Fix file extension detection error (#453)

Source/AaxDecrypter/AaxcDownloadMultiConverter.cs

@@ -203,7 +203,8 @@ That naming may not be desirable for everyone, but it's an easy change to instea
 		private FileStream createOutputFileStream(MultiConvertFileProperties multiConvertFileProperties)
 		{
 			var fileName = DownloadOptions.GetMultipartFileName(multiConvertFileProperties);
-			fileName = FileUtility.GetValidFilename(fileName, DownloadOptions.ReplacementCharacters);
+			var extension = Path.GetExtension(fileName);
+			fileName = FileUtility.GetValidFilename(fileName, DownloadOptions.ReplacementCharacters, extension);
 
 			multiPartFilePaths.Add(fileName);
 

Source/AaxDecrypter/AudiobookDownloadBase.cs

@@ -93,7 +93,7 @@ namespace AaxDecrypter
 			try
 			{
 				var path = Path.ChangeExtension(OutputFileName, ".cue");
-				path = FileUtility.GetValidFilename(path, DownloadOptions.ReplacementCharacters);
+				path = FileUtility.GetValidFilename(path, DownloadOptions.ReplacementCharacters, ".cue");
 				File.WriteAllText(path, Cue.CreateContents(Path.GetFileName(OutputFileName), DownloadOptions.ChapterInfo));
 				OnFileCreated(path);
 			}

Source/FileManager/FileNamingTemplate.cs

@@ -13,7 +13,7 @@ namespace FileManager
 		public FileNamingTemplate(string template) : base(template) { }
 
 		/// <summary>Generate a valid path for this file or directory</summary>
-		public LongPath GetFilePath(ReplacementCharacters replacements, bool returnFirstExisting = false)
+		public LongPath GetFilePath(ReplacementCharacters replacements, string fileExtension, bool returnFirstExisting = false)
 		{
 			string fileName = 
 				Template.EndsWith(Path.DirectorySeparatorChar) || Template.EndsWith(Path.AltDirectorySeparatorChar) ?
@@ -44,7 +44,6 @@ namespace FileManager
 			var fileNamePart = pathParts[^1];
 			pathParts.Remove(fileNamePart);
 
-			var fileExtension = Path.GetExtension(fileNamePart);
 			fileNamePart = fileNamePart[..^fileExtension.Length];
 
 			LongPath directory = Path.Join(pathParts.Select(p => replaceFileName(p, paramReplacements, LongPath.MaxFilenameLength)).ToArray());
@@ -56,6 +55,7 @@ namespace FileManager
 			.GetValidFilename(
 				Path.Join(directory, replaceFileName(fileNamePart, paramReplacements, LongPath.MaxFilenameLength - fileExtension.Length - 5)) + fileExtension,
 				replacements,
+				fileExtension,
 				returnFirstExisting
 				);
 		}

Source/FileManager/FileUtility.cs

@@ -49,9 +49,11 @@ namespace FileManager
 		/// <br/>- ensure uniqueness
 		/// <br/>- enforce max file length
 		/// </summary>
-		public static LongPath GetValidFilename(LongPath path, ReplacementCharacters replacements, bool returnFirstExisting = false)
+		public static LongPath GetValidFilename(LongPath path, ReplacementCharacters replacements, string fileExtension, bool returnFirstExisting = false)
 		{
 			ArgumentValidator.EnsureNotNull(path, nameof(path));
+			ArgumentValidator.EnsureNotNull(fileExtension, nameof(fileExtension));
+			fileExtension = GetStandardizedExtension(fileExtension);
 
 			// remove invalid chars
 			path = GetSafePath(path, replacements);
@@ -60,21 +62,20 @@ namespace FileManager
 			var dir = Path.GetDirectoryName(path);
 			dir = dir?.TruncateFilename(LongPath.MaxDirectoryLength) ?? string.Empty;
 
-			var extension = Path.GetExtension(path);
+			var fileName = Path.GetFileName(path);
+			var extIndex = fileName.LastIndexOf(fileExtension, StringComparison.OrdinalIgnoreCase);
+			var filenameWithoutExtension = extIndex >= 0 ? fileName.Remove(extIndex, fileExtension.Length) : fileName;
+			var fileStem
+				= Path.Combine(dir, filenameWithoutExtension.TruncateFilename(LongPath.MaxFilenameLength - fileExtension.Length))
+				.TruncateFilename(LongPath.MaxPathLength - fileExtension.Length);
 
