Spring JPA / Hibernate: save Methode arbeitet nicht

S

Schuriko

Bekanntes Mitglied
Ich habe für Sprachen folgende Entity
Code: 
import javax.persistence.Entity;
import javax.persistence.FetchType;
import javax.persistence.GeneratedValue;
import javax.persistence.GenerationType;
import javax.persistence.Id;
import javax.persistence.JoinColumn;
import javax.persistence.ManyToOne;
import javax.persistence.Table;
import javax.validation.constraints.NotNull;

import org.hibernate.annotations.CreationTimestamp;
import org.hibernate.annotations.UpdateTimestamp;

import java.time.LocalDateTime;

@Entity
@Table(name = "languages")
public class Language {
   
    private static final long serialVersionUID = 1L;
   
    @Id
    @GeneratedValue(strategy = GenerationType.AUTO)
    private long id;

    @CreationTimestamp
    private LocalDateTime created_at;
   
    @ManyToOne(fetch=FetchType.LAZY)
    @JoinColumn(name="created_by")
    private User created_by;
     
    @UpdateTimestamp
    private LocalDateTime updated_at;
   
    @ManyToOne(fetch=FetchType.LAZY)
    @JoinColumn(name="updated_by")
    private User updated_by;  
   
    @NotNull
    String name;
   
    @NotNull
    private String iso;

    public Language() {
        super();
    }

    // Getter / Setter
    public long getId() {
        return id;
    }
   
    public void setId(long id) {
        this.id = id;
    }

    public LocalDateTime getCreatedAt() {
        return created_at;
    }

    public void setCreatedAt(LocalDateTime created_at) {
        this.created_at = created_at;
    }

    public User getCreatedBy() {
        return created_by;
    }

    public void setCreatedBy(User created_by) {
        this.created_by = created_by;
    }

    public LocalDateTime getUpdatedAt() {
        return updated_at;
    }

    public void setUpdatedAt(LocalDateTime updated_at) {
        this.updated_at = updated_at;
    }

    public User getUpdatedBy() {
        return updated_by;
    }

    public void setUpdatedBy(User updated_by) {
        this.updated_by = updated_by;
    }

    public String getName() {
        return name;
    }

    public void setName(String name) {
        this.name = name;
    }

    public String getIso() {
        return iso;
    }

    public void setIso(String iso) {
        this.iso = iso;
    }
   
}

mit der Spring CrudRepository
Code: 
import org.springframework.data.repository.CrudRepository;
import org.springframework.stereotype.Repository;

import com.editor.entities.Language;

@Repository
public interface LanguageRepository extends CrudRepository<Language, Long> {

