From 3a0a044fe2c6d964ff589aebb1215f34c76d5bda Mon Sep 17 00:00:00 2001
From: Ynse Hoornenborg <github@ynse.nl>
Date: Sat, 4 Dec 2021 21:14:25 +0100
Subject: [PATCH] Improve exception messages

---
 src/ImageSharp/Formats/Pbm/PbmDecoderCore.cs | 5 ++---
 1 file changed, 2 insertions(+), 3 deletions(-)

diff --git a/src/ImageSharp/Formats/Pbm/PbmDecoderCore.cs b/src/ImageSharp/Formats/Pbm/PbmDecoderCore.cs
index 1aeecc16ff..b2be74ea14 100644
--- a/src/ImageSharp/Formats/Pbm/PbmDecoderCore.cs
+++ b/src/ImageSharp/Formats/Pbm/PbmDecoderCore.cs
@@ -94,8 +94,7 @@ namespace SixLabors.ImageSharp.Formats.Pbm
             int bytesRead = stream.Read(buffer);
             if (bytesRead != 2 || buffer[0] != 'P')
             {
-                // Empty or not an PPM image.
-                throw new InvalidImageContentException("TODO");
+                throw new InvalidImageContentException("Empty or not an PPM image.");
             }
 
             switch ((char)buffer[1])
@@ -134,7 +133,7 @@ namespace SixLabors.ImageSharp.Formats.Pbm
                 // PAM image: sequence of images.
                 // Not implemented yet
                 default:
-                    throw new NotImplementedException("TODO");
+                    throw new InvalidImageContentException("Unknown of not implemented image type encountered.");
             }
 
             stream.SkipWhitespaceAndComments();