generator-jhipster: EntityResourceIntTest Failures with Required Relationships

Overview of the issue

There are out-of-the-box test failures when generating entities with required relationships.

Motivation for or Use Case

Tests should not fail on a fresh generated project.

JHipster Version(s)

Master, 3.2.0+ (required relationships added)

JHipster configuration, a .yo-rc.json file generated in the root folder

{
  "generator-jhipster": {
    "jhipsterVersion": "3.4.2",
    "baseName": "test",
    "packageName": "com.mycompany.myapp",
    "packageFolder": "com/mycompany/myapp",
    "serverPort": "8080",
    "authenticationType": "session",
    "hibernateCache": "ehcache",
    "clusteredHttpSession": "no",
    "websocket": "no",
    "databaseType": "sql",
    "devDatabaseType": "h2Disk",
    "prodDatabaseType": "mysql",
    "searchEngine": "no",
    "buildTool": "maven",
    "enableSocialSignIn": false,
    "rememberMeKey": "8c073c30fd56d34230694bc40fb1ec253d47c7d7",
    "useSass": false,
    "applicationType": "monolith",
    "testFrameworks": [
      "gatling"
    ],
    "jhiPrefix": "jhi",
    "enableTranslation": true,
    "nativeLanguage": "en",
    "languages": [
      "en"
    ]
  }
}

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

Foo

{
    "relationships": [
        {
            "relationshipName": "foo",
            "otherEntityName": "foo",
            "relationshipType": "one-to-many",
            "otherEntityRelationshipName": "bar"
        }
    ],
    "fields": [
        {
            "fieldName": "name",
            "fieldType": "String"
        }
    ],
    "changelogDate": "20160624065546",
    "dto": "mapstruct",
    "service": "serviceClass",
    "entityTableName": "bar",
    "pagination": "pagination"
}

Bar

{
    "relationships": [
        {
            "relationshipName": "bar",
            "otherEntityName": "bar",
            "relationshipType": "many-to-one",
            "relationshipValidateRules": [
                "required"
            ],
            "otherEntityField": "name"
        }
    ],
    "fields": [
        {
            "fieldName": "name",
            "fieldType": "String"
        }
    ],
    "changelogDate": "20160624065503",
    "dto": "mapstruct",
    "service": "serviceClass",
    "entityTableName": "foo",
    "pagination": "pagination"
}

Reproduce the error

Generate the above entities (or any with a required relationship) and run mvn test

Related issues

#1843 - talks about string length and regex validation. There is a note about validation failing is documented in the Validation section https://jhipster.github.io/creating-an-entity/:

JHipster generates unit tests that work for generic entities, without knowing your validation rules: it is possible that the generated tests do not pass the validation rules. In that case, you will need to update the sample values used in your unit tests, so that they pass the validation rules.

Suggest a Fix

Since a Bar entity is required to create/update a Foo entity, I was able to get FooResouceIntTest.java working by creating a Bar in setup(), then adding it to the initTest() and updateFoo() tests. I also needed to inject BarMapper and BarService.

The other option would be to close this issue and point at the documentation, though fixing the tests requires more work than just updating the sample values.