Different behavior between tests and Dev instance

Hi everyone
I'm having a hard time figuring out why pattern isn't detected in test run (i use tdd).
I'm trying to get a pattern working inside a stream lambda, and this is my test file:

package org.apache.ofbiz;

import org.apache.ofbiz.entity.Delegator;
import org.apache.ofbiz.entity.GenericEntityException;
import org.apache.ofbiz.entity.GenericValue;
import org.apache.ofbiz.entity.util.EntityQuery;
import org.apache.ofbiz.service.LocalDispatcher;
import java.util.List;

public class EntityFieldCompletionInGetFieldInFilterStream {
    void testFunction(LocalDispatcher disp) throws GenericEntityException {
        Delegator delegator = disp.getDelegator();
        List<GenericValue> ents = EntityQuery.use(delegator).from("Party").queryList();
        ents.stream().filter(ent -> ent.get("<caret>") != null);
    }
}

Now this doesn't work.
Here is my pattern

public static final String GENERIC_ENTITY_CLASS = 'org.apache.ofbiz.entity.GenericEntity'

public static final PsiElementPattern ENTITY_FIELD_COMPL = psiElement().inside(GENERIC_VALUE_FIELD)

public static final PsiElementPattern GENERIC_VALUE_FIELD = psiElement().andOr(
    makeGenericEntityJavaMethodPattern('get', 0),
    //...
}
static Capture<PsiLiteralExpression> makeGenericEntityJavaMethodPattern(String methodName, int index) {
    return makeMethodJavaPattern(methodName, GENERIC_ENTITY_CLASS, index)
}

static Capture<PsiLiteralExpression> makeMethodJavaPattern(String methodName, String className, int index) {
    return makeMethodPattern(PsiJavaPatterns::literalExpression(), methodName, className, index)
}

static Object makeMethodPattern(PsiJavaElementPattern<? extends PsiLiteral, ?> elementPattern,
        String methodName, String className, int index) {
return elementPattern.methodCallParameter(index, PsiJavaPatterns.psiMethod().withName(methodName).definedInClass(className))
}

I use the ENTITY_FIELD_COMPL pattern for registering completion contributor.

Now, with the test file, the pattern doesn't seem to work, but when i launch the dev instance with the exact same method, the pattern works.

The only difference between the dev instance and the test file are the class name, and the package name.
Does anyone has an idea ?