What steps will reproduce the problem? If possible, provide source code and stack trace. 1. putting import spock.lang.Requires in test code gives error that Groovy: unable to resolve spock.lang.Requires 2.look inside both spock-core-0.7-groovy-2.0.jar and spock-core-0.7-groovy-1.8.jar and the spock.lag.Requires.class file is missing 3.

What version of Spock and Groovy are you using? Spock - 0.7 Groovy 2.0 and 1.8

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@Requires was added after the 0.7 release, and can be found in the 1.0-SNAPSHOT release, which lives in the sonatype repo:

http://oss.sonatype.org/content/repositories/snapshots/

Thank you.

It would be nice if this fact was mentioned in the documentation.