HHH-14724 Test-case demonstrating compilation issues with converters and validation

Author: theigl

tooling/metamodel-generator/hibernate-jpamodelgen.gradle

@@ -30,6 +30,7 @@ dependencies {
 
     testCompile libraries.junit
     testCompile libraries.jpa
+	testCompile libraries.validation
     testCompile project( ':hibernate-core' )
 }
 

tooling/metamodel-generator/src/test/java/org/hibernate/jpamodelgen/test/collectionbasictype/Goods.java

@@ -10,6 +10,7 @@
 import javax.persistence.Entity;
 import javax.persistence.Id;
 import javax.persistence.OneToMany;
+import javax.validation.constraints.NotNull;
 import java.util.List;
 
 /**
@@ -39,6 +40,7 @@ public void setProductList(List<Product> productList) {
         this.productList = productList;
     }
 
+    @NotNull
     @Convert(converter = StringToListConverter.class)
     public List<String> getTags() {
         return tags;