public void MutantPlacer_ShouldPlaceWithConditionalExpression(int id)
{
// 1 + 8;
var originalNode = SyntaxFactory.BinaryExpression(SyntaxKind.AddExpression,
SyntaxFactory.LiteralExpression(SyntaxKind.NumericLiteralExpression, SyntaxFactory.Literal(1)),
SyntaxFactory.LiteralExpression(SyntaxKind.NumericLiteralExpression, SyntaxFactory.Literal(8)));
// 1 - 8;
var mutatedNode = SyntaxFactory.BinaryExpression(SyntaxKind.SubtractExpression,
SyntaxFactory.LiteralExpression(SyntaxKind.NumericLiteralExpression, SyntaxFactory.Literal(1)),
SyntaxFactory.LiteralExpression(SyntaxKind.NumericLiteralExpression, SyntaxFactory.Literal(8)));
var mutants = new List <(Mutant, ExpressionSyntax)> {
(new Mutant {
Id = id, Mutation = new Mutation {
ReplacementNode = mutatedNode
}
}, mutatedNode)
};
var result = MutantPlacer.PlaceExpressionControlledMutations(originalNode, mutants);
result.ToFullString()
.ShouldBeSemantically(@$ "({CodeInjection.HelperNamespace}.MutantControl.IsActive({id})?1-8:1+8)");
var removedResult = MutantPlacer.RemoveMutant(result);
removedResult.ToString().ShouldBeSemantically(originalNode.ToString());
}
/// <inheritdoc/>
/// <remarks>Inject all pending mutations controlled with conditional operator(s).</remarks>
protected override ExpressionSyntax InjectMutations(T sourceNode, ExpressionSyntax targetNode, MutationContext context)
{
var result = MutantPlacer.PlaceExpressionControlledMutations(
targetNode,
context.ExpressionLevelMutations.Select(m => (m.Id, (ExpressionSyntax)sourceNode.InjectMutation(m.Mutation)))) as T;
context.ExpressionLevelMutations.Clear();
return(result);
}