public void GenerateUpgrade()
{
IMdlParser mdlParser = new MdlParser(MdlParserTestFixture.CreateScanner(@"version 1:
add table User:
Login type => String, length => 200, nullable => false"));
IAstNode astNode = mdlParser.Parse();
IMdlCompilerStage upgradeGenerationStage = new UpgradeGenerationStage();
astNode.Accept(upgradeGenerationStage);
Assert.IsInstanceOfType(typeof(IUpgradeNode), astNode.ChildNodes[0]);
Assert.AreEqual(1, astNode.ChildNodes[0].ChildNodes.Count);
}
private IAstNode GetAstNode()
{
IAstNode astNode;
using(Stream resourceStream =
Assembly.GetExecutingAssembly().GetManifestResourceStream("octalforty.Wizardby.Tests.Resources.Blog.mdl"))
{
IMdlParser mdlParser = new MdlParser(MdlParserTestFixture.CreateScanner(new StreamReader(resourceStream, Encoding.UTF8)));
astNode = mdlParser.Parse();
} // using
//
// Process type aliases
astNode.Accept(new TypeAliasResolutionCompilerStage());
//
// Resolve PKs
astNode.Accept(new PrimaryKeyResolutionCompilerStage());
//
// Bind stuff
BindingCompilerStage bindingCompilerStage = new BindingCompilerStage();
bindingCompilerStage.SetEnvironment(new Wizardby.Core.Compiler.Environment());
astNode.Accept(bindingCompilerStage);
//
// Flatten AST
astNode.Accept(new AstFlattenerCompilerStage());
//
// We also need to generate upgrade since that's what downgrade generator is expecting
IMdlCompilerStage upgradeGenerationStage = new UpgradeGenerationStage();
astNode.Accept(upgradeGenerationStage);
IMdlCompilerStage downgradeGenerationStage = new DowngradeGenerationStage();
downgradeGenerationStage.SetEnvironment(new Wizardby.Core.Compiler.Environment());
astNode.Accept(downgradeGenerationStage);
return astNode;
}
