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// Copyright (c) Microsoft Corporation. All rights reserved. See License.txt in the project root for license information.
using System.Web.Razor.Text;
using Xunit;
namespace System.Web.Razor.Test.Text
{
public class SourceLocationTrackerTest
{
private static readonly SourceLocation TestStartLocation = new SourceLocation(10, 42, 45);
[Fact]
public void ConstructorSetsCurrentLocationToZero()
{
Assert.Equal(SourceLocation.Zero, new SourceLocationTracker().CurrentLocation);
}
[Fact]
public void ConstructorWithSourceLocationSetsCurrentLocationToSpecifiedValue()
{
SourceLocation loc = new SourceLocation(10, 42, 4);
Assert.Equal(loc, new SourceLocationTracker(loc).CurrentLocation);
}
[Fact]
public void UpdateLocationAdvancesAbsoluteIndexOnNonNewlineCharacter()
{
// Arrange
SourceLocationTracker tracker = new SourceLocationTracker(TestStartLocation);
// Act
tracker.UpdateLocation('f', 'o');
// Assert
Assert.Equal(11, tracker.CurrentLocation.AbsoluteIndex);
}
[Fact]
public void UpdateLocationAdvancesCharacterIndexOnNonNewlineCharacter()
{
// Arrange
SourceLocationTracker tracker = new SourceLocationTracker(TestStartLocation);
// Act
tracker.UpdateLocation('f', 'o');
// Assert
Assert.Equal(46, tracker.CurrentLocation.CharacterIndex);
}
[Fact]
public void UpdateLocationDoesNotAdvanceLineIndexOnNonNewlineCharacter()
{
// Arrange
SourceLocationTracker tracker = new SourceLocationTracker(TestStartLocation);
// Act
tracker.UpdateLocation('f', 'o');
// Assert
Assert.Equal(42, tracker.CurrentLocation.LineIndex);
}
[Fact]
public void UpdateLocationAdvancesLineIndexOnSlashN()
{
// Arrange
SourceLocationTracker tracker = new SourceLocationTracker(TestStartLocation);
// Act
tracker.UpdateLocation('\n', 'o');
// Assert
Assert.Equal(43, tracker.CurrentLocation.LineIndex);
}
[Fact]
public void UpdateLocationAdvancesAbsoluteIndexOnSlashN()
{
// Arrange
SourceLocationTracker tracker = new SourceLocationTracker(TestStartLocation);
// Act
tracker.UpdateLocation('\n', 'o');
// Assert
Assert.Equal(11, tracker.CurrentLocation.AbsoluteIndex);
}
[Fact]
public void UpdateLocationResetsCharacterIndexOnSlashN()
{
// Arrange
SourceLocationTracker tracker = new SourceLocationTracker(TestStartLocation);
// Act
tracker.UpdateLocation('\n', 'o');
// Assert
Assert.Equal(0, tracker.CurrentLocation.CharacterIndex);
}
[Fact]
public void UpdateLocationAdvancesLineIndexOnSlashRFollowedByNonNewlineCharacter()
{
// Arrange
SourceLocationTracker tracker = new SourceLocationTracker(TestStartLocation);
// Act
tracker.UpdateLocation('\r', 'o');
// Assert
Assert.Equal(43, tracker.CurrentLocation.LineIndex);
}
[Fact]
public void UpdateLocationAdvancesAbsoluteIndexOnSlashRFollowedByNonNewlineCharacter()
{
// Arrange
SourceLocationTracker tracker = new SourceLocationTracker(TestStartLocation);
// Act
tracker.UpdateLocation('\r', 'o');
// Assert
Assert.Equal(11, tracker.CurrentLocation.AbsoluteIndex);
}
[Fact]
public void UpdateLocationResetsCharacterIndexOnSlashRFollowedByNonNewlineCharacter()
{
// Arrange
SourceLocationTracker tracker = new SourceLocationTracker(TestStartLocation);
// Act
tracker.UpdateLocation('\r', 'o');
// Assert
Assert.Equal(0, tracker.CurrentLocation.CharacterIndex);
}
[Fact]
public void UpdateLocationDoesNotAdvanceLineIndexOnSlashRFollowedBySlashN()
{
// Arrange
SourceLocationTracker tracker = new SourceLocationTracker(TestStartLocation);
// Act
tracker.UpdateLocation('\r', '\n');
// Assert
Assert.Equal(42, tracker.CurrentLocation.LineIndex);
}
[Fact]
public void UpdateLocationAdvancesAbsoluteIndexOnSlashRFollowedBySlashN()
{
// Arrange
SourceLocationTracker tracker = new SourceLocationTracker(TestStartLocation);
// Act
tracker.UpdateLocation('\r', '\n');
// Assert
Assert.Equal(11, tracker.CurrentLocation.AbsoluteIndex);
}
[Fact]
public void UpdateLocationAdvancesCharacterIndexOnSlashRFollowedBySlashN()
{
// Arrange
SourceLocationTracker tracker = new SourceLocationTracker(TestStartLocation);
// Act
tracker.UpdateLocation('\r', '\n');
// Assert
Assert.Equal(46, tracker.CurrentLocation.CharacterIndex);
}
}
}
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