Fix BadContent test

Author: harry-cpp

MonoGame.Framework.Content.Pipeline/TextureImporter.cs

@@ -84,7 +84,7 @@ public override TextureContent Import(string filename, ContentImporterContext co
             var fBitmap = FreeImage.Load(format, filename, 0);
             //if freeimage can not recognize the image type
             if(format == FREE_IMAGE_FORMAT.FIF_UNKNOWN)
-                throw new ContentLoadException("TextureImporter failed to load '" + filename + "'");
+                throw new InvalidContentException("TextureImporter failed to load '" + filename + "'");
             //if freeimage can recognize the file headers but can't read its contents
             else if(fBitmap == IntPtr.Zero)
                 throw new InvalidContentException("TextureImporter couldn't understand the contents of '" + filename + "'", output.Identity);

Tests/Assets/Textures/rgbf.tif

@@ -105,9 +105,6 @@ public void ImportTif( )
         /// Note that the image was created with Freeimage from a bitmap
         /// </summary>
         [Test]
-#if MACOS || LINUX
-        [Ignore("Does not work on Unix based systems. Its odd the test passes?")]
-#endif
         public void ImportImageWithBadContent( )
         {
             Assert.Throws(typeof(InvalidContentException), ( ) => ImportStandard("Assets/Textures/rgbf.tif", SurfaceFormat.Vector4, 64));