-			var filename = Path.GetFileNameWithoutExtension(path).TruncateFilename(LongPath.MaxFilenameLength - extension.Length);
+			var fullfilename = removeInvalidWhitespace(fileStem) + fileExtension;
-			var fileStem = Path.Combine(dir, filename);
-
-
-			var fullfilename = fileStem.TruncateFilename(LongPath.MaxPathLength - extension.Length) + extension;
-
-			fullfilename = removeInvalidWhitespace(fullfilename);
 
 			var i = 0;
 			while (File.Exists(fullfilename) && !returnFirstExisting)
 			{
 				var increm = $" ({++i})";
-				fullfilename = fileStem.TruncateFilename(LongPath.MaxPathLength - increm.Length - extension.Length) + increm + extension;
+				fullfilename = fileStem.TruncateFilename(LongPath.MaxPathLength - increm.Length - fileExtension.Length) + increm + fileExtension;
 			}
 
 			return fullfilename;
@@ -152,7 +153,8 @@ namespace FileManager
 		/// </summary>
 		public static string SaferMoveToValidPath(LongPath source, LongPath destination, ReplacementCharacters replacements)
 		{
-			destination = GetValidFilename(destination, replacements);
+			var extension = Path.GetExtension(source);
+			destination = GetValidFilename(destination, replacements, extension);
 			SaferMove(source, destination);
 			return destination;
 		}

Source/LibationAvalonia/Dialogs/EditTemplateDialog.axaml.cs

@@ -162,14 +162,17 @@ namespace LibationAvalonia.Dialogs
 					Title = chapterName
 				};
 
+				/*
+				* Path must be rooted for windows to allow long file paths. This is
+				* only necessary for folder templates because they may contain several
+				* subdirectories. Without rooting, we won't be allowed to create a
+				* relative path longer than MAX_PATH.
+				*/
+
 				var books = config.Books;
 				var folder = Templates.Folder.GetPortionFilename(
 					libraryBookDto,
-				//Path must be rooted for windows to allow long file paths. This is
+					Path.Combine(books, isFolder ? workingTemplateText : config.FolderTemplate), "");
-				//only necessary for folder templates because they may contain several
-				//subdirectories. Without rooting, we won't be allowed to create a
-				//relative path longer than MAX_PATH
-				Path.Combine(books, isFolder ? workingTemplateText : config.FolderTemplate));
 
 				folder = Path.GetRelativePath(books, folder);
 
@@ -182,7 +185,7 @@ namespace LibationAvalonia.Dialogs
 					"")
 				: Templates.File.GetPortionFilename(
 					libraryBookDto,
-					isFolder ? config.FileTemplate : workingTemplateText);
+					isFolder ? config.FileTemplate : workingTemplateText, "");
 				var ext = config.DecryptToLossy ? "mp3" : "m4b";
 
 				var chapterTitle = Templates.ChapterTitle.GetPortionTitle(libraryBookDto, workingTemplateText, partFileProperties);

Source/LibationFileManager/Templates.cs

@@ -99,11 +99,11 @@ namespace LibationFileManager
 		/// <summary>
 		/// EditTemplateDialog: Get template generated filename for portion of path
 		/// </summary>
-		public string GetPortionFilename(LibraryBookDto libraryBookDto, string template)
+		public string GetPortionFilename(LibraryBookDto libraryBookDto, string template, string fileExtension)
 			=> string.IsNullOrWhiteSpace(template)
 			? ""
-			: getFileNamingTemplate(libraryBookDto, template, null, null)
+			: getFileNamingTemplate(libraryBookDto, template, null, fileExtension)
-			.GetFilePath(Configuration.Instance.ReplacementCharacters).PathWithoutPrefix;
+			.GetFilePath(Configuration.Instance.ReplacementCharacters, fileExtension).PathWithoutPrefix;
 
 		private static Regex ifSeriesRegex { get; } = new Regex("<if series->(.*?)<-if series>", RegexOptions.Compiled | RegexOptions.IgnoreCase);
 
@@ -215,7 +215,7 @@ namespace LibationFileManager
 			/// <summary>USES LIVE CONFIGURATION VALUES</summary>
 			public string GetFilename(LibraryBookDto libraryBookDto, string baseDir = null)
 				=> getFileNamingTemplate(libraryBookDto, Configuration.Instance.FolderTemplate, baseDir ?? AudibleFileStorage.BooksDirectory, null)
-				.GetFilePath(Configuration.Instance.ReplacementCharacters);
+				.GetFilePath(Configuration.Instance.ReplacementCharacters, string.Empty);
 			#endregion
 		}
 
