[GROOVY-11186] Support spread method arguments for iterable, iterator and stream

• Type: Improvement
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 4.0.13
• Fix Version/s: 5.0.0-alpha-7
• Assignee: Eric Milles
• Reporter: Christopher Smith
• Created: 02/Oct/23 19:09
• Updated: 24/Mar/24 23:12
• Resolved: 09/Mar/24 22:37

Description

In a Spock test case, I am trying to merge the e-mail addresses for two test users, where emails is of declared type java.util.Set:

methodCall([*BOB.emails, *BRAD.emails])

I expected the spread to inline the values, but instead I get

java.lang.IllegalArgumentException: cannot spread the type java.util.LinkedHashSet with value [[e-mail]]