Unit Test failire: javax.persistence.TransactionRequiredException: No EntityManager with actual transaction available for current thread

Overview of the issue

I am using JHipster Generator v4.0.7 and I create an entity like that:

entity Country {
	id Long, 
	name String required
}

entity Zone {
	id Long, 
	name String required 
}

relationship OneToMany {

  Zone to Country{zone(name) required},
}

When I generate the code, JHipster generator generate failed unit test. I have this stacktrace:

 -------------------------------------------------------------------------------
Test set: xxx.yyy.zzz.CountryResourceIntTest
-------------------------------------------------------------------------------
Tests run: 11, Failures: 0, Errors: 1, Skipped: 0, Time elapsed: 1.134 sec <<< FAILURE! - in xxx.yyy.zzz.web.rest.CountryResourceIntTest
equalsVerifier(xxx.yyy.zzz.web.rest.CountryResourceIntTest)  Time elapsed: 0.054 sec  <<< ERROR!
javax.persistence.TransactionRequiredException: No EntityManager with actual transaction available for current thread - cannot reliably process 'persist' call
	at org.springframework.orm.jpa.SharedEntityManagerCreator$SharedEntityManagerInvocationHandler.invoke(SharedEntityManagerCreator.java:282)
	at com.sun.proxy.$Proxy165.persist(Unknown Source)
	at fr.accs.advalorem.web.rest.CountryResourceIntTest.createEntity(CountryResourceIntTest.java:101)
	at xxx.yyy.zzz.web.rest.CountryResourceIntTest.initTest(CountryResourceIntTest.java:115)

It seems that equalsVerifier method should be @Transactional because it call the @Before method

Suggest a Fix

Replace

    @Test
    public void equalsVerifier() throws Exception {
        TestUtil.equalsVerifier(Country.class);
    }

By

    @Test
    @Transactional
    public void equalsVerifier() throws Exception {
        TestUtil.equalsVerifier(Country.class);
    }

JHipster Version(s)

JHipster generator v4.0.7

Entity configuration(s) entityName.json files generated in the .jhipster directory

Country.json:

{
    "fluentMethods": true,
    "relationships": [
        {
            "relationshipType": "many-to-one",
            "relationshipValidateRules": "required",
            "relationshipName": "zone",
            "otherEntityName": "zone",
            "otherEntityField": "name"
        }
    ],
    "fields": [
        {
            "fieldName": "name",
            "fieldType": "String",
            "fieldValidateRules": [
                "required"
            ]
        }
    ],
    "changelogDate": "20170307151049",
    "entityTableName": "country",
    "dto": "no",
    "pagination": "pager",
    "service": "serviceImpl"
}

Zone.json

{
    "fluentMethods": true,
    "relationships": [
        {
            "relationshipType": "one-to-many",
            "relationshipName": "country",
            "otherEntityName": "country",
            "otherEntityRelationshipName": "zone"
        }
    ],
    "fields": [
        {
            "fieldName": "name",
            "fieldType": "String",
            "fieldValidateRules": [
                "required"
            ]
        }
    ],
    "changelogDate": "20170307151049",
    "entityTableName": "zone",
    "dto": "no",
    "pagination": "pager",
    "service": "serviceImpl"
}

• [ X] Checking this box is mandatory (this is just to show you read everything)

[pascalgrimaud]

I understand why our Travis build didn’t detect that:

• there are no test with "relationshipValidateRules": "required" in our entities in travis/samples/.jhipster/
• see the search: https://github.com/jhipster/generator-jhipster/search?utf8=✓&q=relationshipValidateRules
• clearly, we have to add that

[jdubois]

Thanks @pascalgrimaud !!! This was worrying me, I’m happy to have the answer.