}

Beim Starten meine Spring Boot Anwendung wird folgende data.sql ausgeführt
Code: 
-- Languages --
INSERT INTO `languages` (`id`, `created_at`, `created_by`, `updated_at`, `updated_by`, `name`, `iso`) VALUES(1, CURRENT_TIMESTAMP(), null, CURRENT_TIMESTAMP(), null, 'English', 'en');
INSERT INTO `languages` (`id`, `created_at`, `created_by`, `updated_at`, `updated_by`, `name`, `iso`) VALUES(2, CURRENT_TIMESTAMP(), null, CURRENT_TIMESTAMP(), null, 'Afar', 'aa');
INSERT INTO `languages` (`id`, `created_at`, `created_by`, `updated_at`, `updated_by`, `name`, `iso`) VALUES(3, CURRENT_TIMESTAMP(), null, CURRENT_TIMESTAMP(), null, 'Abkhazian', 'ab');
INSERT INTO `languages` (`id`, `created_at`, `created_by`, `updated_at`, `updated_by`, `name`, `iso`) VALUES(4, CURRENT_TIMESTAMP(), null, CURRENT_TIMESTAMP(), null, 'Afrikaans', 'af');
INSERT INTO `languages` (`id`, `created_at`, `created_by`, `updated_at`, `updated_by`, `name`, `iso`) VALUES(5, CURRENT_TIMESTAMP(), null, CURRENT_TIMESTAMP(), null, 'Amharic', 'am');
INSERT INTO `languages` (`id`, `created_at`, `created_by`, `updated_at`, `updated_by`, `name`, `iso`) VALUES(6, CURRENT_TIMESTAMP(), null, CURRENT_TIMESTAMP(), null, 'Arabic', 'ar');
INSERT INTO `languages` (`id`, `created_at`, `created_by`, `updated_at`, `updated_by`, `name`, `iso`) VALUES(7, CURRENT_TIMESTAMP(), null, CURRENT_TIMESTAMP(), null, 'Assamese', 'as');
INSERT INTO `languages` (`id`, `created_at`, `created_by`, `updated_at`, `updated_by`, `name`, `iso`) VALUES(8, CURRENT_TIMESTAMP(), null, CURRENT_TIMESTAMP(), null, 'Aymara', 'ay');
INSERT INTO `languages` (`id`, `created_at`, `created_by`, `updated_at`, `updated_by`, `name`, `iso`) VALUES(9, CURRENT_TIMESTAMP(), null, CURRENT_TIMESTAMP(), null, 'Azerbaijani', 'az');
INSERT INTO `languages` (`id`, `created_at`, `created_by`, `updated_at`, `updated_by`, `name`, `iso`) VALUES(10, CURRENT_TIMESTAMP(), null, CURRENT_TIMESTAMP(), null, 'Bashkir', 'ba');
INSERT INTO `languages` (`id`, `created_at`, `created_by`, `updated_at`, `updated_by`, `name`, `iso`) VALUES(11, CURRENT_TIMESTAMP(), null, CURRENT_TIMESTAMP(), null, 'Belarusian', 'be');
INSERT INTO `languages` (`id`, `created_at`, `created_by`, `updated_at`, `updated_by`, `name`, `iso`) VALUES(12, CURRENT_TIMESTAMP(), null, CURRENT_TIMESTAMP(), null, 'Bulgarian', 'bg');
INSERT INTO `languages` (`id`, `created_at`, `created_by`, `updated_at`, `updated_by`, `name`, `iso`) VALUES(13, CURRENT_TIMESTAMP(), null, CURRENT_TIMESTAMP(), null, 'Bihari', 'bh');
INSERT INTO `languages` (`id`, `created_at`, `created_by`, `updated_at`, `updated_by`, `name`, `iso`) VALUES(14, CURRENT_TIMESTAMP(), null, CURRENT_TIMESTAMP(), null, 'Bislama', 'bi');
INSERT INTO `languages` (`id`, `created_at`, `created_by`, `updated_at`, `updated_by`, `name`, `iso`) VALUES(15, CURRENT_TIMESTAMP(), null, CURRENT_TIMESTAMP(), null, 'Bengali/Bangla', 'bn');
INSERT INTO `languages` (`id`, `created_at`, `created_by`, `updated_at`, `updated_by`, `name`, `iso`) VALUES(16, CURRENT_TIMESTAMP(), null, CURRENT_TIMESTAMP(), null, 'Tibetan', 'bo');
INSERT INTO `languages` (`id`, `created_at`, `created_by`, `updated_at`, `updated_by`, `name`, `iso`) VALUES(17, CURRENT_TIMESTAMP(), null, CURRENT_TIMESTAMP(), null, 'Breton', 'br');
INSERT INTO `languages` (`id`, `created_at`, `created_by`, `updated_at`, `updated_by`, `name`, `iso`) VALUES(18, CURRENT_TIMESTAMP(), null, CURRENT_TIMESTAMP(), null, 'Catalan', 'ca');
INSERT INTO `languages` (`id`, `created_at`, `created_by`, `updated_at`, `updated_by`, `name`, `iso`) VALUES(19, CURRENT_TIMESTAMP(), null, CURRENT_TIMESTAMP(), null, 'Corsican', 'co');
INSERT INTO `languages` (`id`, `created_at`, `created_by`, `updated_at`, `updated_by`, `name`, `iso`) VALUES(20, CURRENT_TIMESTAMP(), null, CURRENT_TIMESTAMP(), null, 'Czech', 'cs');
INSERT INTO `languages` (`id`, `created_at`, `created_by`, `updated_at`, `updated_by`, `name`, `iso`) VALUES(21, CURRENT_TIMESTAMP(), null, CURRENT_TIMESTAMP(), null, 'Welsh', 'cy');
INSERT INTO `languages` (`id`, `created_at`, `created_by`, `updated_at`, `updated_by`, `name`, `iso`) VALUES(22, CURRENT_TIMESTAMP(), null, CURRENT_TIMESTAMP(), null, 'Danish', 'da');
INSERT INTO `languages` (`id`, `created_at`, `created_by`, `updated_at`, `updated_by`, `name`, `iso`) VALUES(23, CURRENT_TIMESTAMP(), null, CURRENT_TIMESTAMP(), null, 'German', 'de');
INSERT INTO `languages` (`id`, `created_at`, `created_by`, `updated_at`, `updated_by`, `name`, `iso`) VALUES(24, CURRENT_TIMESTAMP(), null, CURRENT_TIMESTAMP(), null, 'Bhutani', 'dz');
INSERT INTO `languages` (`id`, `created_at`, `created_by`, `updated_at`, `updated_by`, `name`, `iso`) VALUES(25, CURRENT_TIMESTAMP(), null, CURRENT_TIMESTAMP(), null, 'Greek', 'el');
INSERT INTO `languages` (`id`, `created_at`, `created_by`, `updated_at`, `updated_by`, `name`, `iso`) VALUES(26, CURRENT_TIMESTAMP(), null, CURRENT_TIMESTAMP(), null, 'Esperanto', 'eo');
INSERT INTO `languages` (`id`, `created_at`, `created_by`, `updated_at`, `updated_by`, `name`, `iso`) VALUES(27, CURRENT_TIMESTAMP(), null, CURRENT_TIMESTAMP(), null, 'Spanish', 'es');
