Added source parsing to the generator driver.

Author: jscarle

src/SourceGeneratorTestHelpers/IncrementalGenerator.cs

@@ -21,9 +21,8 @@ public static GeneratorDriverRunResult Run<T>(
     )
         where T : IIncrementalGenerator, new()
     {
-        var generator = new T();
-
-        var driver = CSharpGeneratorDriver.Create(generator);
+        var generators = GetGenerators<T>().Select(x => x.AsSourceGenerator());
+        var driver = CSharpGeneratorDriver.Create(generators, null, cSharpParseOptions);
 
         var compilation = CSharpCompilation.Create(
             nameof(SourceGeneratorTestHelpers),
@@ -52,9 +51,8 @@ public static GeneratorDriverRunResult Run<T>(
     )
         where T : IIncrementalGenerator, new()
     {
-        var generator = new T();
-
-        var driver = CSharpGeneratorDriver.Create(generator);
+        var generators = GetGenerators<T>().Select(x => x.AsSourceGenerator());
+        var driver = CSharpGeneratorDriver.Create(generators, null, cSharpParseOptions);
 
         var syntaxTrees = sources.Select(source => CSharpSyntaxTree.ParseText(source, cSharpParseOptions)).ToArray();
 
@@ -69,4 +67,10 @@ public static GeneratorDriverRunResult Run<T>(
 
         return runResult;
     }
+
+    private static IEnumerable<T> GetGenerators<T>()
+        where T : IIncrementalGenerator, new()
+    {
+        yield return new T();
+    }
 }

src/SourceGeneratorTestHelpers/SourceGenerator.cs

@@ -21,9 +21,8 @@ public static GeneratorDriverRunResult Run<T>(
     )
         where T : ISourceGenerator, new()
     {
-        var generator = new T();
-
-        var driver = CSharpGeneratorDriver.Create(generator);
+        var generators = GetGenerators<T>().Select(x => (ISourceGenerator)x);
+        var driver = CSharpGeneratorDriver.Create(generators, null, cSharpParseOptions);
 
         var compilation = CSharpCompilation.Create(
             nameof(SourceGeneratorTestHelpers),
@@ -52,9 +51,8 @@ public static GeneratorDriverRunResult Run<T>(
     )
         where T : ISourceGenerator, new()
     {
-        var generator = new T();
-
-        var driver = CSharpGeneratorDriver.Create(generator);
+        var generators = GetGenerators<T>().Select(x => (ISourceGenerator)x);
+        var driver = CSharpGeneratorDriver.Create(generators, null, cSharpParseOptions);
 
         var syntaxTrees = sources.Select(source => CSharpSyntaxTree.ParseText(source, cSharpParseOptions)).ToArray();
 
@@ -69,4 +67,10 @@ public static GeneratorDriverRunResult Run<T>(
 
         return runResult;
     }
+
+    private static IEnumerable<T> GetGenerators<T>()
+        where T : ISourceGenerator, new()
+    {
+        yield return new T();
+    }
 }

src/SourceGeneratorTestHelpers/SourceGeneratorTestHelpers.csproj

@@ -6,7 +6,7 @@
         <Nullable>enable</Nullable>
         <RootNamespace>SourceGeneratorTestHelpers</RootNamespace>
         <LangVersion>latest</LangVersion>
-        <Version>8.0.11</Version>
+        <Version>8.0.12</Version>
         <Title>SourceGeneratorTestHelpers</Title>
         <Authors>Jean-Sebastien Carle</Authors>
         <Description>Test helpers and extension methods to simplify testing of .NET source generators.</Description>
@@ -18,8 +18,8 @@
         <RepositoryUrl>https://github.com/jscarle/SourceGeneratorTestHelpers</RepositoryUrl>
         <RepositoryType>git</RepositoryType>
         <PackageTags>testing source-generators</PackageTags>
-        <AssemblyVersion>8.0.11.0</AssemblyVersion>
-        <FileVersion>8.0.11.0</FileVersion>
+        <AssemblyVersion>8.0.12.0</AssemblyVersion>
+        <FileVersion>8.0.12.0</FileVersion>
         <NeutralLanguage>en-US</NeutralLanguage>
         <IncludeSymbols>true</IncludeSymbols>
         <SymbolPackageFormat>snupkg</SymbolPackageFormat>