Make file extension checks case insensitive

Author: 17cupsofcoffee

src/AbletonMetadata.cs

@@ -10,7 +10,7 @@ public static class AbletonMetadata
     /// See https://help.ableton.com/hc/en-us/articles/211427589-Supported-Audio-File-Formats.
     /// </summary>
     private static List<string> supportedExtensions = new List<string>() {
-        ".wav", ".aiff", ".flac", ".ogg", ".mp3", ".mp4", ".m4a"
+        ".wav", ".wave", ".aif", ".aiff", ".flac", ".ogg", ".mp3", ".mp4", ".m4a"
     };
 
     /// <summary>
@@ -23,7 +23,7 @@ public static class AbletonMetadata
     /// <returns>Whether or not the path is for metadata.</returns>
     public static bool IsMetadata(string path)
     {
-        return path.Contains("Ableton Folder Info") || Path.GetExtension(path) == ".asd";
+        return path.Contains("Ableton Folder Info") || Path.GetExtension(path).ToLower() == ".asd";
     }
 
     /// <summary>
@@ -43,6 +43,6 @@ public static string GetXmpFilePath(string folder)
     /// <returns>Whether or not the file is supported by Live.</returns>
     public static bool IsSupportedSampleFormat(string filename)
     {
-        return supportedExtensions.Contains(Path.GetExtension(filename));
+        return supportedExtensions.Contains(Path.GetExtension(filename).ToLower());
     }
 }

test/AbletonMetadataTests.cs

@@ -5,6 +5,7 @@ public class AbletonMetadataTests
     [Theory]
     [InlineData("C:/foo/Ableton Folder Info/file.txt", true)]
     [InlineData("C:/foo/metadata.asd", true)]
+    [InlineData("C:/foo/metadata.ASD", true)]
     [InlineData("C:/foo/sound.wav", false)]
     public void ShouldDetectMetadata(string path, bool isValid)
     {
@@ -21,12 +22,15 @@ public void ShouldReturnXmpFilePath()
 
     [Theory]
     [InlineData("sound.wav", true)]
+    [InlineData("sound.wave", true)]
+    [InlineData("sound.aif", true)]
     [InlineData("sound.aiff", true)]
     [InlineData("sound.flac", true)]
     [InlineData("sound.ogg", true)]
     [InlineData("sound.mp3", true)]
     [InlineData("sound.mp4", true)]
     [InlineData("sound.m4a", true)]
+    [InlineData("sound.WAV", true)]
     [InlineData("sound.exe", false)]
     public void ShouldDetectSampleFiles(string filename, bool isValid)
     {