INSERT INTO `languages` (`id`, `created_at`, `created_by`, `updated_at`, `updated_by`, `name`, `iso`) VALUES(28, CURRENT_TIMESTAMP(), null, CURRENT_TIMESTAMP(), null, 'Estonian', 'et');
INSERT INTO `languages` (`id`, `created_at`, `created_by`, `updated_at`, `updated_by`, `name`, `iso`) VALUES(29, CURRENT_TIMESTAMP(), null, CURRENT_TIMESTAMP(), null, 'Basque', 'eu');
INSERT INTO `languages` (`id`, `created_at`, `created_by`, `updated_at`, `updated_by`, `name`, `iso`) VALUES(30, CURRENT_TIMESTAMP(), null, CURRENT_TIMESTAMP(), null, 'Persian', 'fa');
INSERT INTO `languages` (`id`, `created_at`, `created_by`, `updated_at`, `updated_by`, `name`, `iso`) VALUES(31, CURRENT_TIMESTAMP(), null, CURRENT_TIMESTAMP(), null, 'Finnish', 'fi');
INSERT INTO `languages` (`id`, `created_at`, `created_by`, `updated_at`, `updated_by`, `name`, `iso`) VALUES(32, CURRENT_TIMESTAMP(), null, CURRENT_TIMESTAMP(), null, 'Fiji', 'fj');
INSERT INTO `languages` (`id`, `created_at`, `created_by`, `updated_at`, `updated_by`, `name`, `iso`) VALUES(33, CURRENT_TIMESTAMP(), null, CURRENT_TIMESTAMP(), null, 'Faeroese', 'fo');
INSERT INTO `languages` (`id`, `created_at`, `created_by`, `updated_at`, `updated_by`, `name`, `iso`) VALUES(34, CURRENT_TIMESTAMP(), null, CURRENT_TIMESTAMP(), null, 'French', 'fr');
INSERT INTO `languages` (`id`, `created_at`, `created_by`, `updated_at`, `updated_by`, `name`, `iso`) VALUES(35, CURRENT_TIMESTAMP(), null, CURRENT_TIMESTAMP(), null, 'Frisian', 'fy');
INSERT INTO `languages` (`id`, `created_at`, `created_by`, `updated_at`, `updated_by`, `name`, `iso`) VALUES(36, CURRENT_TIMESTAMP(), null, CURRENT_TIMESTAMP(), null, 'Irish', 'ga');
INSERT INTO `languages` (`id`, `created_at`, `created_by`, `updated_at`, `updated_by`, `name`, `iso`) VALUES(37, CURRENT_TIMESTAMP(), null, CURRENT_TIMESTAMP(), null, 'Scots/Gaelic', 'gd');
INSERT INTO `languages` (`id`, `created_at`, `created_by`, `updated_at`, `updated_by`, `name`, `iso`) VALUES(38, CURRENT_TIMESTAMP(), null, CURRENT_TIMESTAMP(), null, 'Galician', 'gl');
INSERT INTO `languages` (`id`, `created_at`, `created_by`, `updated_at`, `updated_by`, `name`, `iso`) VALUES(39, CURRENT_TIMESTAMP(), null, CURRENT_TIMESTAMP(), null, 'Guarani', 'gn');
INSERT INTO `languages` (`id`, `created_at`, `created_by`, `updated_at`, `updated_by`, `name`, `iso`) VALUES(40, CURRENT_TIMESTAMP(), null, CURRENT_TIMESTAMP(), null, 'Gujarati', 'gu');
INSERT INTO `languages` (`id`, `created_at`, `created_by`, `updated_at`, `updated_by`, `name`, `iso`) VALUES(41, CURRENT_TIMESTAMP(), null, CURRENT_TIMESTAMP(), null, 'Hausa', 'ha');
INSERT INTO `languages` (`id`, `created_at`, `created_by`, `updated_at`, `updated_by`, `name`, `iso`) VALUES(42, CURRENT_TIMESTAMP(), null, CURRENT_TIMESTAMP(), null, 'Hindi', 'hi');
INSERT INTO `languages` (`id`, `created_at`, `created_by`, `updated_at`, `updated_by`, `name`, `iso`) VALUES(43, CURRENT_TIMESTAMP(), null, CURRENT_TIMESTAMP(), null, 'Croatian', 'hr');
INSERT INTO `languages` (`id`, `created_at`, `created_by`, `updated_at`, `updated_by`, `name`, `iso`) VALUES(44, CURRENT_TIMESTAMP(), null, CURRENT_TIMESTAMP(), null, 'Hungarian', 'hu');
INSERT INTO `languages` (`id`, `created_at`, `created_by`, `updated_at`, `updated_by`, `name`, `iso`) VALUES(45, CURRENT_TIMESTAMP(), null, CURRENT_TIMESTAMP(), null, 'Armenian', 'hy');
INSERT INTO `languages` (`id`, `created_at`, `created_by`, `updated_at`, `updated_by`, `name`, `iso`) VALUES(46, CURRENT_TIMESTAMP(), null, CURRENT_TIMESTAMP(), null, 'Interlingua', 'ia');
INSERT INTO `languages` (`id`, `created_at`, `created_by`, `updated_at`, `updated_by`, `name`, `iso`) VALUES(47, CURRENT_TIMESTAMP(), null, CURRENT_TIMESTAMP(), null, 'Interlingue', 'ie');
INSERT INTO `languages` (`id`, `created_at`, `created_by`, `updated_at`, `updated_by`, `name`, `iso`) VALUES(48, CURRENT_TIMESTAMP(), null, CURRENT_TIMESTAMP(), null, 'Inupiak', 'ik');
INSERT INTO `languages` (`id`, `created_at`, `created_by`, `updated_at`, `updated_by`, `name`, `iso`) VALUES(49, CURRENT_TIMESTAMP(), null, CURRENT_TIMESTAMP(), null, 'Indonesian', 'in');
INSERT INTO `languages` (`id`, `created_at`, `created_by`, `updated_at`, `updated_by`, `name`, `iso`) VALUES(50, CURRENT_TIMESTAMP(), null, CURRENT_TIMESTAMP(), null, 'Icelandic', 'is');
INSERT INTO `languages` (`id`, `created_at`, `created_by`, `updated_at`, `updated_by`, `name`, `iso`) VALUES(51, CURRENT_TIMESTAMP(), null, CURRENT_TIMESTAMP(), null, 'Italian', 'it');
INSERT INTO `languages` (`id`, `created_at`, `created_by`, `updated_at`, `updated_by`, `name`, `iso`) VALUES(52, CURRENT_TIMESTAMP(), null, CURRENT_TIMESTAMP(), null, 'Hebrew', 'iw');
INSERT INTO `languages` (`id`, `created_at`, `created_by`, `updated_at`, `updated_by`, `name`, `iso`) VALUES(53, CURRENT_TIMESTAMP(), null, CURRENT_TIMESTAMP(), null, 'Japanese', 'ja');
INSERT INTO `languages` (`id`, `created_at`, `created_by`, `updated_at`, `updated_by`, `name`, `iso`) VALUES(54, CURRENT_TIMESTAMP(), null, CURRENT_TIMESTAMP(), null, 'Yiddish', 'ji');