@@ -238,7 +238,7 @@ namespace LibationFileManager
 			/// <summary>USES LIVE CONFIGURATION VALUES</summary>
 			public string GetFilename(LibraryBookDto libraryBookDto, string dirFullPath, string extension, bool returnFirstExisting = false)
 				=> getFileNamingTemplate(libraryBookDto, Configuration.Instance.FileTemplate, dirFullPath, extension)
-				.GetFilePath(Configuration.Instance.ReplacementCharacters, returnFirstExisting);
+				.GetFilePath(Configuration.Instance.ReplacementCharacters, extension, returnFirstExisting);
 			#endregion
 		}
 
@@ -273,19 +273,20 @@ namespace LibationFileManager
 			public string GetFilename(LibraryBookDto libraryBookDto, AaxDecrypter.MultiConvertFileProperties props)
 				=> GetPortionFilename(libraryBookDto, Configuration.Instance.ChapterFileTemplate, props, AudibleFileStorage.DecryptInProgressDirectory);
 
-			public string GetPortionFilename(LibraryBookDto libraryBookDto, string template, AaxDecrypter.MultiConvertFileProperties props, string fullDirPath, ReplacementCharacters replacements = null)
+			public string GetPortionFilename(LibraryBookDto libraryBookDto, string template,  AaxDecrypter.MultiConvertFileProperties props, string fullDirPath, ReplacementCharacters replacements = null)
 			{
 				if (string.IsNullOrWhiteSpace(template)) return string.Empty;
 
 				replacements ??= Configuration.Instance.ReplacementCharacters;
-				var fileNamingTemplate = getFileNamingTemplate(libraryBookDto, template, fullDirPath, Path.GetExtension(props.OutputFileName));
+				var fileExtension = Path.GetExtension(props.OutputFileName);
+				var fileNamingTemplate = getFileNamingTemplate(libraryBookDto, template, fullDirPath, fileExtension);
 
 				fileNamingTemplate.AddParameterReplacement(TemplateTags.ChCount, props.PartsTotal);
 				fileNamingTemplate.AddParameterReplacement(TemplateTags.ChNumber, props.PartsPosition);
 				fileNamingTemplate.AddParameterReplacement(TemplateTags.ChNumber0, FileUtility.GetSequenceFormatted(props.PartsPosition, props.PartsTotal));
 				fileNamingTemplate.AddParameterReplacement(TemplateTags.ChTitle, props.Title ?? "");
 
-				return fileNamingTemplate.GetFilePath(replacements).PathWithoutPrefix;
+				return fileNamingTemplate.GetFilePath(replacements, fileExtension).PathWithoutPrefix;
 			}
 			#endregion
 		}

Source/LibationWinForms/Dialogs/EditTemplateDialog.cs

@@ -98,15 +98,16 @@ namespace LibationWinForms.Dialogs
 			};
 
 
-
+			/*
+			* Path must be rooted for windows to allow long file paths. This is
+			* only necessary for folder templates because they may contain several
+			* subdirectories. Without rooting, we won't be allowed to create a
+			* relative path longer than MAX_PATH.
+			*/
 			var books = config.Books;
 			var folder = Templates.Folder.GetPortionFilename(
-				libraryBookDto,
+				libraryBookDto,				
-				//Path must be rooted for windows to allow long file paths. This is
+				Path.Combine(books, isFolder ? workingTemplateText : config.FolderTemplate), "");
-				//only necessary for folder templates because they may contain several
-				//subdirectories. Without rooting, we won't be allowed to create a
-				//relative path longer than MAX_PATH
-				Path.Combine(books, isFolder ? workingTemplateText : config.FolderTemplate));
 
 			folder = Path.GetRelativePath(books, folder);
 
@@ -119,7 +120,7 @@ namespace LibationWinForms.Dialogs
 					"")
 				: Templates.File.GetPortionFilename(
 					libraryBookDto,
-					isFolder ? config.FileTemplate : workingTemplateText);
+					isFolder ? config.FileTemplate : workingTemplateText, "");
 			var ext = config.DecryptToLossy ? "mp3" : "m4b";
 
 			var chapterTitle = Templates.ChapterTitle.GetPortionTitle(libraryBookDto, workingTemplateText, partFileProperties);

