feat: Added GetFileNameWithoutExtension() extension method to IFileInfo

src/System.IO.Abstractions.Extensions/IFileInfoExtensions.cs

@@ -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)
+        {
+            return file.FileSystem.Path.GetFileNameWithoutExtension(file.Name);
+        }
+
         private static FileMode GetWriteFileMode(IFileInfo info, bool overwrite)
         {
             if (!overwrite && info.Exists)

tests/System.IO.Abstractions.Extensions.Tests/FileInfoExtensionsTests.cs

@@ -290,5 +290,22 @@ public void AppendText_FileExistsAndHasText_LinesAreAppended(params string[] app
                 Assert.AreEqual(expected[i], actual[i]);
             }
         }
+
+        [TestCase("test.extension", "test")]
+        [TestCase("noextension", "noextension")]
+        [TestCase(".extensiononly", "")]
+        public void GetFileNameWithoutExtension_WithValidFileName_ReturnsNameWithoutExtension(string fileName, string expectedName)
+        {
+            //arrange
+            var fs = new FileSystem();
+            var current = fs.DirectoryInfo.New(fs.Directory.GetCurrentDirectory());
+            var file = current.File(fileName);
+
+            //act
+            var name = file.GetFileNameWithoutExtension();
+
+            //assert
+            Assert.AreEqual(expectedName, name);
+        }
     }
 }