Fixing regression on csharpier ignore that deleted empty lines

closes #879

Src/CSharpier.Tests/CSharpierIgnoreTests.cs

@@ -0,0 +1,75 @@
+using NUnit.Framework;
+
+namespace CSharpier.Tests;
+
+using CSharpier.SyntaxPrinter;
+using FluentAssertions;
+
+[TestFixture]
+public class CSharpierIgnoreTests
+{
+ [Test]
+ public void KeepLineBreaks()
+ {
+ var testCode =
+ @"
+1
+
+2
+";
+
+ var result = PrintWithoutFormatting(testCode);
+
+ result.Should().Be(testCode);
+ }
+
+ [Test]
+ public void TrimTrailing()
+ {
+ var testCode =
+ @"1 
+2";
+
+ var result = PrintWithoutFormatting(testCode);
+
+ result
+ .Should()
+ .Be(
+ @"1
+2"
+ );
+ }
+
+ [Test]
+ public void FullProperty()
+ {
+ var testCode =
+ @"
+// csharpier-ignore
+public string Example
+{
+ get
+ {
+ if (_example is not null)
+ return _example;
+
+ var number = Random.Shared.Next();
+
+ return _example = number.ToString();
+ }
+}
+";
+
+ var result = PrintWithoutFormatting(testCode);
+
+ result.Should().Be(testCode);
+ }
+
+ private string PrintWithoutFormatting(string code)
+ {
+ return CSharpierIgnore.PrintWithoutFormatting(
+ code,
+ new FormattingContext { LineEnding = Environment.NewLine }
+ );
+ }
+}

Src/CSharpier.Tests/FormattingTests/TestFiles/cs/CSharpierIgnore.expected.test

@@ -169,3 +169,20 @@ public class AttributesAndMethods
  // csharpier-ignore - just the method
  void MethodThatShouldNotFormat( ) { }
 }
+
+public class KeepLineBreaks
+{
+ // csharpier-ignore
+ public string Example
+ {
+ get
+ {
+ if (_example is not null)
+ return _example;
+
+ var number = Random.Shared.Next();
+
+ return _example = number.ToString();
+ }
+ }
+}

Src/CSharpier.Tests/FormattingTests/TestFiles/cs/CSharpierIgnore.test

@@ -169,3 +169,20 @@ public class AttributesAndMethods
  // csharpier-ignore - just the method
  void MethodThatShouldNotFormat( ) { }
 }
+
+public class KeepLineBreaks
+{
+ // csharpier-ignore
+ public string Example
+ {
+ get
+ {
+ if (_example is not null)
+ return _example;
+
+ var number = Random.Shared.Next();
+
+ return _example = number.ToString();
+ }
+ }
+}

Src/CSharpier/SyntaxPrinter/CSharpierIgnore.cs

@@ -76,8 +76,13 @@ FormattingContext context
  }
 
  public static string PrintWithoutFormatting(SyntaxNode syntaxNode, FormattingContext context)
+ {
+ return PrintWithoutFormatting(syntaxNode.GetText().ToString(), context);
+ }
+
+ public static string PrintWithoutFormatting(string code, FormattingContext context)
  {
  // trim trailing whitespace + replace only existing line endings
- return Regex.Replace(syntaxNode.GetText().ToString(), @"\s*(\r\n?|\n)", context.LineEnding);
+ return Regex.Replace(code, @"[\t\v\f ]*(\r\n?|\n)", context.LineEnding);
  }
 }