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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.
#nullable disable
using System.Collections.Generic;
using System.Linq;
using Microsoft.AspNetCore.Razor.Language.Syntax.InternalSyntax;
using Xunit;
namespace Microsoft.AspNetCore.Razor.Language.Legacy;
public class ImplicitExpressionEditHandlerTest
{
[Fact]
public void IsAcceptableDeletionInBalancedParenthesis_DeletionStartNotInBalancedParenthesis_ReturnsFalse()
{
// Arrange
var span = GetSyntaxNode(SourceLocation.Zero, "(Hell)(o)");
var change = new SourceChange(new SourceSpan(6, 1), string.Empty);
// Act
var result = ImplicitExpressionEditHandler.IsAcceptableDeletionInBalancedParenthesis(span, change);
// Assert
Assert.False(result);
}
[Fact]
public void IsAcceptableDeletionInBalancedParenthesis_DeletionEndNotInBalancedParenthesis_ReturnsFalse()
{
// Arrange
var span = GetSyntaxNode(SourceLocation.Zero, "(Hell)(o)");
var change = new SourceChange(new SourceSpan(5, 1), string.Empty);
// Act
var result = ImplicitExpressionEditHandler.IsAcceptableDeletionInBalancedParenthesis(span, change);
// Assert
Assert.False(result);
}
[Fact]
public void IsAcceptableDeletionInBalancedParenthesis_DeletionOverlapsBalancedParenthesis_ReturnsFalse()
{
// Arrange
var span = GetSyntaxNode(SourceLocation.Zero, "(Hell)(o)");
var change = new SourceChange(new SourceSpan(5, 2), string.Empty);
// Act
var result = ImplicitExpressionEditHandler.IsAcceptableDeletionInBalancedParenthesis(span, change);
// Assert
Assert.False(result);
}
[Fact]
public void IsAcceptableDeletionInBalancedParenthesis_DeletionDoesNotImpactBalancedParenthesis_ReturnsTrue()
{
// Arrange
var span = GetSyntaxNode(SourceLocation.Zero, "(H(ell)o)");
var change = new SourceChange(new SourceSpan(3, 3), string.Empty);
// Act
var result = ImplicitExpressionEditHandler.IsAcceptableDeletionInBalancedParenthesis(span, change);
// Assert
Assert.True(result);
}
[Theory]
[InlineData("(")]
[InlineData(")")]
public void IsAcceptableInsertionInBalancedParenthesis_ReturnsFalseIfChangeIsParenthesis(string changeText)
{
// Arrange
var change = new SourceChange(0, 1, changeText);
// Act
var result = ImplicitExpressionEditHandler.IsAcceptableInsertionInBalancedParenthesis(null, change);
// Assert
Assert.False(result);
}
[Fact]
public void TryUpdateCountFromContent_SingleLeftParenthesis_CountsCorrectly()
{
// Arrange
var content = "(";
var count = 0;
// Act
var result = ImplicitExpressionEditHandler.TryUpdateCountFromContent(content, ref count);
// Assert
Assert.True(result);
Assert.Equal(1, count);
}
[Fact]
public void TryUpdateCountFromContent_SingleRightParenthesis_CountsCorrectly()
{
// Arrange
var content = ")";
var count = 2;
// Act
var result = ImplicitExpressionEditHandler.TryUpdateCountFromContent(content, ref count);
// Assert
Assert.True(result);
Assert.Equal(1, count);
}
[Fact]
public void TryUpdateCountFromContent_CorrectCount_ReturnsTrue()
{
// Arrange
var content = "\"(()(";
var count = 0;
// Act
var result = ImplicitExpressionEditHandler.TryUpdateCountFromContent(content, ref count);
// Assert
Assert.True(result);
Assert.Equal(2, count);
}
[Fact]
public void TryUpdateCountFromContent_ExistingCountAndNonParenthesisContent_ReturnsTrue()
{
// Arrange
var content = "'(abc)de)fg";
var count = 1;
// Act
var result = ImplicitExpressionEditHandler.TryUpdateCountFromContent(content, ref count);
// Assert
Assert.True(result);
Assert.Equal(0, count);
}
[Fact]
public void TryUpdateCountFromContent_InvalidParenthesis_ReturnsFalse()
{
// Arrange
var content = "'())))))";
var count = 4;
// Act
