Add ansi parser tests

StabilityMatrix.Tests/Core/AnsiParserTests.cs

@@ -0,0 +1,19 @@
+using StabilityMatrix.Core.Processes;
+
+namespace StabilityMatrix.Tests.Core;
+
+[TestClass]
+public class AnsiParserTests
+{
+    [DataTestMethod]
+    [DataRow("\u001b[0m", "\u001b[0m")]
+    [DataRow("\u001b[A", "\u001b[A")]
+    [DataRow("\u001b[A\r\n", "\u001b[A")]
+    public void TestAnsiRegex(string source, string expectedMatch)
+    {
+        var pattern = AnsiParser.AnsiEscapeSequenceRegex();
+        var match = pattern.Match(source);
+        Assert.IsTrue(match.Success);
+        Assert.AreEqual(expectedMatch, match.Value);
+    }
+}