//*D*//*E*/", newList.ToFullString());
newList = list.RemoveAt(0);
Assert.Equal(2, newList.Count);
Assert.Equal("/*B*//*C*/", newList.ToFullString());
newList = list.RemoveAt(list.Count - 1);
Assert.Equal(2, newList.Count);
Assert.Equal("/*A*//*B*/", newList.ToFullString());
newList = list.Remove(elementA);
Assert.Equal(2, newList.Count);
Assert.Equal("/*B*//*C*/", newList.ToFullString());
newList = list.Remove(elementB);
Assert.Equal(2, newList.Count);
Assert.Equal("/*A*//*C*/", newList.ToFullString());
newList = list.Remove(elementC);
Assert.Equal(2, newList.Count);
Assert.Equal("/*A*//*B*/", newList.ToFullString());
newList = list.Replace(elementA, triviaD);
Assert.Equal(3, newList.Count);
Assert.Equal("/*D*//*B*//*C*/", newList.ToFullString());
newList = list.Replace(elementB, triviaD);
Assert.Equal(3, newList.Count);
Assert.Equal("/*A*//*D*//*C*/", newList.ToFullString());
newList = list.Replace(elementC, triviaD);
Assert.Equal(3, newList.Count);
Assert.Equal("/*A*//*B*//*D*/", newList.ToFullString());
newList = list.ReplaceRange(elementA, new[] { triviaD, triviaE });
Assert.Equal(4, newList.Count);
Assert.Equal("/*D*//*E*//*B*//*C*/", newList.ToFullString());
newList = list.ReplaceRange(elementB, new[] { triviaD, triviaE });
Assert.Equal(4, newList.Count);
Assert.Equal("/*A*//*D*//*E*//*C*/", newList.ToFullString());
newList = list.ReplaceRange(elementC, new[] { triviaD, triviaE });
Assert.Equal(4, newList.Count);
Assert.Equal("/*A*//*B*//*D*//*E*/", newList.ToFullString());
newList = list.ReplaceRange(elementA, new SyntaxTrivia[] { });
Assert.Equal(2, newList.Count);
Assert.Equal("/*B*//*C*/", newList.ToFullString());
newList = list.ReplaceRange(elementB, new SyntaxTrivia[] { });
Assert.Equal(2, newList.Count);
Assert.Equal("/*A*//*C*/", newList.ToFullString());
newList = list.ReplaceRange(elementC, new SyntaxTrivia[] { });
Assert.Equal(2, newList.Count);
Assert.Equal("/*A*//*B*/", newList.ToFullString());
Assert.Equal(-1, list.IndexOf(triviaD));
Assert.Throws<ArgumentOutOfRangeException>(() => list.Insert(-1, triviaD));
Assert.Throws<ArgumentOutOfRangeException>(() => list.Insert(list.Count + 1, triviaD));
Assert.Throws<ArgumentOutOfRangeException>(() => list.InsertRange(-1, new[] { triviaD }));
Assert.Throws<ArgumentOutOfRangeException>(() => list.InsertRange(list.Count + 1, new[] { triviaD }));
Assert.Throws<ArgumentOutOfRangeException>(() => list.RemoveAt(-1));
Assert.Throws<ArgumentOutOfRangeException>(() => list.RemoveAt(list.Count));
Assert.Throws<ArgumentOutOfRangeException>(() => list.Add(default(SyntaxTrivia)));
Assert.Throws<ArgumentOutOfRangeException>(() => list.Insert(0, default(SyntaxTrivia)));
Assert.Throws<ArgumentNullException>(() => list.AddRange((IEnumerable<SyntaxTrivia>)null));
Assert.Throws<ArgumentNullException>(() => list.InsertRange(0, (IEnumerable<SyntaxTrivia>)null));
Assert.Throws<ArgumentNullException>(() => list.ReplaceRange(elementA, (IEnumerable<SyntaxTrivia>)null));
}
[Fact]
public void TestAddInsertRemoveReplaceOnEmptyList()
{
DoTestAddInsertRemoveReplaceOnEmptyList(SyntaxFactory.ParseLeadingTrivia("/*A*/").RemoveAt(0));
DoTestAddInsertRemoveReplaceOnEmptyList(default(SyntaxTriviaList));
}
private void DoTestAddInsertRemoveReplaceOnEmptyList(SyntaxTriviaList list)
{
Assert.Equal(0, list.Count);
var triviaD = SyntaxFactory.ParseLeadingTrivia("/*D*/")[0];
var triviaE = SyntaxFactory.ParseLeadingTrivia("/*E*/")[0];
var newList = list.Add(triviaD);
Assert.Equal(1, newList.Count);
Assert.Equal("/*D*/", newList.ToFullString());
newList = list.AddRange(new[] { triviaD, triviaE });
Assert.Equal(2, newList.Count);
Assert.Equal("/*D*//*E*/", newList.ToFullString());
newList = list.Insert(0, triviaD);
Assert.Equal(1, newList.Count);
Assert.Equal("/*D*/", newList.ToFullString());
newList = list.InsertRange(0, new[] { triviaD, triviaE });
Assert.Equal(2, newList.Count);
Assert.Equal("/*D*//*E*/", newList.ToFullString());
newList = list.Remove(triviaD);
Assert.Equal(0, newList.Count);
Assert.Equal(-1, list.IndexOf(triviaD));
Assert.Throws<ArgumentOutOfRangeException>(() => list.RemoveAt(0));
Assert.Throws<ArgumentOutOfRangeException>(() => list.Insert(1, triviaD));
Assert.Throws<ArgumentOutOfRangeException>(() => list.Insert(-1, triviaD));
Assert.Throws<ArgumentOutOfRangeException>(() => list.InsertRange(1, new[] { triviaD }));
Assert.Throws<ArgumentOutOfRangeException>(() => list.InsertRange(-1, new[] { triviaD }));
Assert.Throws<ArgumentOutOfRangeException>(() => list.Replace(triviaD, triviaE));
Assert.Throws<ArgumentOutOfRangeException>(() => list.ReplaceRange(triviaD, new[] { triviaE }));
Assert.Throws<ArgumentOutOfRangeException>(() => list.Add(default(SyntaxTrivia)));
Assert.Throws<ArgumentOutOfRangeException>(() => list.Insert(0, default(SyntaxTrivia)));
Assert.Throws<ArgumentNullException>(() => list.AddRange((IEnumerable<SyntaxTrivia>)null));
Assert.Throws<ArgumentNullException>(() => list.InsertRange(0, (IEnumerable<SyntaxTrivia>)null));
}
[Fact]
public void Extensions()
{
var list = SyntaxFactory.ParseLeadingTrivia("/*A*//*B*//*C*/");
Assert.Equal(0, list.IndexOf(SyntaxKind.MultiLineCommentTrivia));
Assert.True(list.Any(SyntaxKind.MultiLineCommentTrivia));
Assert.Equal(-1, list.IndexOf(SyntaxKind.SingleLineCommentTrivia));
Assert.False(list.Any(SyntaxKind.SingleLineCommentTrivia));
}
}
}
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