SpringBoot：使用Cassandra进行单元测试

Question

I'd like to test my SpringBoot application that uses cassandra as a CrudRepository. I ended up with

/*
 * https://github.com/jsevellec/cassandra-unit/wiki/Spring-for-Cassandra-unit
 */
@RunWith(SpringJUnit4ClassRunner.class)
@ComponentScan
@ContextConfiguration(value = { "classpath:/default-context.xml" })
@TestExecutionListeners({ CassandraUnitTestExecutionListener.class })
@CassandraDataSet(value = { "setupTables.cql" }, keyspace = "keyspaceToCreate")
@CassandraUnit
public class ApplicationTests {

    @Autowired
    MyCassandraRepository repo;

    @Test
    public void contextLoads() {

        System.out.println(repo.findAll());

    }

}

with

    <dependency>
        <groupId>org.cassandraunit</groupId>
        <artifactId>cassandra-unit-spring</artifactId>
        <version>3.0.0.1</version>
        <scope>test</scope>
    </dependency>

and

CREATE TABLE MY_CASSANDRA_ENTRY (
  MY_CASS_STRING varchar PRIMARY KEY
)

This leads to

com.datastax.driver.core.exceptions.NoHostAvailableException: All host(s) tried for query failed (tried: localhost/127.0.0.1:9142 (com.datastax.driver.core.exceptions.InvalidQueryException: unconfigured table schema_keyspaces))

If I use an older version of cassandra-unit-spring

    <dependency>
        <groupId>org.cassandraunit</groupId>
        <artifactId>cassandra-unit-spring</artifactId>
        <version>2.1.9.2</version>
        <scope>test</scope>
    </dependency>

it ends with a NullPointerException because the value repo is not injected.

Sources https://github.com/StephanPraetsch/spring.boot.cassandra.unit.test

Answer 1

CassandraUnit starts on port 9142 . Spring Boot defaults to port 9042 . You need to set the port and the keyspace name so the Cassandra driver can pickup the right connection details.

You need to change two things in your test:

1. Please use @SpringBootTest instead of @EnableAutoConfiguration . That enables a couple of other things like configuration property support which you will need in step 2.

2. Create src/test/resources/application.properties and set the port and keyspace name.

spring.data.cassandra.port=9142
spring.data.cassandra.keyspace-name=keyspaceToCreate

This will configure the correct port and keyspace.

Alternatively, you could specify properties using

@SpringBootTest({"spring.data.cassandra.port=9142",
                 "spring.data.cassandra.keyspace-name=keyspaceToCreate"})

Answer 2

I suppose version 3.x of cassandra-unit-spring is incompatible for me. Better 2.x.

With 2.x there is an error log

15:10:23.366 [pool-1-thread-1] ERROR org.apache.cassandra.service.CassandraDaemon - cassandra.jmx.local.port missing from cassandra-env.sh, unable to start local JMX service.null

Answer 3

@RunWith(SpringJUnit4ClassRunner.class)
@SpringBootTest({ "spring.data.cassandra.port=9142",
        "spring.data.cassandra.keyspace-name=keyspaceToCreate" })
@EnableAutoConfiguration
@ComponentScan
@ContextConfiguration
@TestExecutionListeners({ CassandraUnitDependencyInjectionTestExecutionListener.class,
        DependencyInjectionTestExecutionListener.class })
@CassandraDataSet(value = { "setupTables.cql" }, keyspace = "keyspaceToCreate")
@CassandraUnit
public class ApplicationTests {

    @Autowired
    MyCassandraRepository repo;

    @Test
    public void contextLoads() {

        System.out.println(repo.findAll());

    }

}

and

    <dependency>
        <groupId>org.cassandraunit</groupId>
        <artifactId>cassandra-unit-spring</artifactId>
        <version>2.1.9.2</version>
        <scope>test</scope>
    </dependency>

works.

But if upgrade to

    <dependency>
        <groupId>org.cassandraunit</groupId>
        <artifactId>cassandra-unit-spring</artifactId>
        <version>3.0.0.1</version>
        <scope>test</scope>
    </dependency>

again I get the error

com.datastax.driver.core.exceptions.NoHostAvailableException: All host(s) tried for query failed (tried: localhost/127.0.0.1:9142 (com.datastax.driver.core.exceptions.InvalidQueryException: unconfigured table schema_keyspaces))