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JoinTest.java
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JoinTest.java
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package example;
import org.junit.jupiter.api.BeforeAll;
import org.junit.jupiter.api.Test;
import org.junit.jupiter.api.TestInstance;
import org.neo4j.driver.Config;
import org.neo4j.driver.Driver;
import org.neo4j.driver.GraphDatabase;
import org.neo4j.driver.Session;
import org.neo4j.harness.Neo4j;
import org.neo4j.harness.Neo4jBuilders;
import static org.assertj.core.api.Assertions.assertThat;
@TestInstance(TestInstance.Lifecycle.PER_CLASS)
public class JoinTest {
private static final Config driverConfig = Config.builder().withoutEncryption().build();
private Neo4j embeddedDatabaseServer;
@BeforeAll
void initializeNeo4j() {
this.embeddedDatabaseServer = Neo4jBuilders.newInProcessBuilder()
.withDisabledServer()
.withFunction(Join.class)
.build();
}
@Test
void joinsStrings() {
// This is in a try-block, to make sure we close the driver after the test
try(Driver driver = GraphDatabase.driver(embeddedDatabaseServer.boltURI(), driverConfig);
Session session = driver.session()) {
// When
String result = session.run( "RETURN example.join(['Hello', 'World']) AS result").single().get("result").asString();
// Then
assertThat( result).isEqualTo(( "Hello,World" ));
}
}
}