Source/_Tests/FileManager.Tests/FileNamingTemplateTests.cs

@@ -33,12 +33,13 @@ namespace FileNamingTemplateTests
 		{
 			var template = $"<title> [<id>]";
 
-			var fullfilename = Path.Combine(dirFullPath, template + FileUtility.GetStandardizedExtension(extension));
+			extension = FileUtility.GetStandardizedExtension(extension);
+			var fullfilename = Path.Combine(dirFullPath, template + extension);
 
 			var fileNamingTemplate = new FileNamingTemplate(fullfilename);
 			fileNamingTemplate.AddParameterReplacement("title", filename);
 			fileNamingTemplate.AddParameterReplacement("id", metadataSuffix);
-			return fileNamingTemplate.GetFilePath(Replacements).PathWithoutPrefix;
+			return fileNamingTemplate.GetFilePath(Replacements, extension).PathWithoutPrefix;
 		}
 
 		[TestMethod]
@@ -57,12 +58,13 @@ namespace FileNamingTemplateTests
 			// 100-999 => 001-999
 			var chapterCountLeadingZeros = partsPosition.ToString().PadLeft(partsTotal.ToString().Length, '0');
 
-			var t = Path.ChangeExtension(originalPath, null) + " - <chapter> - <title>" + Path.GetExtension(originalPath);
+			var estension = Path.GetExtension(originalPath);
+			var t = Path.ChangeExtension(originalPath, null) + " - <chapter> - <title>" + estension;
 
 			var fileNamingTemplate = new FileNamingTemplate(t);
 			fileNamingTemplate.AddParameterReplacement("chapter", chapterCountLeadingZeros);
 			fileNamingTemplate.AddParameterReplacement("title", suffix);
-			return fileNamingTemplate.GetFilePath(Replacements).PathWithoutPrefix;
+			return fileNamingTemplate.GetFilePath(Replacements, estension).PathWithoutPrefix;
 		}
 
 		[TestMethod]
@@ -74,7 +76,7 @@ namespace FileNamingTemplateTests
 			{
 				var fileNamingTemplate = new FileNamingTemplate(inStr);
 				fileNamingTemplate.AddParameterReplacement("title", @"s\l/a\s/h\e/s");
-				fileNamingTemplate.GetFilePath(Replacements).PathWithoutPrefix.Should().Be(outStr);
+				fileNamingTemplate.GetFilePath(Replacements, "txt").PathWithoutPrefix.Should().Be(outStr);
 			}
 		}
 	}

Source/_Tests/FileManager.Tests/FileUtilityTests.cs

@@ -197,30 +197,30 @@ namespace FileUtilityTests
 
 		[TestMethod]
 		// dot-files
-		[DataRow(@"C:\a bc\x y z\.f i l e.txt", PlatformID.Win32NT)]
+		[DataRow(@"C:\a bc\x y z\.f i l e.txt", "txt", PlatformID.Win32NT)]
-		[DataRow(@"/a bc/x y z/.f i l e.txt", PlatformID.Unix)]
+		[DataRow(@"/a bc/x y z/.f i l e.txt", "txt", PlatformID.Unix)]
 		// dot-folders
-		[DataRow(@"C:\a bc\.x y z\f i l e.txt", PlatformID.Win32NT)]
+		[DataRow(@"C:\a bc\.x y z\f i l e.txt", "txt", PlatformID.Win32NT)]
-		[DataRow(@"/a bc/.x y z/f i l e.txt", PlatformID.Unix)]
+		[DataRow(@"/a bc/.x y z/f i l e.txt", "txt", PlatformID.Unix)]
-		public void Valid(string input, PlatformID platformID) => Tests(input, input, platformID);
+		public void Valid(string input, string extension, PlatformID platformID) => Tests(input, extension, input, platformID);
 
