public void Modify_WithNullArgument_ThrowsArgumentNullException()
{
var fakeFilter = A.Fake <IContentFilter>();
var filterModification = new XElementFilterModification(fakeFilter);
Assert.Throws <ArgumentNullException>(() => filterModification.Modify(null));
}
public void Modify_WithMatchingElement_ReturnsElement()
{
var fakeElement = A.Fake <XElement>(x => x.WithArgumentsForConstructor(() => new XElement("test")));
var fakeFilter = A.Fake <IContentFilter>();
A.CallTo(() => fakeFilter.PassesFilter(A <string> .Ignored)).Returns(true);
var modification = new XElementFilterModification(fakeFilter);
var result = modification.Modify(fakeElement);
Assert.Same(fakeElement, result);
}
public void Modify_WithNonMatchingElement_ReturnsNullAndRemovesFromParent()
{
var fakeDocument = new XDocument();
var fakeElement = new XElement("test");
var rootElement = new XElement("root");
rootElement.Add(fakeElement);
fakeDocument.Add(rootElement);
var fakeFilter = A.Fake <IContentFilter>();
A.CallTo(() => fakeFilter.PassesFilter(fakeElement.Value)).Returns(false);
var modification = new XElementFilterModification(fakeFilter);
var result = modification.Modify(fakeElement);
Assert.Null(result);
Assert.Equal(0, fakeDocument.Descendants().Count());
}