var result = ImplicitExpressionEditHandler.TryUpdateCountFromContent(content, ref count);
// Assert
Assert.False(result);
Assert.Equal(4, count);
}
[Fact]
public void TryUpdateBalanceCount_SingleLeftParenthesis_CountsCorrectly()
{
// Arrange
var token = Syntax.SyntaxFactory.Token(SyntaxKind.LeftParenthesis, "(");
var count = 0;
// Act
var result = ImplicitExpressionEditHandler.TryUpdateBalanceCount(token, ref count);
// Assert
Assert.True(result);
Assert.Equal(1, count);
}
[Fact]
public void TryUpdateBalanceCount_SingleRightParenthesis_CountsCorrectly()
{
// Arrange
var token = Syntax.SyntaxFactory.Token(SyntaxKind.RightParenthesis, ")");
var count = 2;
// Act
var result = ImplicitExpressionEditHandler.TryUpdateBalanceCount(token, ref count);
// Assert
Assert.True(result);
Assert.Equal(1, count);
}
[Fact]
public void TryUpdateBalanceCount_IncompleteStringLiteral_CountsCorrectly()
{
// Arrange
var token = Syntax.SyntaxFactory.Token(SyntaxKind.StringLiteral, "\"((");
var count = 2;
// Act
var result = ImplicitExpressionEditHandler.TryUpdateBalanceCount(token, ref count);
// Assert
Assert.True(result);
Assert.Equal(4, count);
}
[Fact]
public void TryUpdateBalanceCount_IncompleteCharacterLiteral_CountsCorrectly()
{
// Arrange
var token = Syntax.SyntaxFactory.Token(SyntaxKind.CharacterLiteral, "'((");
var count = 2;
// Act
var result = ImplicitExpressionEditHandler.TryUpdateBalanceCount(token, ref count);
// Assert
Assert.True(result);
Assert.Equal(4, count);
}
[Fact]
public void TryUpdateBalanceCount_CompleteStringLiteral_CountsCorrectly()
{
// Arrange
var token = Syntax.SyntaxFactory.Token(SyntaxKind.StringLiteral, "\"((\"");
var count = 2;
// Act
var result = ImplicitExpressionEditHandler.TryUpdateBalanceCount(token, ref count);
// Assert
Assert.True(result);
Assert.Equal(2, count);
}
[Fact]
public void TryUpdateBalanceCount_CompleteCharacterLiteral_CountsCorrectly()
{
// Arrange
var token = Syntax.SyntaxFactory.Token(SyntaxKind.CharacterLiteral, "'('");
var count = 2;
// Act
var result = ImplicitExpressionEditHandler.TryUpdateBalanceCount(token, ref count);
// Assert
Assert.True(result);
Assert.Equal(2, count);
}
[Fact]
public void TryUpdateBalanceCount_InvalidParenthesis_ReturnsFalse()
{
// Arrange
var token = Syntax.SyntaxFactory.Token(SyntaxKind.RightParenthesis, ")");
var count = 0;
// Act
var result = ImplicitExpressionEditHandler.TryUpdateBalanceCount(token, ref count);
// Assert
Assert.False(result);
Assert.Equal(0, count);
}
[Fact]
public void TryUpdateBalanceCount_InvalidParenthesisStringLiteral_ReturnsFalse()
{
// Arrange
var token = Syntax.SyntaxFactory.Token(SyntaxKind.StringLiteral, "\")");
var count = 0;
// Act
var result = ImplicitExpressionEditHandler.TryUpdateBalanceCount(token, ref count);
// Assert
Assert.False(result);
Assert.Equal(0, count);
}
[Fact]
public void TryUpdateBalanceCount_InvalidParenthesisCharacterLiteral_ReturnsFalse()
{
// Arrange
var token = Syntax.SyntaxFactory.Token(SyntaxKind.CharacterLiteral, "')");
var count = 0;
// Act
var result = ImplicitExpressionEditHandler.TryUpdateBalanceCount(token, ref count);
// Assert
Assert.False(result);
Assert.Equal(0, count);
}
[Fact]
public void ContainsPosition_AtStartOfToken_ReturnsTrue()
{
// Arrange
var token = GetTokens(new SourceLocation(4, 1, 2), "hello").Single();
// Act
var result = ImplicitExpressionEditHandler.ContainsPosition(4, token);
// Assert
Assert.True(result);
}
[Fact]
public void ContainsPosition_InsideOfToken_ReturnsTrue()
{
// Arrange
var token = GetTokens(new SourceLocation(4, 1, 2), "hello").Single();
// Act
var result = ImplicitExpressionEditHandler.ContainsPosition(6, token);