 		[TestMethod]
 		// folder spaces
-		[DataRow(@"C:\   a bc   \x y z   ", @"C:\a bc\x y z", PlatformID.Win32NT)]
+		[DataRow(@"C:\   a bc   \x y z   ","", @"C:\a bc\x y z", PlatformID.Win32NT)]
-		[DataRow(@"/   a bc   /x y z   ", @"/a bc/x y z", PlatformID.Unix)]
+		[DataRow(@"/   a bc   /x y z   ", "", @"/a bc/x y z", PlatformID.Unix)]
 		// file spaces
-		[DataRow(@"C:\a bc\x y z\   f i l e.txt   ", @"C:\a bc\x y z\f i l e.txt", PlatformID.Win32NT)]
+		[DataRow(@"C:\a bc\x y z\   f i l e.txt   ", "txt", @"C:\a bc\x y z\f i l e.txt", PlatformID.Win32NT)]
-		[DataRow(@"/a bc/x y z/   f i l e.txt   ", @"/a bc/x y z/f i l e.txt", PlatformID.Unix)]
+		[DataRow(@"/a bc/x y z/   f i l e.txt   ", "txt", @"/a bc/x y z/f i l e.txt", PlatformID.Unix)]
 		// eliminate beginning space and end dots and spaces
-		[DataRow(@"C:\a bc\   . . . x y z . . .   \f i l e.txt", @"C:\a bc\. . . x y z\f i l e.txt", PlatformID.Win32NT)]
+		[DataRow(@"C:\a bc\   . . . x y z . . .   \f i l e.txt", "txt", @"C:\a bc\. . . x y z\f i l e.txt", PlatformID.Win32NT)]
-		[DataRow(@"/a bc/   . . . x y z . . .   /f i l e.txt", @"/a bc/. . . x y z/f i l e.txt", PlatformID.Unix)]
+		[DataRow(@"/a bc/   . . . x y z . . .   /f i l e.txt", "txt", @"/a bc/. . . x y z/f i l e.txt", PlatformID.Unix)]
 		// file end dots
-		[DataRow(@"C:\a bc\x y z\f i l e.txt . . .", @"C:\a bc\x y z\f i l e.txt", PlatformID.Win32NT)]
+		[DataRow(@"C:\a bc\x y z\f i l e.txt . . .", "txt", @"C:\a bc\x y z\f i l e.txt", PlatformID.Win32NT)]
-		[DataRow(@"/a bc/x y z/f i l e.txt . . .", @"/a bc/x y z/f i l e.txt", PlatformID.Unix)]
+		[DataRow(@"/a bc/x y z/f i l e.txt . . .", "txt", @"/a bc/x y z/f i l e.txt", PlatformID.Unix)]
-		public void Tests(string input, string expected, PlatformID platformID)
+		public void Tests(string input, string extension, string expected, PlatformID platformID)
 		{
 			if (Environment.OSVersion.Platform == platformID)
-				FileUtility.GetValidFilename(input, Replacements).PathWithoutPrefix.Should().Be(expected);
+				FileUtility.GetValidFilename(input, Replacements, extension).PathWithoutPrefix.Should().Be(expected);
 		}
 	}
 

Source/_Tests/LibationFileManager.Tests/TemplatesTests.cs

@@ -81,23 +81,25 @@ namespace TemplatesTests
 			=> Templates.getFileNamingTemplate(GetLibraryBook(), template, dirFullPath, extension);
 
