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 *  regarding copyright ownership.  The ASF licenses this file
 *  to you under the Apache License, Version 2.0 (the
 *  "License"); you may not use this file except in compliance
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 *
 *    https://www.apache.org/licenses/LICENSE-2.0
 *
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package org.grails.datastore.gorm

import org.apache.grails.data.testing.tck.domains.Person
import org.apache.grails.data.simple.core.GrailsDataCoreTckManager
import org.apache.grails.data.testing.tck.base.GrailsDataTckSpec

class DistinctProjectionSpec extends GrailsDataTckSpec<GrailsDataCoreTckManager> {

    def "Test that using the distinct projection returns distinct results"() {
        given: "Some people with the same last names"
        new Person(firstName: "Homer", lastName: "Simpson").save()
        new Person(firstName: "Bart", lastName: "Simpson").save()
        new Person(firstName: "Barney", lastName: "Rubble").save(flush: true)

        when: "We query with criteria for distinct surnames"
        def results = Person.withCriteria {
            projections {
                distinct "lastName"
            }
        }.sort()

        then: "The correct results are returned"
        results == ['Rubble', 'Simpson']
    }
}
