How to specify character encoding for h2 in memory database scripts? - jpa

Question

I have troubles with character encoding in my JPA test class.
In my h2 in memory database I have this insert query :
INSERT INTO MYTABLE (ID,FIELD1,FIELD2) VALUES (100,'ABC','Réclamation');
(please notice the "é" character in "Réclamation")
In my JUnit Test, I try to assert that the value of FIELD2 column is equal to "Réclamation" (which is the case as you can see)
But it fails with the following error :
org.junit.ComparisonFailure: expected:R[é]clamation but
was: R[�]clamation
I wonder if there is a way to specify character encoding in persistence.xml file (maybe ? or somewhere else)
Here is my persistence.xml test file :
<?xml version="1.0" encoding="UTF-8"?>
<persistence
version="2.1"
xmlns="http://xmlns.jcp.org/xml/ns/persistence"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/persistence
http://xmlns.jcp.org/xml/ns/persistence/persistence_2_1.xsd">
<persistence-unit name="myTestPU">
<provider>org.hibernate.jpa.HibernatePersistenceProvider</provider>
<class>com.myproject.myclass1</class>
<class>com.myproject.myclass2</class>
<properties>
<property
name="javax.persistence.schema-generation.database.action"
value="none" />
<property
name="javax.persistence.sharedCache.mode"
value="ENABLE_SELECTIVE" />
<property
name="javax.persistence.jdbc.url"
value="jdbc:h2:mem:test;INIT=RUNSCRIPT FROM 'classpath:ddl/schema.sql'\;RUNSCRIPT FROM 'classpath:ddl/data.sql'" />
<property
name="javax.persistence.jdbc.driver"
value="org.h2.Driver" />
<property
name="hibernate.dialect"
value="org.hibernate.dialect.H2Dialect" />
<property
name="hibernate.show_sql"
value="true" />
<property
name="hibernate.format_sql"
value="true" />
</properties>
</persistence-unit>
</persistence>
I've already tried these solutions :
adding the following properties in persistence.xml test file :
<property
name="hibernate.connection.characterEncoding"
value="utf8" />
<property
name="hibernate.connection.useUnicode"
value="true" />
<property
name="hibernate.connection.charSet"
value="UTF-8" />
adding ?useUnicode=yes&characterEncoding=UTF-8 in my URL property
None of them worked for me...
NB : I don't use spring framework in my application

Answer 1

I had my insert queries in an import.sql file and those values were encoded incorrectly.
Adding the property
<property name="hibernate.hbm2ddl.charset_name" value="UTF-8" />
fixed it for me.
If you have an older version of hibernate (pre 5.2.3 apparently), maybe try the other solutions in this thread:
Hibernate/JPA import.sql utf8 characters corrupted