Adding namespaces

[mbuechmann]

Support of namespaces is added to all matchers. Usage of namespaces os optional so that there are no breaking api changes. Specs and examples are included and namespaces are documented in the README.

[wiggly]

I have just started using this but I'm wondering if this wouldn't be better implemented as another matcher.

i.e. with_namespace(NS) in the same manner as with_attribute and with_text are currently done?

[mbuechmann]

That would indeed be better for the user. Unfortunately xpath expressions do not match when a namespace is left out.

E.g. this spec

doc = '<foo xmlns="bar"></foo>'
expect(doc).to have_xpath('/foo')

would fail, because no namespace is given.

So this spec

doc = '<foo xmlns="bar"></foo>'
expect(doc).to have_xpath('/a:foo').with_namespace(:a => 'bar')

still fails as the first matcher fails.

I am not sure, but I do not think that it is possible to have one matcher modify another matcher. The second matcher had to inject the namespace into the first one. (aside from being a bit ugly)