[jira] [Created] (GROOVY-9519) CLIBuilder: Option with "type: Integer, defaultValue '0'" results in Boolean if default value is applied

["Dirk Heinrichs (Jira)" <ji...@apache.org>]

Dirk Heinrichs created GROOVY-9519:
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             Summary: CLIBuilder: Option with "type: Integer, defaultValue '0'" results in Boolean if default value is applied
                 Key: GROOVY-9519
                 URL: https://issues.apache.org/jira/browse/GROOVY-9519
             Project: Groovy
          Issue Type: Bug
          Components: command line processing
    Affects Versions: 3.0.2
         Environment: WIndows/Linux
            Reporter: Dirk Heinrichs


When using an option with {{type: Integer}} and {{defaultValue: '0'}} the resulting variable is of type Boolean if the option is not specified on the command line. Here's a little Groovy program to demonstrate the issue:
{code:java}
@Grab('info.picocli:picocli-groovy:4.2.0')
@GrabConfig(systemClassLoader=true)

import groovy.cli.picocli.CliBuilder

def cli = new CliBuilder(name: 'cliTest.groovy')
cli.h(type: Boolean, longOpt: 'help', usageHelp: true, required: false, 'Show usage information')
cli.i(type: Integer, longOpt: 'intTest', required: false, args: 1, defaultValue: '0', 'Testing integer with default value 0')
def opts = cli.parse(args)
opts || System.exit(1)
if(opts.h) {
  cli.usage()
  System.exit(0)
}

println(opts.i.getClass())
println(opts.i)
// Need to explicitely convert if default value applies
def i = (opts.i instanceof Boolean ? 0 : opts.i)
println(i.getClass())
println(i){code}

Executing this w/o providing {{-i}} prints:
{code}% ~/tmp/groovy-3.0.2/bin/groovy ./cliTest.groovy 
class java.lang.Boolean
false
class java.lang.Integer
0{code}

But if {{-i}} IS provided (even with the same value as the default), it correctly prints:
{code}% ~/tmp/groovy-3.0.2/bin/groovy ./cliTest.groovy -i 0
class java.lang.Integer
0
class java.lang.Integer
0{code}

I would expect the type of {{opts.i}} to be Integer in both cases.

NOTE: I've opened the same for PicoCLI, since I wasn't sure where it belongs.



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