 		[TestMethod]
-		[DataRow("f.txt", @"C:\foo\bar", null, @"C:\foo\bar\f.txt", PlatformID.Win32NT)]
+		[DataRow("f.txt", @"C:\foo\bar", "", @"C:\foo\bar\f.txt", PlatformID.Win32NT)]
-		[DataRow("f.txt", @"/foo/bar", null, @"/foo/bar/f.txt", PlatformID.Unix)]
+		[DataRow("f.txt", @"/foo/bar", "", @"/foo/bar/f.txt", PlatformID.Unix)]
-		[DataRow("f.txt", @"C:\foo\bar", "ext", @"C:\foo\bar\f.txt.ext", PlatformID.Win32NT)]
+		[DataRow("f.txt", @"C:\foo\bar", ".ext", @"C:\foo\bar\f.txt.ext", PlatformID.Win32NT)]
-		[DataRow("f.txt", @"/foo/bar", "ext", @"/foo/bar/f.txt.ext", PlatformID.Unix)]
+		[DataRow("f.txt", @"/foo/bar", ".ext", @"/foo/bar/f.txt.ext", PlatformID.Unix)]
-		[DataRow("f", @"C:\foo\bar", "ext", @"C:\foo\bar\f.ext", PlatformID.Win32NT)]
+		[DataRow("f", @"C:\foo\bar", ".ext", @"C:\foo\bar\f.ext", PlatformID.Win32NT)]
-		[DataRow("f", @"/foo/bar", "ext", @"/foo/bar/f.ext", PlatformID.Unix)]
+		[DataRow("f", @"/foo/bar", ".ext", @"/foo/bar/f.ext", PlatformID.Unix)]
-		[DataRow("<id>", @"C:\foo\bar", "ext", @"C:\foo\bar\asin.ext", PlatformID.Win32NT)]
+		[DataRow("<id>", @"C:\foo\bar", ".ext", @"C:\foo\bar\asin.ext", PlatformID.Win32NT)]
-		[DataRow("<id>", @"/foo/bar", "ext", @"/foo/bar/asin.ext", PlatformID.Unix)]
+		[DataRow("<id>", @"/foo/bar", ".ext", @"/foo/bar/asin.ext", PlatformID.Unix)]
-        [DataRow("<bitrate> - <samplerate> - <channels>", @"C:\foo\bar", "ext", @"C:\foo\bar\128 - 44100 - 2.ext", PlatformID.Win32NT)]
+        [DataRow("<bitrate> - <samplerate> - <channels>", @"C:\foo\bar", ".ext", @"C:\foo\bar\128 - 44100 - 2.ext", PlatformID.Win32NT)]
-        [DataRow("<bitrate> - <samplerate> - <channels>", @"/foo/bar", "ext", @"/foo/bar/128 - 44100 - 2.ext", PlatformID.Unix)]
+        [DataRow("<bitrate> - <samplerate> - <channels>", @"/foo/bar", ".ext", @"/foo/bar/128 - 44100 - 2.ext", PlatformID.Unix)]
-        [DataRow("<year> - <channels>", @"C:\foo\bar", "ext", @"C:\foo\bar\2017 - 2.ext", PlatformID.Win32NT)]
+        [DataRow("<year> - <channels>", @"C:\foo\bar", ".ext", @"C:\foo\bar\2017 - 2.ext", PlatformID.Win32NT)]
-        [DataRow("<year> - <channels>", @"/foo/bar", "ext", @"/foo/bar/2017 - 2.ext", PlatformID.Unix)]
+        [DataRow("<year> - <channels>", @"/foo/bar", ".ext", @"/foo/bar/2017 - 2.ext", PlatformID.Unix)]
-        public void Tests(string template, string dirFullPath, string extension, string expected, PlatformID platformID)
+		[DataRow("(000.0) <year> - <channels>", @"C:\foo\bar", "ext", @"C:\foo\bar\(000.0) 2017 - 2.ext", PlatformID.Win32NT)]
+		[DataRow("(000.0) <year> - <channels>", @"/foo/bar", ".ext", @"/foo/bar/(000.0) 2017 - 2.ext", PlatformID.Unix)]
+		public void Tests(string template, string dirFullPath, string extension, string expected, PlatformID platformID)
 		{
 			if (Environment.OSVersion.Platform == platformID)
 				Templates.getFileNamingTemplate(GetLibraryBook(), template, dirFullPath, extension)
-				.GetFilePath(Replacements)
+				.GetFilePath(Replacements, extension)
 				.PathWithoutPrefix
 				.Should().Be(expected);
 		}
@@ -109,7 +111,7 @@ namespace TemplatesTests
 		{
 			if (Environment.OSVersion.Platform == platformID)
 				Templates.getFileNamingTemplate(GetLibraryBook(), "foo<if series-><-if series>bar", directory, "ext")
-				.GetFilePath(Replacements)
+				.GetFilePath(Replacements, ".ext")
 				.PathWithoutPrefix
 				.Should().Be(expected);
 		}
@@ -121,7 +123,7 @@ namespace TemplatesTests
 		{
 			if (Environment.OSVersion.Platform == platformID)
 				Templates.getFileNamingTemplate(GetLibraryBook(null), "foo<if series->-<series>-<id>-<-if series>bar", directory, "ext")
-				.GetFilePath(Replacements)
+				.GetFilePath(Replacements, ".ext")
 				.PathWithoutPrefix
 				.Should().Be(expected);
 		}
@@ -133,7 +135,7 @@ namespace TemplatesTests
 		{
 			if (Environment.OSVersion.Platform == platformID)
 				Templates.getFileNamingTemplate(GetLibraryBook(), "foo<if series->-<series>-<id>-<-if series>bar", directory, "ext")
-				.GetFilePath(Replacements)
+				.GetFilePath(Replacements, ".ext")
 				.PathWithoutPrefix
 				.Should().Be(expected);
 		}