TranslateServiceTest.groovy

@SpringBootTest
class TranslateServiceTest extends Specification {
    @Autowired
    TranslateService translateService

    def "translate text expected succeed"() {
        when:
        def result = translateService.translate("Hello World", Language.ENGLISH, Language.SPANISH)
        then:
        result == "Hola Mundo"
    }

    def "translate text wrong source and target language expected null"() {
        when:
        def result = translateService.translate("Bonjour le monde", Language.FRENCH, Language.SPANISH)
        then:
        result == null
    }

    def "translate text expected null"() {
        when:
        def result = translateService.translate("", Language.ENGLISH, Language.SPANISH)
        then:
        result == null
    }
}