// Assert
Assert.True(result);
}
[Fact]
public void ContainsPosition_AtEndOfToken_ReturnsFalse()
{
// Arrange
var token = GetTokens(new SourceLocation(4, 1, 2), "hello").Single();
// Act
var result = ImplicitExpressionEditHandler.ContainsPosition(9, token);
// Assert
Assert.False(result);
}
[Theory]
[InlineData(10)]
[InlineData(2)]
public void ContainsPosition_OutsideOfToken_ReturnsFalse(int position)
{
// Arrange
var token = GetTokens(new SourceLocation(4, 1, 2), "hello").Single();
// Act
var result = ImplicitExpressionEditHandler.ContainsPosition(position, token);
// Assert
Assert.False(result);
}
[Fact]
public void IsInsideParenthesis_SurroundedByCompleteParenthesis_ReturnsFalse()
{
// Arrange
var tokens = GetTokens(SourceLocation.Zero, "(hello)point(world)");
// Act
var result = ImplicitExpressionEditHandler.IsInsideParenthesis(9, tokens);
// Assert
Assert.False(result);
}
[Fact]
public void IsInsideParenthesis_InvalidParenthesis_ReturnsFalse()
{
// Arrange
var tokens = GetTokens(SourceLocation.Zero, "(hello))point)");
// Act
var result = ImplicitExpressionEditHandler.IsInsideParenthesis(10, tokens);
// Assert
Assert.False(result);
}
[Fact]
public void IsInsideParenthesis_NoParenthesis_ReturnsFalse()
{
// Arrange
var tokens = GetTokens(SourceLocation.Zero, "Hello World");
// Act
var result = ImplicitExpressionEditHandler.IsInsideParenthesis(3, tokens);
// Assert
Assert.False(result);
}
[Fact]
public void IsInsideParenthesis_InBalancedParenthesis_ReturnsTrue()
{
// Arrange
var tokens = GetTokens(SourceLocation.Zero, "Foo(GetValue(), DoSomething(point))");
// Act
var result = ImplicitExpressionEditHandler.IsInsideParenthesis(30, tokens);
// Assert
Assert.True(result);
}
[Theory]
[InlineData("(")]
[InlineData(")")]
public void IsAcceptableInsertionInBalancedParenthesis_InsertingParenthesis_ReturnsFalse(string text)
{
// Arrange
var span = GetSyntaxNode(SourceLocation.Zero, "(Hello World)");
var change = new SourceChange(new SourceSpan(3, 0), text);
// Act
var result = ImplicitExpressionEditHandler.IsAcceptableInsertionInBalancedParenthesis(span, change);
// Assert
Assert.False(result);
}
[Fact]
public void IsAcceptableInsertionInBalancedParenthesis_UnbalancedParenthesis_ReturnsFalse()
{
// Arrange
var span = GetSyntaxNode(SourceLocation.Zero, "(Hello");
var change = new SourceChange(new SourceSpan(6, 0), " World");
// Act
var result = ImplicitExpressionEditHandler.IsAcceptableInsertionInBalancedParenthesis(span, change);
// Assert
Assert.False(result);
}
[Fact]
public void IsAcceptableInsertionInBalancedParenthesis_BalancedParenthesis_ReturnsTrue()
{
// Arrange
var span = GetSyntaxNode(SourceLocation.Zero, "(Hello)");
var change = new SourceChange(new SourceSpan(6, 0), " World");
// Act
var result = ImplicitExpressionEditHandler.IsAcceptableInsertionInBalancedParenthesis(span, change);
// Assert
Assert.True(result);
}
private static Syntax.MarkupTextLiteralSyntax GetSyntaxNode(SourceLocation start, string content)
{
var builder = SyntaxListBuilder<SyntaxToken>.Create();
var tokens = NativeCSharpLanguageCharacteristics.Instance.TokenizeString(content).ToArray();
foreach (var token in tokens)
{
builder.Add(token);
}
var node = SyntaxFactory.MarkupTextLiteral(builder.ToList(), SpanChunkGenerator.Null, editHandler: null)
.CreateRed(parent: null, position: start.AbsoluteIndex);
return (Syntax.MarkupTextLiteralSyntax)node;
}
private static Syntax.SyntaxTokenList GetTokens(SourceLocation start, string content)
{
var parent = GetSyntaxNode(start, content);
return parent.LiteralTokens;
}
}
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