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feat: Added GetFileNameWithoutExtension() extension method to IFileInfo#74

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feat: Added GetFileNameWithoutExtension() extension method to IFileInfo #74

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9e091c0
feat: Added GetFileNameWithoutExtension() extension method to IFileInfo
Blaisor Jul 12, 2024
a02b139
feat: Added tests for IFileInfoExtensions.GetFileNameWithoutExtension
Blaisor Sep 6, 2025
3348c36
Added extra test case to FileInfoExtensionsTests.cs
Blaisor Jan 17, 2026
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6 changes: 6 additions & 0 deletions src/System.IO.Abstractions.Extensions/IFileInfoExtensions.cs
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Original file line numberDiff line numberDiff line change
Expand Up@@ -165,6 +165,12 @@ public static void WriteAllText(this IFileInfo file, string contents)
file.FileSystem.File.WriteAllText(file.FullName, contents);
}

/// <inheritdoc cref="IPath.GetFileNameWithoutExtension(string?)"/>
public static string GetFileNameWithoutExtension(this IFileInfo file)

@gigi81gigi81Jan 3, 2026

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Suggested change
publicstaticstringGetFileNameWithoutExtension(thisIFileInfofile)
publicstaticstringNameWithoutExtension(thisIFileInfofile)

@BlaisorBlaisorJan 17, 2026

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I'd go with GetFileNameWithoutExtension, as it starts with a verb. However, if we used C# 14, we could add a nice extension property with the name NameWithoutExtension.

{
return file.FileSystem.Path.GetFileNameWithoutExtension(file.Name);
}

private static FileMode GetWriteFileMode(IFileInfo info, bool overwrite)
{
if (!overwrite && info.Exists)
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18 changes: 18 additions & 0 deletions tests/System.IO.Abstractions.Extensions.Tests/FileInfoExtensionsTests.cs
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Expand Up@@ -290,5 +290,23 @@ public void AppendText_FileExistsAndHasText_LinesAreAppended(params string[] app
Assert.AreEqual(expected[i], actual[i]);
}
}

[TestCase("test.extension", "test")]
[TestCase("noextension", "noextension")]
[TestCase(".extensiononly", "")]
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[TestCase("double.dot.ext", "double.dot")]
public void GetFileNameWithoutExtension_WithValidFileName_ReturnsNameWithoutExtension(string fileName, string expectedName)

@gigi81gigi81Jan 3, 2026

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Suggested change
publicvoidGetFileNameWithoutExtension_WithValidFileName_ReturnsNameWithoutExtension(stringfileName,stringexpectedName)
publicvoidNameWithoutExtension_WithValidFileName_ReturnsNameWithoutExtension(stringfileName,stringexpectedName)

{
//arrange
var fs = new FileSystem();
var current = fs.DirectoryInfo.New(fs.Directory.GetCurrentDirectory());
var file = current.File(fileName);

//act
var name = file.GetFileNameWithoutExtension();

@gigi81gigi81Jan 3, 2026

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Suggested change
varname=file.GetFileNameWithoutExtension();
varname=file.NameWithoutExtension();


//assert
Assert.AreEqual(expectedName, name);
}
}
}