INSERT INTO `languages` (`id`, `created_at`, `created_by`, `updated_at`, `updated_by`, `name`, `iso`) VALUES(55, CURRENT_TIMESTAMP(), null, CURRENT_TIMESTAMP(), null, 'Javanese', 'jw');
INSERT INTO `languages` (`id`, `created_at`, `created_by`, `updated_at`, `updated_by`, `name`, `iso`) VALUES(56, CURRENT_TIMESTAMP(), null, CURRENT_TIMESTAMP(), null, 'Georgian', 'ka');
INSERT INTO `languages` (`id`, `created_at`, `created_by`, `updated_at`, `updated_by`, `name`, `iso`) VALUES(57, CURRENT_TIMESTAMP(), null, CURRENT_TIMESTAMP(), null, 'Kazakh', 'kk');
INSERT INTO `languages` (`id`, `created_at`, `created_by`, `updated_at`, `updated_by`, `name`, `iso`) VALUES(58, CURRENT_TIMESTAMP(), null, CURRENT_TIMESTAMP(), null, 'Greenlandic', 'kl');
INSERT INTO `languages` (`id`, `created_at`, `created_by`, `updated_at`, `updated_by`, `name`, `iso`) VALUES(59, CURRENT_TIMESTAMP(), null, CURRENT_TIMESTAMP(), null, 'Cambodian', 'km');
INSERT INTO `languages` (`id`, `created_at`, `created_by`, `updated_at`, `updated_by`, `name`, `iso`) VALUES(60, CURRENT_TIMESTAMP(), null, CURRENT_TIMESTAMP(), null, 'Kannada', 'kn');
INSERT INTO `languages` (`id`, `created_at`, `created_by`, `updated_at`, `updated_by`, `name`, `iso`) VALUES(61, CURRENT_TIMESTAMP(), null, CURRENT_TIMESTAMP(), null, 'Korean', 'ko');
INSERT INTO `languages` (`id`, `created_at`, `created_by`, `updated_at`, `updated_by`, `name`, `iso`) VALUES(62, CURRENT_TIMESTAMP(), null, CURRENT_TIMESTAMP(), null, 'Kashmiri', 'ks');
INSERT INTO `languages` (`id`, `created_at`, `created_by`, `updated_at`, `updated_by`, `name`, `iso`) VALUES(63, CURRENT_TIMESTAMP(), null, CURRENT_TIMESTAMP(), null, 'Kurdish', 'ku');
INSERT INTO `languages` (`id`, `created_at`, `created_by`, `updated_at`, `updated_by`, `name`, `iso`) VALUES(64, CURRENT_TIMESTAMP(), null, CURRENT_TIMESTAMP(), null, 'Kirghiz', 'ky');
INSERT INTO `languages` (`id`, `created_at`, `created_by`, `updated_at`, `updated_by`, `name`, `iso`) VALUES(65, CURRENT_TIMESTAMP(), null, CURRENT_TIMESTAMP(), null, 'Latin', 'la');
INSERT INTO `languages` (`id`, `created_at`, `created_by`, `updated_at`, `updated_by`, `name`, `iso`) VALUES(66, CURRENT_TIMESTAMP(), null, CURRENT_TIMESTAMP(), null, 'Lingala', 'ln');
INSERT INTO `languages` (`id`, `created_at`, `created_by`, `updated_at`, `updated_by`, `name`, `iso`) VALUES(67, CURRENT_TIMESTAMP(), null, CURRENT_TIMESTAMP(), null, 'Laothian', 'lo');
INSERT INTO `languages` (`id`, `created_at`, `created_by`, `updated_at`, `updated_by`, `name`, `iso`) VALUES(68, CURRENT_TIMESTAMP(), null, CURRENT_TIMESTAMP(), null, 'Lithuanian', 'lt');
INSERT INTO `languages` (`id`, `created_at`, `created_by`, `updated_at`, `updated_by`, `name`, `iso`) VALUES(69, CURRENT_TIMESTAMP(), null, CURRENT_TIMESTAMP(), null, 'Latvian/Lettish', 'lv');
INSERT INTO `languages` (`id`, `created_at`, `created_by`, `updated_at`, `updated_by`, `name`, `iso`) VALUES(70, CURRENT_TIMESTAMP(), null, CURRENT_TIMESTAMP(), null, 'Malagasy', 'mg');
INSERT INTO `languages` (`id`, `created_at`, `created_by`, `updated_at`, `updated_by`, `name`, `iso`) VALUES(71, CURRENT_TIMESTAMP(), null, CURRENT_TIMESTAMP(), null, 'Maori', 'mi');
INSERT INTO `languages` (`id`, `created_at`, `created_by`, `updated_at`, `updated_by`, `name`, `iso`) VALUES(72, CURRENT_TIMESTAMP(), null, CURRENT_TIMESTAMP(), null, 'Macedonian', 'mk');
INSERT INTO `languages` (`id`, `created_at`, `created_by`, `updated_at`, `updated_by`, `name`, `iso`) VALUES(73, CURRENT_TIMESTAMP(), null, CURRENT_TIMESTAMP(), null, 'Malayalam', 'ml');
INSERT INTO `languages` (`id`, `created_at`, `created_by`, `updated_at`, `updated_by`, `name`, `iso`) VALUES(74, CURRENT_TIMESTAMP(), null, CURRENT_TIMESTAMP(), null, 'Mongolian', 'mn');
INSERT INTO `languages` (`id`, `created_at`, `created_by`, `updated_at`, `updated_by`, `name`, `iso`) VALUES(75, CURRENT_TIMESTAMP(), null, CURRENT_TIMESTAMP(), null, 'Moldavian', 'mo');
INSERT INTO `languages` (`id`, `created_at`, `created_by`, `updated_at`, `updated_by`, `name`, `iso`) VALUES(76, CURRENT_TIMESTAMP(), null, CURRENT_TIMESTAMP(), null, 'Marathi', 'mr');
INSERT INTO `languages` (`id`, `created_at`, `created_by`, `updated_at`, `updated_by`, `name`, `iso`) VALUES(77, CURRENT_TIMESTAMP(), null, CURRENT_TIMESTAMP(), null, 'Malay', 'ms');
INSERT INTO `languages` (`id`, `created_at`, `created_by`, `updated_at`, `updated_by`, `name`, `iso`) VALUES(78, CURRENT_TIMESTAMP(), null, CURRENT_TIMESTAMP(), null, 'Maltese', 'mt');
INSERT INTO `languages` (`id`, `created_at`, `created_by`, `updated_at`, `updated_by`, `name`, `iso`) VALUES(79, CURRENT_TIMESTAMP(), null, CURRENT_TIMESTAMP(), null, 'Burmese', 'my');
INSERT INTO `languages` (`id`, `created_at`, `created_by`, `updated_at`, `updated_by`, `name`, `iso`) VALUES(80, CURRENT_TIMESTAMP(), null, CURRENT_TIMESTAMP(), null, 'Nauru', 'na');
INSERT INTO `languages` (`id`, `created_at`, `created_by`, `updated_at`, `updated_by`, `name`, `iso`) VALUES(81, CURRENT_TIMESTAMP(), null, CURRENT_TIMESTAMP(), null, 'Nepali', 'ne');
