3 files changed, 85 insertions, 0 deletions
diff --git a/Compiler.Testing/Compiler.Testing.csproj b/Compiler.Testing/Compiler.Testing.csproj
new file mode 100644
index 0000000..ed9c322
--- /dev/null
+++ b/Compiler.Testing/Compiler.Testing.csproj
@@ -0,0 +1,28 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+    <PropertyGroup>
+        <TargetFramework>net9.0</TargetFramework>
+        <LangVersion>latest</LangVersion>
+        <ImplicitUsings>enable</ImplicitUsings>
+        <Nullable>enable</Nullable>
+        <IsPackable>false</IsPackable>
+    </PropertyGroup>
+
+    <ItemGroup>
+        <PackageReference Include="coverlet.collector" Version="6.0.2"/>
+        <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.12.0"/>
+        <PackageReference Include="NUnit" Version="4.2.2"/>
+        <PackageReference Include="NUnit.Analyzers" Version="4.4.0"/>
+        <PackageReference Include="NUnit3TestAdapter" Version="4.6.0"/>
+    </ItemGroup>
+
+    <ItemGroup>
+        <Using Include="NUnit.Framework"/>
+    </ItemGroup>
+
+    <ItemGroup>
+      <ProjectReference Include="..\Compiler\Compiler.csproj" />
+      <ProjectReference Include="..\Orchestrator\Orchestrator.csproj" />
+    </ItemGroup>
+
+</Project>
diff --git a/Compiler.Testing/SanityTests.cs b/Compiler.Testing/SanityTests.cs
new file mode 100644
index 0000000..46c0323
--- /dev/null
+++ b/Compiler.Testing/SanityTests.cs
@@ -0,0 +1,43 @@
+namespace Compiler.Testing;
+
+using Q1;
+
+[TestFixture]
+public class SanityTests
+{
+    [Test]
+    public void BlankProgram()
+    {
+        string program = """
+                         int main() { }
+                         """;
+
+        string result = TestingHelpers.CompileString(program).Trim();
+        Assert.That(
+            result, Is.EqualTo(
+                """
+                jmp _main
+                _main:
+                    mov 0, V0
+                    ret
+                """));
+    }
+
+    [Test]
+    public void ReturnConstant()
+    {
+        string program = """
+                         int main() { return 42; }
+                         """;
+
+        string result = TestingHelpers.CompileString(program).Trim();
+        Assert.That(
+            result, Is.EqualTo(
+                """
+                jmp _main
+                _main:
+                    mov 42, V0
+                    ret
+                """));
+    }
+}
+\ No newline at end of file
diff --git a/Compiler.Testing/TestingHelpers.cs b/Compiler.Testing/TestingHelpers.cs
new file mode 100644
index 0000000..a3d85fe
--- /dev/null
+++ b/Compiler.Testing/TestingHelpers.cs
@@ -0,0 +1,14 @@
+namespace Compiler.Testing;
+
+using Antlr4.Runtime;
+using Q1.Compiler;
+
+public class TestingHelpers
+{
+    public static string CompileString(string input)
+    {
+        CompilerOptions options = new() { CommentCompilationMode = CommentCompilationMode.None };
+        IEnumerable<string> lines = Program.Compile(options, new AntlrInputStream(input));
+        return Program.Optimize(lines);
+    }
+}
+\ No newline at end of file