A test with guava and scala modules which fails due to order of module registration

JacksonMultiMapTest.scala

package com.wixpress.report

import com.fasterxml.jackson.databind.{DeserializationFeature, ObjectMapper}
import com.fasterxml.jackson.datatype.guava.GuavaModule
import com.fasterxml.jackson.module.scala.DefaultScalaModule
import org.junit._
import Assert._

/**
 * @author: ittaiz
 * @since: 8/7/13
 */
class JacksonMultiMapTest {

  @Test
  def blowsUpWhenScalaIsSecond() = {
    val objectMapper = new ObjectMapper
    objectMapper.registerModule(new GuavaModule)
    objectMapper.registerModule(new DefaultScalaModule)
    val objectReader = objectMapper.reader.without(DeserializationFeature.FAIL_ON_UNKNOWN_PROPERTIES)
    val source: String = "{\"headers\":{\"key1\": [\"value1\"] }}"

    val pojoWithMultiMap : PojoWithMultiMap = objectReader.readValue(objectReader.treeAsTokens(objectReader.readTree(source)),
      objectMapper.getTypeFactory.constructType(classOf[PojoWithMultiMap]))
    assertNotNull(pojoWithMultiMap)
  }
  @Test
  def worksFineWhenScalaIsFirst() = {
    val objectMapper = new ObjectMapper
    objectMapper.registerModule(new DefaultScalaModule)
    objectMapper.registerModule(new GuavaModule)
    val objectReader = objectMapper.reader.without(DeserializationFeature.FAIL_ON_UNKNOWN_PROPERTIES)
    val source: String = "{\"headers\":{\"key1\": [\"value1\"] }}"

    val pojoWithMultiMap : PojoWithMultiMap = objectReader.readValue(objectReader.treeAsTokens(objectReader.readTree(source)),
      objectMapper.getTypeFactory.constructType(classOf[PojoWithMultiMap]))
    assertNotNull(pojoWithMultiMap)
  }
  @Test
  def worksFineWhenNotPropertyBased() = {
    val objectMapper = new ObjectMapper
    objectMapper.registerModule(new DefaultScalaModule)
    objectMapper.registerModule(new GuavaModule)
    val objectReader = objectMapper.reader.without(DeserializationFeature.FAIL_ON_UNKNOWN_PROPERTIES)
    val source: String = "{\"key1\": [\"value1\"] }"

    val multiMap : com.google.common.collect.Multimap[String,String] = objectReader.readValue(objectReader.treeAsTokens(objectReader.readTree(source)),
      objectMapper.getTypeFactory.constructMapLikeType(classOf[com.google.common.collect.Multimap[String,String]],classOf[String],classOf[String]))
    assertNotNull(multiMap)
  }
}

PojoWithMultiMap.java

import com.fasterxml.jackson.annotation.JsonCreator;
import com.fasterxml.jackson.annotation.JsonProperty;
import com.google.common.collect.Multimap;

/**
 * @author: ittaiz
 * @since: 8/7/13
 */
public class PojoWithMultiMap {

    private final Multimap<String, String> headers;

    @JsonCreator
    public PojoWithMultiMap(@JsonProperty("headers") Multimap<String, String> headers) {
        this.headers = headers;
    }

    public Multimap<String, String> getHeaders() {
        return headers;
    }
}

pom.xml

<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0"
         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
    <modelVersion>4.0.0</modelVersion>

    <groupId>jacksonGuavaMultiMap</groupId>
    <artifactId>jacksonGuavaMultiMap</artifactId>
    <version>1.0-SNAPSHOT</version>

    <dependencies>
        <dependency>
            <groupId>org.scala-lang</groupId>
            <artifactId>scala-library</artifactId>
            <version>2.10.2</version>
        </dependency>

        <dependency>
            <groupId>com.fasterxml.jackson.datatype</groupId>
            <artifactId>jackson-datatype-joda</artifactId>
            <version>2.2.2</version>
            <exclusions>
                <exclusion>
                    <groupId>com.fasterxml.jackson.core</groupId>
                    <artifactId>jackson-databind</artifactId>
                </exclusion>
                <exclusion>
                    <groupId>joda-time</groupId>
                    <artifactId>joda-time</artifactId>
                </exclusion>
            </exclusions>
        </dependency>
        <dependency>
            <groupId>com.fasterxml.jackson.core</groupId>
            <artifactId>jackson-databind</artifactId>
            <version>2.2.2</version>
        </dependency>
        <dependency>
            <groupId>com.fasterxml.jackson.datatype</groupId>
            <artifactId>jackson-datatype-guava</artifactId>
            <version>2.2.2</version>
            <exclusions>
                <exclusion>
                    <groupId>com.google.guava</groupId>
                    <artifactId>guava</artifactId>
                </exclusion>
            </exclusions>
        </dependency>
        <dependency>
            <groupId>com.fasterxml.jackson.module</groupId>
            <artifactId>jackson-module-scala_2.10</artifactId>
            <version>2.2.2</version>
        </dependency>

        <dependency>
            <groupId>com.google.guava</groupId>
            <artifactId>guava</artifactId>
            <version>14.0.1</version>
        </dependency>
        <dependency>
            <groupId>junit</groupId>
            <artifactId>junit</artifactId>
            <version>4.11</version>
            <exclusions>
                <exclusion>
                    <groupId>org.hamcrest</groupId>
                    <artifactId>hamcrest-core</artifactId>
                </exclusion>
            </exclusions>
        </dependency>
        <dependency>
            <groupId>org.hamcrest</groupId>
            <artifactId>hamcrest-all</artifactId>
            <version>1.3</version>
        </dependency>
    </dependencies>
    <build>
        <plugins>
            <plugin>
                <groupId>net.alchim31.maven</groupId>
                <artifactId>scala-maven-plugin</artifactId>
                <version>3.1.4</version>
                <configuration>
                    <recompileMode>incremental</recompileMode>
                    <useZincServer>false</useZincServer>
                    <source>1.7</source>
                    <target>1.7</target>
                </configuration>
                <executions>
                    <execution>
                        <id>scala-compile-first</id>
                        <phase>process-resources</phase>
                        <goals>
                            <goal>add-source</goal>
                            <goal>compile</goal>
                        </goals>
                    </execution>
                    <execution>
                        <id>scala-test-compile</id>
                        <phase>process-test-resources</phase>
                        <goals>
                            <goal>testCompile</goal>
                        </goals>
                    </execution>
                </executions>
            </plugin>
            <plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-surefire-plugin</artifactId>
                <version>2.11</version>
                <configuration>
                    <forkMode>once</forkMode>
                    <useSystemClassLoader>true</useSystemClassLoader>
                </configuration>
            </plugin>
        </plugins>
    </build>


</project>