INSERT INTO `languages` (`id`, `created_at`, `created_by`, `updated_at`, `updated_by`, `name`, `iso`) VALUES(82, CURRENT_TIMESTAMP(), null, CURRENT_TIMESTAMP(), null, 'Dutch', 'nl');
INSERT INTO `languages` (`id`, `created_at`, `created_by`, `updated_at`, `updated_by`, `name`, `iso`) VALUES(83, CURRENT_TIMESTAMP(), null, CURRENT_TIMESTAMP(), null, 'Norwegian', 'no');
INSERT INTO `languages` (`id`, `created_at`, `created_by`, `updated_at`, `updated_by`, `name`, `iso`) VALUES(84, CURRENT_TIMESTAMP(), null, CURRENT_TIMESTAMP(), null, 'Occitan', 'oc');
INSERT INTO `languages` (`id`, `created_at`, `created_by`, `updated_at`, `updated_by`, `name`, `iso`) VALUES(85, CURRENT_TIMESTAMP(), null, CURRENT_TIMESTAMP(), null, '(Afan)/Oromoor/Oriya', 'om');
INSERT INTO `languages` (`id`, `created_at`, `created_by`, `updated_at`, `updated_by`, `name`, `iso`) VALUES(86, CURRENT_TIMESTAMP(), null, CURRENT_TIMESTAMP(), null, 'Punjabi', 'pa');
INSERT INTO `languages` (`id`, `created_at`, `created_by`, `updated_at`, `updated_by`, `name`, `iso`) VALUES(87, CURRENT_TIMESTAMP(), null, CURRENT_TIMESTAMP(), null, 'Polish', 'pl');
INSERT INTO `languages` (`id`, `created_at`, `created_by`, `updated_at`, `updated_by`, `name`, `iso`) VALUES(88, CURRENT_TIMESTAMP(), null, CURRENT_TIMESTAMP(), null, 'Pashto/Pushto', 'ps');
INSERT INTO `languages` (`id`, `created_at`, `created_by`, `updated_at`, `updated_by`, `name`, `iso`) VALUES(89, CURRENT_TIMESTAMP(), null, CURRENT_TIMESTAMP(), null, 'Portuguese', 'pt');
INSERT INTO `languages` (`id`, `created_at`, `created_by`, `updated_at`, `updated_by`, `name`, `iso`) VALUES(90, CURRENT_TIMESTAMP(), null, CURRENT_TIMESTAMP(), null, 'Quechua', 'qu');
INSERT INTO `languages` (`id`, `created_at`, `created_by`, `updated_at`, `updated_by`, `name`, `iso`) VALUES(91, CURRENT_TIMESTAMP(), null, CURRENT_TIMESTAMP(), null, 'Rhaeto-Romance', 'rm');
INSERT INTO `languages` (`id`, `created_at`, `created_by`, `updated_at`, `updated_by`, `name`, `iso`) VALUES(92, CURRENT_TIMESTAMP(), null, CURRENT_TIMESTAMP(), null, 'Kirundi', 'rn');
INSERT INTO `languages` (`id`, `created_at`, `created_by`, `updated_at`, `updated_by`, `name`, `iso`) VALUES(93, CURRENT_TIMESTAMP(), null, CURRENT_TIMESTAMP(), null, 'Romanian', 'ro');
INSERT INTO `languages` (`id`, `created_at`, `created_by`, `updated_at`, `updated_by`, `name`, `iso`) VALUES(94, CURRENT_TIMESTAMP(), null, CURRENT_TIMESTAMP(), null, 'Russian', 'ru');
INSERT INTO `languages` (`id`, `created_at`, `created_by`, `updated_at`, `updated_by`, `name`, `iso`) VALUES(95, CURRENT_TIMESTAMP(), null, CURRENT_TIMESTAMP(), null, 'Kinyarwanda', 'rw');
INSERT INTO `languages` (`id`, `created_at`, `created_by`, `updated_at`, `updated_by`, `name`, `iso`) VALUES(96, CURRENT_TIMESTAMP(), null, CURRENT_TIMESTAMP(), null, 'Sanskrit', 'sa');
INSERT INTO `languages` (`id`, `created_at`, `created_by`, `updated_at`, `updated_by`, `name`, `iso`) VALUES(97, CURRENT_TIMESTAMP(), null, CURRENT_TIMESTAMP(), null, 'Sindhi', 'sd');
INSERT INTO `languages` (`id`, `created_at`, `created_by`, `updated_at`, `updated_by`, `name`, `iso`) VALUES(98, CURRENT_TIMESTAMP(), null, CURRENT_TIMESTAMP(), null, 'Sangro', 'sg');
INSERT INTO `languages` (`id`, `created_at`, `created_by`, `updated_at`, `updated_by`, `name`, `iso`) VALUES(99, CURRENT_TIMESTAMP(), null, CURRENT_TIMESTAMP(), null, 'Serbo-Croatian', 'sh');
INSERT INTO `languages` (`id`, `created_at`, `created_by`, `updated_at`, `updated_by`, `name`, `iso`) VALUES(100, CURRENT_TIMESTAMP(), null, CURRENT_TIMESTAMP(), null, 'Singhalese', 'si');
INSERT INTO `languages` (`id`, `created_at`, `created_by`, `updated_at`, `updated_by`, `name`, `iso`) VALUES(101, CURRENT_TIMESTAMP(), null, CURRENT_TIMESTAMP(), null, 'Slovak', 'sk');
INSERT INTO `languages` (`id`, `created_at`, `created_by`, `updated_at`, `updated_by`, `name`, `iso`) VALUES(102, CURRENT_TIMESTAMP(), null, CURRENT_TIMESTAMP(), null, 'Slovenian', 'sl');
INSERT INTO `languages` (`id`, `created_at`, `created_by`, `updated_at`, `updated_by`, `name`, `iso`) VALUES(103, CURRENT_TIMESTAMP(), null, CURRENT_TIMESTAMP(), null, 'Samoan', 'sm');
INSERT INTO `languages` (`id`, `created_at`, `created_by`, `updated_at`, `updated_by`, `name`, `iso`) VALUES(104, CURRENT_TIMESTAMP(), null, CURRENT_TIMESTAMP(), null, 'Shona', 'sn');
INSERT INTO `languages` (`id`, `created_at`, `created_by`, `updated_at`, `updated_by`, `name`, `iso`) VALUES(105, CURRENT_TIMESTAMP(), null, CURRENT_TIMESTAMP(), null, 'Somali', 'so');
INSERT INTO `languages` (`id`, `created_at`, `created_by`, `updated_at`, `updated_by`, `name`, `iso`) VALUES(106, CURRENT_TIMESTAMP(), null, CURRENT_TIMESTAMP(), null, 'Albanian', 'sq');
INSERT INTO `languages` (`id`, `created_at`, `created_by`, `updated_at`, `updated_by`, `name`, `iso`) VALUES(107, CURRENT_TIMESTAMP(), null, CURRENT_TIMESTAMP(), null, 'Serbian', 'sr');
INSERT INTO `languages` (`id`, `created_at`, `created_by`, `updated_at`, `updated_by`, `name`, `iso`) VALUES(108, CURRENT_TIMESTAMP(), null, CURRENT_TIMESTAMP(), null, 'Siswati', 'ss');
