public void ShouldNotMutateStringLiteralInOtherConstructor()
{
var objectCreationExpression = SyntaxFactory.ParseExpression("new Other(@\"^abc\")") as ObjectCreationExpressionSyntax;
var target = new RegexMutator();
var result = target.ApplyMutations(objectCreationExpression);
result.ShouldBeEmpty();
}
public void ShouldNotMutateRegexWithoutParameters()
{
var objectCreationExpression = SyntaxFactory.ParseExpression("new Regex()") as ObjectCreationExpressionSyntax;
var target = new RegexMutator();
var result = target.ApplyMutations(objectCreationExpression);
result.ShouldBeEmpty();
}
public void ShouldMutateStringLiteralAsNamedArgumentPatternInRegexConstructor()
{
var objectCreationExpression = SyntaxFactory.ParseExpression("new Regex(options: RegexOptions.None, pattern: @\"^abc\")") as ObjectCreationExpressionSyntax;
var target = new RegexMutator();
var result = target.ApplyMutations(objectCreationExpression);
var mutation = result.ShouldHaveSingleItem();
mutation.DisplayName.ShouldBe("Regex anchor removal mutation");
var replacement = mutation.ReplacementNode.ShouldBeOfType <LiteralExpressionSyntax>();
replacement.Token.ValueText.ShouldBe("abc");
}
public void ShouldMutateStringLiteralInRegexConstructorWithFullName()
{
var objectCreationExpression = SyntaxFactory.ParseExpression("new System.Text.RegularExpressions.Regex(@\"^abc\")") as ObjectCreationExpressionSyntax;
var target = new RegexMutator();
var result = target.ApplyMutations(objectCreationExpression);
var mutation = result.ShouldHaveSingleItem();
mutation.DisplayName.ShouldBe("Regex anchor removal mutation");
var replacement = mutation.ReplacementNode.ShouldBeOfType <LiteralExpressionSyntax>();
replacement.Token.ValueText.ShouldBe("abc");
}
public void ShouldMutateStringLiteralMultipleTimes()
{
var objectCreationExpression = SyntaxFactory.ParseExpression("new Regex(@\"^abc$\")") as ObjectCreationExpressionSyntax;
var target = new RegexMutator();
var result = target.ApplyMutations(objectCreationExpression);
result.Count().ShouldBe(2);
result.ShouldAllBe(mutant => mutant.DisplayName == "Regex anchor removal mutation");
var first = result.First().ReplacementNode.ShouldBeOfType <LiteralExpressionSyntax>();
var last = result.Last().ReplacementNode.ShouldBeOfType <LiteralExpressionSyntax>();
first.Token.ValueText.ShouldBe("abc$");
last.Token.ValueText.ShouldBe("^abc");
}
public void ShouldBeMutationlevelAdvanced()
{
var target = new RegexMutator();
target.MutationLevel.ShouldBe(MutationLevel.Advanced);
}
