Refactoring

src/Lynx.Generator/GeneratedPackGenerator.cs

@@ -220,4 +220,4 @@ private sealed record Model(string Namespace, string ClassName, string PropertyN
     {
         public const int DefaultValue = 999_999_999;
     }
-}
+}

tests/Lynx.Generator.Test/GeneratedPackTest.cs

@@ -19,7 +19,7 @@ public static partial class TestClass
 }";
 
         // Pass the source code to our helper and snapshot test the output
-        return TestHelper.Verify(source);
+        return Verify(source);
     }
 
     [Test]
@@ -36,7 +36,7 @@ public partial class TestClass
 }";
 
         // Pass the source code to our helper and snapshot test the output
-        return TestHelper.Verify(source);
+        return Verify(source);
     }
 
     [Test]
@@ -53,7 +53,7 @@ public partial class TestClass
 }";
 
         // Pass the source code to our helper and snapshot test the output
-        return TestHelper.Verify(source);
+        return Verify(source);
     }
 
     [Test]
@@ -68,7 +68,7 @@ public partial class TestClass
 }";
 
         // Pass the source code to our helper and snapshot test the output
-        return TestHelper.Verify(source);
+        return Verify(source);
     }
 
     [Test]
@@ -86,7 +86,7 @@ public partial class TestClass
 }";
 
         // Pass the source code to our helper and snapshot test the output
-        return TestHelper.Verify(source);
+        return Verify(source);
     }
 
     [Test]
@@ -102,6 +102,37 @@ public partial class TestClass
 }";
 
         // Pass the source code to our helper and snapshot test the output
-        return TestHelper.Verify(source);
+        return Verify(source);
     }
-}
+
+    /// <summary>
+    /// Based on: https://andrewlock.net/creating-a-source-generator-part-2-testing-an-incremental-generator-with-snapshot-testing/
+    /// https://github.com/andrewlock/blog-examples/blob/c35edf1c1f0e1f9adf84c215e2ce7ab644b374f5/NetEscapades.EnumGenerators2/tests/NetEscapades.EnumGenerators.Tests/cs
+    /// </summary>
+    private static Task Verify(string source)
+    {
+        SyntaxTree syntaxTree = CSharpSyntaxTree.ParseText(source);
+
+        // Create references for assemblies we require
+        // We could add multiple references if required
+        IEnumerable<PortableExecutableReference> references =
+        [
+            MetadataReference.CreateFromFile(typeof(object).Assembly.Location)
+        ];
+
+        CSharpCompilation compilation = CSharpCompilation.Create(
+            assemblyName: "Tests",
+            syntaxTrees: [syntaxTree],
+            references: references);
+
+        GeneratedPackGenerator generator = new GeneratedPackGenerator();
+
+        GeneratorDriver driver = CSharpGeneratorDriver.Create(generator);
+
+        driver = driver.RunGenerators(compilation);
+
+        return Verifier
+            .Verify(driver)
+            .UseDirectory("Snapshots");
+    }
+}

tests/Lynx.Generator.Test/UtilsTest.cs

@@ -2,9 +2,9 @@
 
 public class UtilsTest
 {
+    [TestCase(1, 2, 131073)]
     [TestCase(-1, 2, 131071)]
-    [TestCase(1, -2, -131073)]
-    [TestCase(-1, -2, 131073)]
+    [TestCase(-1, -2, -131073)]
     public void Pack(short mg, short eg, int packedValue)
     {
         Assert.AreEqual(packedValue, Utils.Pack(mg, eg));