How to test XELement and its child elements?

Question

I have a sample Xml code snippet

<modification name="givenName" operation="add" xmlns="urn:oasis:names:tc:DSML:2:0:core">
    <value>Changed name</value>
</modification> 

The xml is loaded to my XElement, and I used

        XElement xml = ...to load xml above...;
        xml.Should().HaveAttribute("name", "givenName")
            .And.HaveAttribute("operation", "add")
            .And.HaveAttribute("xmlns", "urn:oasis:names:tc:DSML:2:0:core")
            .And.HaveElement("value");

to test my code, the attributes testing are all passed, but the element testing (the last condition) fails.

Anyone can point out what is wrong with my code?

And how can I test the Xml has an element named "value" and its value is "Changed name"?

Thanks in advance!

Answer 1

I suspect the problem is that the XName of the element isn't just value - it's value with a namespace. Presumably HaveElement is namespace-aware. Try this:

XElement xml = ...to load xml above...;
XNamespace ns = "urn:oasis:names:tc:DSML:2:0:core";
xml.Should().HaveAttribute("name", "givenName")
    .And.HaveAttribute("operation", "add")
    .And.HaveAttribute("xmlns", "urn:oasis:names:tc:DSML:2:0:core")
    .And.HaveElement(ns + "value");

The last line checks whether it's got the namespace-qualified element.

Answer 2

It's going to be part of Fluent Assertions 2.1. If you can't wait you can get it through the Git repository