when:
        repository.put('class', value)

        then:
        repository.find('class') == value
        repository.get('class') == value
    }

    def findReturnsNullForUnknownClass() {
        expect:
        repository.find('unknown') == null
    }

    def getFailsForUnknownClass() {
        given:
        repository.put('unkown', new TestDomainObject('unknown'))