INSERT INTO `languages` (`id`, `created_at`, `created_by`, `updated_at`, `updated_by`, `name`, `iso`) VALUES(109, CURRENT_TIMESTAMP(), null, CURRENT_TIMESTAMP(), null, 'Sesotho', 'st');
INSERT INTO `languages` (`id`, `created_at`, `created_by`, `updated_at`, `updated_by`, `name`, `iso`) VALUES(110, CURRENT_TIMESTAMP(), null, CURRENT_TIMESTAMP(), null, 'Sundanese', 'su');
INSERT INTO `languages` (`id`, `created_at`, `created_by`, `updated_at`, `updated_by`, `name`, `iso`) VALUES(111, CURRENT_TIMESTAMP(), null, CURRENT_TIMESTAMP(), null, 'Swedish', 'sv');
INSERT INTO `languages` (`id`, `created_at`, `created_by`, `updated_at`, `updated_by`, `name`, `iso`) VALUES(112, CURRENT_TIMESTAMP(), null, CURRENT_TIMESTAMP(), null, 'Swahili', 'sw');
INSERT INTO `languages` (`id`, `created_at`, `created_by`, `updated_at`, `updated_by`, `name`, `iso`) VALUES(113, CURRENT_TIMESTAMP(), null, CURRENT_TIMESTAMP(), null, 'Tamil', 'ta');
INSERT INTO `languages` (`id`, `created_at`, `created_by`, `updated_at`, `updated_by`, `name`, `iso`) VALUES(114, CURRENT_TIMESTAMP(), null, CURRENT_TIMESTAMP(), null, 'Telugu', 'te');
INSERT INTO `languages` (`id`, `created_at`, `created_by`, `updated_at`, `updated_by`, `name`, `iso`) VALUES(115, CURRENT_TIMESTAMP(), null, CURRENT_TIMESTAMP(), null, 'Tajik', 'tg');
INSERT INTO `languages` (`id`, `created_at`, `created_by`, `updated_at`, `updated_by`, `name`, `iso`) VALUES(116, CURRENT_TIMESTAMP(), null, CURRENT_TIMESTAMP(), null, 'Thai', 'th');
INSERT INTO `languages` (`id`, `created_at`, `created_by`, `updated_at`, `updated_by`, `name`, `iso`) VALUES(117, CURRENT_TIMESTAMP(), null, CURRENT_TIMESTAMP(), null, 'Tigrinya', 'ti');
INSERT INTO `languages` (`id`, `created_at`, `created_by`, `updated_at`, `updated_by`, `name`, `iso`) VALUES(118, CURRENT_TIMESTAMP(), null, CURRENT_TIMESTAMP(), null, 'Turkmen', 'tk');
INSERT INTO `languages` (`id`, `created_at`, `created_by`, `updated_at`, `updated_by`, `name`, `iso`) VALUES(119, CURRENT_TIMESTAMP(), null, CURRENT_TIMESTAMP(), null, 'Tagalog', 'tl');
INSERT INTO `languages` (`id`, `created_at`, `created_by`, `updated_at`, `updated_by`, `name`, `iso`) VALUES(120, CURRENT_TIMESTAMP(), null, CURRENT_TIMESTAMP(), null, 'Setswana', 'tn');
INSERT INTO `languages` (`id`, `created_at`, `created_by`, `updated_at`, `updated_by`, `name`, `iso`) VALUES(121, CURRENT_TIMESTAMP(), null, CURRENT_TIMESTAMP(), null, 'Tonga', 'to');
INSERT INTO `languages` (`id`, `created_at`, `created_by`, `updated_at`, `updated_by`, `name`, `iso`) VALUES(122, CURRENT_TIMESTAMP(), null, CURRENT_TIMESTAMP(), null, 'Turkish', 'tr');
INSERT INTO `languages` (`id`, `created_at`, `created_by`, `updated_at`, `updated_by`, `name`, `iso`) VALUES(123, CURRENT_TIMESTAMP(), null, CURRENT_TIMESTAMP(), null, 'Tsonga', 'ts');
INSERT INTO `languages` (`id`, `created_at`, `created_by`, `updated_at`, `updated_by`, `name`, `iso`) VALUES(124, CURRENT_TIMESTAMP(), null, CURRENT_TIMESTAMP(), null, 'Tatar', 'tt');
INSERT INTO `languages` (`id`, `created_at`, `created_by`, `updated_at`, `updated_by`, `name`, `iso`) VALUES(125, CURRENT_TIMESTAMP(), null, CURRENT_TIMESTAMP(), null, 'Twi', 'tw');
INSERT INTO `languages` (`id`, `created_at`, `created_by`, `updated_at`, `updated_by`, `name`, `iso`) VALUES(126, CURRENT_TIMESTAMP(), null, CURRENT_TIMESTAMP(), null, 'Ukrainian', 'uk');
INSERT INTO `languages` (`id`, `created_at`, `created_by`, `updated_at`, `updated_by`, `name`, `iso`) VALUES(127, CURRENT_TIMESTAMP(), null, CURRENT_TIMESTAMP(), null, 'Urdu', 'ur');
INSERT INTO `languages` (`id`, `created_at`, `created_by`, `updated_at`, `updated_by`, `name`, `iso`) VALUES(128, CURRENT_TIMESTAMP(), null, CURRENT_TIMESTAMP(), null, 'Uzbek', 'uz');
INSERT INTO `languages` (`id`, `created_at`, `created_by`, `updated_at`, `updated_by`, `name`, `iso`) VALUES(129, CURRENT_TIMESTAMP(), null, CURRENT_TIMESTAMP(), null, 'Vietnamese', 'vi');
INSERT INTO `languages` (`id`, `created_at`, `created_by`, `updated_at`, `updated_by`, `name`, `iso`) VALUES(130, CURRENT_TIMESTAMP(), null, CURRENT_TIMESTAMP(), null, 'Volapuk', 'vo');
INSERT INTO `languages` (`id`, `created_at`, `created_by`, `updated_at`, `updated_by`, `name`, `iso`) VALUES(131, CURRENT_TIMESTAMP(), null, CURRENT_TIMESTAMP(), null, 'Wolof', 'wo');
INSERT INTO `languages` (`id`, `created_at`, `created_by`, `updated_at`, `updated_by`, `name`, `iso`) VALUES(132, CURRENT_TIMESTAMP(), null, CURRENT_TIMESTAMP(), null, 'Xhosa', 'xh');
INSERT INTO `languages` (`id`, `created_at`, `created_by`, `updated_at`, `updated_by`, `name`, `iso`) VALUES(133, CURRENT_TIMESTAMP(), null, CURRENT_TIMESTAMP(), null, 'Yoruba', 'yo');
INSERT INTO `languages` (`id`, `created_at`, `created_by`, `updated_at`, `updated_by`, `name`, `iso`) VALUES(134, CURRENT_TIMESTAMP(), null, CURRENT_TIMESTAMP(), null, 'Chinese', 'zh');
INSERT INTO `languages` (`id`, `created_at`, `created_by`, `updated_at`, `updated_by`, `name`, `iso`) VALUES(135, CURRENT_TIMESTAMP(), null, CURRENT_TIMESTAMP(), null, 'Zulu', 'zu');

