Inconsistent test cases for Conan #643
Description
As I am trying to update a purl library implementation to pass the new test set I'm running into problems with https://github.com/package-url/purl-spec/blob/main/tests/types/conan-test.json.
Trying to reverse engineer a validation rule it seems to me that a number of test cases suggest that for pkg:conan the presence of a namespace requires the presence of a channel qualifier (and vice versa) 1, 2, 3, 4. Please correct me if I'm wrong!
If such a validation rule is to be enforced then this test case should be an expected_failure I think (missing channel qualifier despite namespace). I think the same is true for this and this as well.