public async Task FindSource_WithInvalidCursorPosition_ReturnsNoValue()
{
var searcher = new ExpressionSearcher();
var result = await searcher.FindSource(
solution: DefaultSolution(),
activeDocument: DefaultActiveDocument(),
cursorPosition: InvalidCursorPosition());
Assert.IsNull(result);
}
public async Task FindSource_LookingForExpression_ReturnsTheExpression()
{
var searcher = new ExpressionSearcher();
var expression = "\"text\".ToString().ToString()";
var file = @"
public void Do() {
var result = " + expression + @";
}";
var activeDocument = DefaultActiveDocument();
var result = await searcher.FindSource(
solution: SingleFileSolution(file),
activeDocument: DefaultActiveDocument(),
cursorPosition: file.IndexOf(expression));
Assert.AreEqual(expression, result.GetText().ToString());
}
public async Task<string> GenerateViewAsync(string solutionPath, string activeDocument = null, int cursorPosition = -1)
{
var view = string.Empty;
using (var tempDirectory = new TempDirectory())
{
try
{
var workspace = MSBuildWorkspace.Create();
var solution = await workspace.OpenSolutionAsync(solutionPath);
var newSolution = solution.GetIsolatedSolution();
var expressionSearcher = new ExpressionSearcher();
var expressionBuilder = new ExpressionBuilder();
var source = await expressionSearcher.FindSource(newSolution, activeDocument, cursorPosition);
var target = await expressionSearcher.FindTarget(newSolution);
var instrumentation = await expressionBuilder.BuildWrapper(source);
var newCompilation = expressionSearcher.InsertNodeInCompilation(target.Compilation, target.Node, instrumentation);
var instrumentedDll = Path.Combine(tempDirectory.FullName, Path.GetRandomFileName() + ".dll");
var emitResult = newCompilation.Emit(instrumentedDll);
if (emitResult.Success)
{
using (var assemblyRunner = new AssemblyRunner())
{
var result = assemblyRunner.Run(instrumentedDll, "WrapperClass", "WrapperMethod");
view = result;
}
}
else
{
view = string.Join(Environment.NewLine, emitResult.Diagnostics);
}
}
catch (Exception exception)
{
Console.WriteLine(exception.ToString());
view = exception.ToString();
}
}
return view;
}
public async Task InsertNodeInCompilation_WithOldAndNewNodes_LeavesOldClassInPlace()
{
var searcher = new ExpressionSearcher();
var oldClassName = "SimpleClass";
var solution = SingleFileSolution(@"
namespace " + oldClassName + @" {
public class SimpleClass() {
public void Do() {
}
}
}");
var target = await searcher.FindTarget(solution);
SyntaxNode newNode = SyntaxFactory.ClassDeclaration("NewNode");
var newCompilation = searcher.InsertNodeInCompilation(target.Compilation, target.Node, newNode);
var classes = GetClassDeclarationSyntaxes(newCompilation);
Assert.AreEqual(1, classes.Count(classSyntax => classSyntax.Identifier.Text == oldClassName));
}
public async Task InsertNodeInCompilation_WithOldAndNewNodes_ReturnsNewUpdatedCompilation()
{
var searcher = new ExpressionSearcher();
var solution = SingleFileSolution(@"
namespace SimpleNamespace {
public class SimpleClass() {
public void Do() {
}
}
}");
var target = await searcher.FindTarget(solution);
SyntaxNode newNode = SyntaxFactory.ClassDeclaration("NewNode");
var newCompilation = searcher.InsertNodeInCompilation(target.Compilation, target.Node, newNode);
Assert.AreNotEqual(target.Compilation, newCompilation);
}
public async Task FindTarget_WithNamespaceInFileSolution_ReturnsTarget()
{
var searcher = new ExpressionSearcher();
var solution = SingleFileSolution(@"
namespace SimpleNamespace {
public class SimpleClass() {
public void Do() {
}
}
}");
var result = await searcher.FindTarget(solution);
Assert.IsTrue(result.Node is ClassDeclarationSyntax);
Assert.IsNotNull(result.Compilation);
}
public async Task FindTarget_WithEmptySolution_ReturnsNoValue()
{
var searcher = new ExpressionSearcher();
var solution = EmptySolution();
var result = await searcher.FindTarget(solution);
Assert.IsNull(result.Node);
Assert.IsNull(result.Compilation);
}
public async Task FindSource_MethodWithMultipleExpressions_ReturnsTheRequestedExpression()
{
var expressions = new[]
{
"\"text1\".ToString().ToString()",
"\"text2\".ToString().ToString()",
"\"text3\".ToString().ToString()"
};
var file = @"
public string Do()
{
var result1 = " + expressions[0] + @";
var result2 = " + expressions[1] + @";
return " + expressions[2] + @";
}";
foreach (var expression in expressions)
{
var searcher = new ExpressionSearcher();
var result = await searcher.FindSource(
solution: SingleFileSolution(file),
activeDocument: DefaultActiveDocument(),
cursorPosition: file.IndexOf(expression));
Assert.AreEqual(expression, result.GetText().ToString());
}
}
public async Task FindSource_WithBadCursorPosition_ReturnsNoValue()
{
var searcher = new ExpressionSearcher();
var expression = "\"text\".ToString().ToString()";
var file = @"
public void Do() {
var result = " + expression + @";
}";
var activeDocument = DefaultActiveDocument();
var result = await searcher.FindSource(
solution: SingleFileSolution(file),
activeDocument: DefaultActiveDocument(),
cursorPosition: file.IndexOf(expression) - 1);
Assert.IsNull(result);
}