Add scanner helper method tests

BinaryObjectScanner.Test/ScannerTests.cs

@@ -0,0 +1,44 @@
+using System.Collections.Generic;
+using Xunit;
+
+namespace BinaryObjectScanner.Test
+{
+    public class ScannerTests
+    {
+        #region ProcessProtectionString
+
+        [Fact]
+        public void ProcessProtectionString_Null_Empty()
+        {
+            string? protection = null;
+            List<string> actual = Scanner.ProcessProtectionString(protection);
+            Assert.Empty(actual);
+        }
+
+        [Fact]
+        public void ProcessProtectionString_Empty_Empty()
+        {
+            string? protection = string.Empty;
+            List<string> actual = Scanner.ProcessProtectionString(protection);
+            Assert.Empty(actual);
+        }
+
+        [Fact]
+        public void ProcessProtectionString_NoIndicator_Single()
+        {
+            string? protection = "item1";
+            List<string> actual = Scanner.ProcessProtectionString(protection);
+            Assert.Single(actual);
+        }
+
+        [Fact]
+        public void ProcessProtectionString_Indicator_Multiple()
+        {
+            string? protection = "item1;item2";
+            List<string> actual = Scanner.ProcessProtectionString(protection);
+            Assert.Equal(2, actual.Count);
+        }
+
+        #endregion
+    }
+}