add stack trace unit tests

Author: scomitch

engine/Sandbox.Test/Editor/StackTrace.cs

@@ -0,0 +1,27 @@
+using System.Reflection;
+using System.Text.RegularExpressions;
+using Editor;
+
+namespace TestEditor;
+
+[TestClass]
+public class StackTraceTests
+{
+	[TestMethod]
+	[DataRow( @"at Example.Foo() in C:\sbox\Source.cs:line 123", true )]
+	[DataRow( @"cat Example.Foo() in C:\sbox\Source.cs:line 123", false )]
+	[DataRow( @"at Error in something in C:\sbox\Source.cs:line 123", true )]
+	public void DefaultStackLine( string line, bool expectMatch )
+	{
+		var isMatch = GetDefaultStackLineHandlerRegex().Match( line );
+
+		Assert.AreEqual( expectMatch, isMatch.Success );
+	}
+
+	private Regex GetDefaultStackLineHandlerRegex()
+	{
+		var method = typeof( StackTraceProperty ).GetMethod( nameof( StackTraceProperty.DefaultStackLineHandler ), BindingFlags.Static | BindingFlags.Public )!;
+
+		return new Regex( method.GetCustomAttribute<StackLineHandlerAttribute>()!.Regex );
+	}
+}