SuccinctRoles.is_delegated_role() add a test case

[MVrachev]

Description of the changes being introduced by the pull request:

Add a test case when there is a bin name with the desired prefix, but
which cannot be cast to a hexadecimal number.

Signed-off-by: Martin Vrachev mvrachev@vmware.com

Please verify and check that the pull request fulfills the following
requirements:

• The code follows the Code Style Guidelines
• Tests have been added for the bug fix or new feature
• Docs have been added for the bug fix or new feature

[coveralls]

Pull Request Test Coverage Report for Build 2556102272

• 0 of 0 changed or added relevant lines in 0 files are covered.
• No unchanged relevant lines lost coverage.
• Overall coverage increased (+0.1%) to 98.129%

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Totals
Change from base Build 2541050218:	0.1%
Covered Lines:	1303
Relevant Lines:	1319

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💛 - Coveralls

[jku]

Looks good.

Looking at these two cases:

    "bin-s",
    "bin-0t",

is the difference that first one fails because of length already and second one fails at hex parsing stage?

[MVrachev]

Looks good.

Looking at these two cases:

    "bin-s",
    "bin-0t",

is the difference that first one fails because of length already and second one fails at hex parsing stage?

Yes, exactly that is the difference.