Add GCF tests

Author: mnadareski

BinaryObjectScanner.Test/FileType/GCFTests.cs

@@ -0,0 +1,33 @@
+using System.IO;
+using BinaryObjectScanner.FileType;
+using Xunit;
+
+namespace BinaryObjectScanner.Test.FileType
+{
+    public class GCFTests
+    {
+        private static readonly SabreTools.Serialization.Wrappers.GCF wrapper
+            = new(new SabreTools.Data.Models.GCF.File(), new MemoryStream(new byte[1024]));
+
+        [Fact]
+        public void DetectFile_EmptyString_Null()
+        {
+            string file = string.Empty;
+            var detectable = new GCF(wrapper);
+
+            string? actual = detectable.Detect(file, includeDebug: false);
+            Assert.Null(actual);
+        }
+
+        [Fact]
+        public void DetectStream_EmptyStream_DefaultValue()
+        {
+            Stream? stream = new MemoryStream();
+            string file = string.Empty;
+            var detectable = new GCF(wrapper);
+
+            string? actual = detectable.Detect(stream, file, includeDebug: false);
+            Assert.Equal("AACS (Unknown Version)", actual);
+        }
+    }
+}

BinaryObjectScanner/FileType/GCF.cs

@@ -21,12 +21,13 @@ public GCF(SabreTools.Serialization.Wrappers.GCF wrapper) : base(wrapper) { }
             // At the moment, all samples of GCF files on redump are unencrypted. Combined with being uncertain about
             // whether this is the best way to check whether the GCF is encrypted, this block will be left commented
             // out until further research is done.
-            /*bool encrypted = false;
-            if (_wrapper.Files != null && _wrapper.Files.Length > 0)
-                encrypted = _wrapper.Files[0].Encrypted;
+            // bool encrypted = false;
+            // if (_wrapper.Files != null && _wrapper.Files.Length > 0)
+            //     encrypted = _wrapper.Files[0].Encrypted;
+
+            // string encryptedString = encrypted ? "encrypted" : "unencrypted";
+            // string returnString = $"{fileName} - {depotId} (v{manifestVersion}, {encryptedString})";
 
-            string encryptedString = encrypted ? "encrypted" : "unencrypted";
-            string returnString = $"{fileName} - {depotId} (v{manifestVersion}, {encryptedString})";*/
             string returnString = $"{fileName} - {depotId} (v{manifestVersion})";
             return returnString;
         }