Bis hierhin funktioniert auch alles. Nun wollte ich einen Test auf insert durchführen. Hierzu habe ich folgende JUnit4 / 5 Test Klasse
Code: 
import static org.junit.jupiter.api.Assertions.*;

import java.util.Optional;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.boot.test.context.SpringBootTest;

import com.editor.repositories.LanguageRepository;

import org.junit.jupiter.api.Test;

/**
* testing the language repository
*/
@SpringBootTest
class LanguageTest {
   
    @Autowired
    LanguageRepository languageRepository;
   
    /**
     * test to insert language
     */
    @Test
    void testInsertLanguage() {
        String name    = "name";
        String iso    = "iso";
       
        // create language
        Language language = new Language();
       
        language.setName(name);
        language.setIso(iso);
       
        languageRepository.save(language);  // HIER TRITT DER FEHLER AUF
       
        // test
        Optional<Language> foundLanguage = languageRepository.findById(language.getId());
       
        assertTrue(foundLanguage.isPresent());
        assertNotNull(foundLanguage.get().getCreatedAt());
        assertNotNull(foundLanguage.get().getUpdatedAt());  
        assertEquals(foundLanguage.get().getName(), name);
        assertEquals(foundLanguage.get().getIso(), iso);
       
        // cleanUp
        // languageRepository.deleteById(language.getId());
    }

}

Beim Ausführen des Test wird mir allerdings gesagt
org.springframework.dao.DataIntegrityViolationException: could not execute statement; SQL [n/a]; constraint [PRIMARY]; nested exception is org.hibernate.exception.ConstraintViolationException: could not execute statement
at org.springframework.orm.jpa.vendor.HibernateJpaDialect.convertHibernateAccessException(HibernateJpaDialect.java:298)
at org.springframework.orm.jpa.vendor.HibernateJpaDialect.translateExceptionIfPossible(HibernateJpaDialect.java:255)
at org.springframework.orm.jpa.JpaTransactionManager.doCommit(JpaTransactionManager.java:538)
at org.springframework.transaction.support.AbstractPlatformTransactionManager.processCommit(AbstractPlatformTransactionManager.java:744)
at org.springframework.transaction.support.AbstractPlatformTransactionManager.commit(AbstractPlatformTransactionManager.java:712)
at org.springframework.transaction.interceptor.TransactionAspectSupport.commitTransactionAfterReturning(TransactionAspectSupport.java:631)
at org.springframework.transaction.interceptor.TransactionAspectSupport.invokeWithinTransaction(TransactionAspectSupport.java:385)
at org.springframework.transaction.interceptor.TransactionInterceptor.invoke(TransactionInterceptor.java:99)
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:186)
at org.springframework.dao.support.PersistenceExceptionTranslationInterceptor.invoke(PersistenceExceptionTranslationInterceptor.java:139)
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:186)
at org.springframework.data.jpa.repository.support.CrudMethodMetadataPostProcessor$CrudMethodMetadataPopulatingMethodInterceptor.invoke(CrudMethodMetadataPostProcessor.java:178)
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:186)
at org.springframework.aop.interceptor.ExposeInvocationInterceptor.invoke(ExposeInvocationInterceptor.java:93)
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:186)
at org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:212)
at com.sun.proxy.$Proxy111.save(Unknown Source)
at com.metho.builder.entities.LanguageTest.testInsertLanguage(LanguageTest.java:44)
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.base/java.lang.reflect.Method.invoke(Method.java:567)
at org.junit.platform.commons.util.ReflectionUtils.invokeMethod(ReflectionUtils.java:532)
at org.junit.jupiter.engine.execution.ExecutableInvoker.invoke(ExecutableInvoker.java:115)
at org.junit.jupiter.engine.descriptor.TestMethodTestDescriptor.lambda$invokeTestMethod$6(TestMethodTestDescriptor.java:171)
at org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:72)
at org.junit.jupiter.engine.descriptor.TestMethodTestDescriptor.invokeTestMethod(TestMethodTestDescriptor.java:167)
at org.junit.jupiter.engine.descriptor.TestMethodTestDescriptor.execute(TestMethodTestDescriptor.java:114)
at org.junit.jupiter.engine.descriptor.TestMethodTestDescriptor.execute(TestMethodTestDescriptor.java:59)
at org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$4(NodeTestTask.java:108)
at org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:72)
at org.junit.platform.engine.support.hierarchical.NodeTestTask.executeRecursively(NodeTestTask.java:98)
at org.junit.platform.engine.support.hierarchical.NodeTestTask.execute(NodeTestTask.java:74)
at java.base/java.util.ArrayList.forEach(ArrayList.java:1540)
at org.junit.platform.engine.support.hierarchical.SameThreadHierarchicalTestExecutorService.invokeAll(SameThreadHierarchicalTestExecutorService.java:38)
at org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$4(NodeTestTask.java:112)
at org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:72)
at org.junit.platform.engine.support.hierarchical.NodeTestTask.executeRecursively(NodeTestTask.java:98)
at org.junit.platform.engine.support.hierarchical.NodeTestTask.execute(NodeTestTask.java:74)
at java.base/java.util.ArrayList.forEach(ArrayList.java:1540)
at org.junit.platform.engine.support.hierarchical.SameThreadHierarchicalTestExecutorService.invokeAll(SameThreadHierarchicalTestExecutorService.java:38)
at org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$4(NodeTestTask.java:112)
at org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:72)
at org.junit.platform.engine.support.hierarchical.NodeTestTask.executeRecursively(NodeTestTask.java:98)
at org.junit.platform.engine.support.hierarchical.NodeTestTask.execute(NodeTestTask.java:74)
at org.junit.platform.engine.support.hierarchical.SameThreadHierarchicalTestExecutorService.submit(SameThreadHierarchicalTestExecutorService.java:32)
at org.junit.platform.engine.support.hierarchical.HierarchicalTestExecutor.execute(HierarchicalTestExecutor.java:57)
at org.junit.platform.engine.support.hierarchical.HierarchicalTestEngine.execute(HierarchicalTestEngine.java:51)
at org.junit.platform.launcher.core.DefaultLauncher.execute(DefaultLauncher.java:229)
at org.junit.platform.launcher.core.DefaultLauncher.lambda$execute$6(DefaultLauncher.java:197)
at org.junit.platform.launcher.core.DefaultLauncher.withInterceptedStreams(DefaultLauncher.java:211)
at org.junit.platform.launcher.core.DefaultLauncher.execute(DefaultLauncher.java:191)
at org.junit.platform.launcher.core.DefaultLauncher.execute(DefaultLauncher.java:137)
at org.eclipse.jdt.internal.junit5.runner.JUnit5TestReference.run(JUnit5TestReference.java:89)
at org.eclipse.jdt.internal.junit.runner.TestExecution.run(TestExecution.java:41)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:541)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:763)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:463)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRunner.java:209)
Caused by: org.hibernate.exception.ConstraintViolationException: could not execute statement
at org.hibernate.exception.internal.SQLExceptionTypeDelegate.convert(SQLExceptionTypeDelegate.java:59)
at org.hibernate.exception.internal.StandardSQLExceptionConverter.convert(StandardSQLExceptionConverter.java:42)
at org.hibernate.engine.jdbc.spi.SqlExceptionHelper.convert(SqlExceptionHelper.java:113)
at org.hibernate.engine.jdbc.spi.SqlExceptionHelper.convert(SqlExceptionHelper.java:99)
at org.hibernate.engine.jdbc.internal.ResultSetReturnImpl.executeUpdate(ResultSetReturnImpl.java:200)
at org.hibernate.persister.entity.AbstractEntityPersister.insert(AbstractEntityPersister.java:3208)
at org.hibernate.persister.entity.AbstractEntityPersister.insert(AbstractEntityPersister.java:3722)
at org.hibernate.action.internal.EntityInsertAction.execute(EntityInsertAction.java:91)
at org.hibernate.engine.spi.ActionQueue.executeActions(ActionQueue.java:604)
at org.hibernate.engine.spi.ActionQueue.lambda$executeActions$1(ActionQueue.java:478)
at java.base/java.util.LinkedHashMap.forEach(LinkedHashMap.java:684)
at org.hibernate.engine.spi.ActionQueue.executeActions(ActionQueue.java:475)
at org.hibernate.event.internal.AbstractFlushingEventListener.performExecutions(AbstractFlushingEventListener.java:348)
at org.hibernate.event.internal.DefaultFlushEventListener.onFlush(DefaultFlushEventListener.java:40)
at org.hibernate.event.service.internal.EventListenerGroupImpl.fireEventOnEachListener(EventListenerGroupImpl.java:108)
at org.hibernate.internal.SessionImpl.doFlush(SessionImpl.java:1344)
at org.hibernate.internal.SessionImpl.managedFlush(SessionImpl.java:435)
at org.hibernate.internal.SessionImpl.flushBeforeTransactionCompletion(SessionImpl.java:3221)
at org.hibernate.internal.SessionImpl.beforeTransactionCompletion(SessionImpl.java:2389)
at org.hibernate.engine.jdbc.internal.JdbcCoordinatorImpl.beforeTransactionCompletion(JdbcCoordinatorImpl.java:447)
at org.hibernate.resource.transaction.backend.jdbc.internal.JdbcResourceLocalTransactionCoordinatorImpl.beforeCompletionCallback(JdbcResourceLocalTransactionCoordinatorImpl.java:183)
at org.hibernate.resource.transaction.backend.jdbc.internal.JdbcResourceLocalTransactionCoordinatorImpl.access$300(JdbcResourceLocalTransactionCoordinatorImpl.java:40)
at org.hibernate.resource.transaction.backend.jdbc.internal.JdbcResourceLocalTransactionCoordinatorImpl$TransactionDriverControlImpl.commit(JdbcResourceLocalTransactionCoordinatorImpl.java:281)
at org.hibernate.engine.transaction.internal.TransactionImpl.commit(TransactionImpl.java:101)
at org.springframework.orm.jpa.JpaTransactionManager.doCommit(JpaTransactionManager.java:534)
... 56 more
Caused by: java.sql.SQLIntegrityConstraintViolationException: Duplicate entry '1' for key 'PRIMARY'
at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:117)
at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97)
at com.mysql.cj.jdbc.exceptions.SQLExceptionsMapping.translateException(SQLExceptionsMapping.java:122)
at com.mysql.cj.jdbc.ClientPreparedStatement.executeInternal(ClientPreparedStatement.java:953)
at com.mysql.cj.jdbc.ClientPreparedStatement.executeUpdateInternal(ClientPreparedStatement.java:1092)
at com.mysql.cj.jdbc.ClientPreparedStatement.executeUpdateInternal(ClientPreparedStatement.java:1040)
at com.mysql.cj.jdbc.ClientPreparedStatement.executeLargeUpdate(ClientPreparedStatement.java:1347)
at com.mysql.cj.jdbc.ClientPreparedStatement.executeUpdate(ClientPreparedStatement.java:1025)
at com.zaxxer.hikari.pool.ProxyPreparedStatement.executeUpdate(ProxyPreparedStatement.java:61)
at com.zaxxer.hikari.pool.HikariProxyPreparedStatement.executeUpdate(HikariProxyPreparedStatement.java)
at org.hibernate.engine.jdbc.internal.ResultSetReturnImpl.executeUpdate(ResultSetReturnImpl.java:197)
... 76 more
Zum Vergrößern anklicken....

