CodeNarc failing on DuplicateStringLiteral rule for strings included in ignoreStrings

Question

I'm using the CodeNarc plug for Gradle with CodeNarc 1.1. I am using the DuplicateStringLiteral rule and passing in ignoreStrings: ['1', '2'] in the config file but the rule is not respecting the values I'm passing in. It's a groovy config file, section looks like:

DuplicateStringLiteral (
        ignoreStrings: ['1', '2']
)

I am also using DuplicateNumberLiteral and defined the ignoreNumbers property the same way and that seems to be working fine, so I don't think I have the syntax wrong. The report seems to pick up the ignored values as well as it shows this line in the definition for the rule:

The ignoreStrings property ([1, 2]) can optionally specify a comma-separated list of Strings to ignore.

Anyone see what I'm doing wrong here?

Answer 1

The documentation shows the default value of ignoreStrings to be an empty String... not an empty List. This makes me think that when it says The optional comma-separated list of Strings that should be ignored (i.e., not cause a violation)., it means to put the list (note lack of capitalization) of comma-separated strings in a single String value for the property.

TL;DR Try:

DuplicateStringLiteral (
        ignoreStrings: '1,2'
)