private List <MethodIdentifier> FindCoveringTests(CciModuleSource module, ICodePartsMatcher targetsMatcher)
{
_log.Debug("Scanning " + module.Module.Name + " for selected covering tests. ");
var visitor = new CoveringTestsVisitor(targetsMatcher);
var traverser = new CodeTraverser
{
PreorderVisitor = visitor
};
traverser.Traverse(module.Decompile(module.Module));
_log.Debug("Finished scanning module" + module.Module.Name + ". Found " + visitor.FoundTests.Count +
". Scanned total: " + visitor.ScannedMethods + " methods and " +
visitor.ScannedMethodCalls + " method calls.");
_log.Debug("Listing found tests: ");
foreach (var methodIdentifier in visitor.FoundTests)
{
_log.Debug("Test: " + methodIdentifier);
}
if (visitor.IsChoiceError)
{
throw new TestWasSelectedToMutateException();
}
return(visitor.FoundTests.ToList());
}
public May <TestsLoadContext> LoadTests(string assemblyPath)
{
_log.Info("XUnit loading tests...");
var cci = new CciModuleSource(assemblyPath);
var visitor = new XUnitTestsVisitor();
var traverser = new CodeTraverser
{
PreorderVisitor = visitor
};
traverser.Traverse(cci.Module.Module);
var classes = visitor.Classes.Where(c => c.Children.Count != 0).ToList();
if (classes.Count != 0)
{
_log.Info("Tests loaded (" + classes.Count + " classes).");
return(new May <TestsLoadContext>(new TestsLoadContext(FrameWorkName, classes)));
}
else
{
_log.Info("No tests found.");
return(May.NoValue);
}
}
/// <summary>
/// decompile byte code to action objects
/// </summary>
public ArrayList Decompile(byte[] codeblock)
{
LabelId = 1;
ArrayList actionRec = ReadActions(codeblock);
ExplodePushLists(actionRec);
// find argument count on stack
// e.g. for actions likecallFunction or initArray
CodeTraverser trav = new CodeTraverser(actionRec);
trav.Traverse(new InvocationExaminer());
return(actionRec);
}
static void Main(string[] args)
{
if (args == null || args.Length == 0)
{
Console.WriteLine("usage: PeToPe [path]fileName.ext [noStack]");
return;
}
bool noStack = args.Length == 2;
using (var host = new PeReader.DefaultHost()) {
//Read the Metadata Model from the PE file
var module = host.LoadUnitFrom(args[0]) as IModule;
if (module == null || module == Dummy.Module || module == Dummy.Assembly)
{
Console.WriteLine(args[0] + " is not a PE file containing a CLR module or assembly.");
return;
}
//Get a PDB reader if there is a PDB file.
PdbReader /*?*/ pdbReader = null;
string pdbFile = Path.ChangeExtension(module.Location, "pdb");
if (File.Exists(pdbFile))
{
Stream pdbStream = File.OpenRead(pdbFile);
pdbReader = new PdbReader(pdbStream, host);
}
using (pdbReader) {
//Construct a Code Model from the Metadata model via decompilation
var options = DecompilerOptions.None;
if (noStack)
{
options |= DecompilerOptions.Unstack;
}
var decompiledModule = Decompiler.GetCodeModelFromMetadataModel(host, module, pdbReader, options);
ISourceLocationProvider sourceLocationProvider = pdbReader; //The decompiler preserves the Locations from the IOperation values, so the PdbReader still works.
//Recompiling the CodeModel to IL might change the IL offsets, so a new provider is needed.
ILocalScopeProvider localScopeProvider = new Decompiler.LocalScopeProvider(pdbReader);
//Get a mutable copy of the Code Model. The ISourceLocationProvider is needed to provide copied source method bodies with the
//ability to find out where to mark sequence points when compiling themselves back into IL.
//(ISourceMethodBody does not know about the Source Model, so this information must be provided explicitly.)
var copier = new CodeDeepCopier(host, sourceLocationProvider);
var mutableModule = copier.Copy(decompiledModule);
//Traverse the mutable copy. In a real application the traversal will collect information to be used during rewriting.
var traverser = new CodeTraverser()
{
PreorderVisitor = new CodeVisitor()
};
traverser.Traverse(mutableModule);
//Rewrite the mutable Code Model. In a real application CodeRewriter would be a subclass that actually does something.
//(This is why decompiled source method bodies must recompile themselves, rather than just use the IL from which they were decompiled.)
var rewriter = new CodeRewriter(host);
var rewrittenModule = rewriter.Rewrite(mutableModule);
//Write out the Code Model by traversing it as the Metadata Model that it also is.
using (var peStream = File.Create(rewrittenModule.Location + ".pe")) {
if (pdbReader == null)
{
PeWriter.WritePeToStream(rewrittenModule, host, peStream);
}
else
{
using (var pdbWriter = new PdbWriter(rewrittenModule.Location + ".pdb", pdbReader)) {
PeWriter.WritePeToStream(rewrittenModule, host, peStream, sourceLocationProvider, localScopeProvider, pdbWriter);
}
}
}
}
}
}