Nehme ich die data.sql raus, dann wird der Test korrekt, ohne Fehlermeldung, durchgeführt.
 
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D Spring Anfänger benötigt Hilfe Frameworks - Spring, Play, Blade, Vaadin & Co 9
OnDemand Spring Boot seltsame Logeinträge: Manipulationsversuche? Frameworks - Spring, Play, Blade, Vaadin & Co 2
D Spring Date keine neue Tabelle fuer Attribut Frameworks - Spring, Play, Blade, Vaadin & Co 1
T Spring Security Config File anpassen Frameworks - Spring, Play, Blade, Vaadin & Co 1
8u3631984 Spring Cloud : Resttemplate mit Loadballancer Frameworks - Spring, Play, Blade, Vaadin & Co 11
Dimax Spring resource not found Frameworks - Spring, Play, Blade, Vaadin & Co 2
M Spring MongoDB unique index Frameworks - Spring, Play, Blade, Vaadin & Co 3
M Spring Entity testen Frameworks - Spring, Play, Blade, Vaadin & Co 1
M Spring Entity testen Frameworks - Spring, Play, Blade, Vaadin & Co 5
Dimax Spring App Probleme beim Ausführen auf dem Tomcat Server Frameworks - Spring, Play, Blade, Vaadin & Co 1
D Spring WebFlux Cors konfigurieren Frameworks - Spring, Play, Blade, Vaadin & Co 1
Dimax Schöne View mit anchor scrolling in Spring Frameworks - Spring, Play, Blade, Vaadin & Co 2
Dimax Spring JPA Multiple Keys Frameworks - Spring, Play, Blade, Vaadin & Co 3
S Spring Security mit oauth2 in lokaler Konfiguration principal mocken Frameworks - Spring, Play, Blade, Vaadin & Co 0
D Spring Boot Mile Stone und Snapshot Versionen Frameworks - Spring, Play, Blade, Vaadin & Co 2
OnDemand Spring Boot Exception Body Frameworks - Spring, Play, Blade, Vaadin & Co 2

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