Spock JUnit testing: NullPointer cannot invoke method persist() on null object - spring

Question

Im trying to do some unit testing on my SpringBootApplication. When i attempt to test the class "UserRepository" the it keeps telling me that its null. Im not sure whats going on.
Running com.bestech.spec.SpockTestSpec
Tests run: 1, Failures: 0, Errors: 1, Skipped: 0, Time elapsed: 0.047 sec <<< FAILURE! - in com.bestech.spec.SpockTestSpec
find by email(com.bestech.spec.SpockTestSpec) Time elapsed: 0.047 sec <<< ERROR!
java.lang.NullPointerException: Cannot invoke method persist() on null object
at com.bestech.spec.SpockTestSpec.find by email(SpockTestSpec.groovy:28)
Results :
Tests in error:
SpockTestSpec.find by email:28 NullPointer Cannot invoke method persist() on n...
Tests run: 1, Failures: 0, Errors: 1, Skipped: 0
Here is my test class
#DataJpaTest
class SpockTestSpec extends Specification {
#Autowired
TestEntityManager em
#Autowired
UserRepository userRepository
def "find by email"() {
given: "a user"
User user = new User("Admin","9999","admin#admin.com")
em.persist(user)
em.flush()
when:"that user is then found by email"
User found = userRepository.findByEmail(user.email)
then: "found equals user"
found == user
}
}
here is my 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>com.bestech</groupId>
<version>0.0.1-SNAPSHOT</version>
<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>1.5.6.RELEASE</version>
</parent>
<properties>
<java.version>1.8</java.version>
</properties>
<dependencies>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-data-jpa</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.plugin</groupId>
<artifactId>spring-plugin-core</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.hateoas</groupId>
<artifactId>spring-hateoas</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.security.oauth</groupId>
<artifactId>spring-security-oauth2</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.plugin</groupId>
<artifactId>spring-plugin-core</artifactId>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-orm</artifactId>
</dependency>
<dependency>
<groupId>com.h2database</groupId>
<artifactId>h2</artifactId>
</dependency>
<!-- Test only dependencies -->
<dependency>
<groupId>com.jayway.jsonpath</groupId>
<artifactId>json-path</artifactId>
<scope>test</scope>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-test</artifactId>
<scope>test</scope>
</dependency>
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<scope>runtime</scope>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-data-rest</artifactId>
</dependency>
<dependency>
<groupId>org.jsoup</groupId>
<artifactId>jsoup</artifactId>
<version>1.10.2</version>
</dependency>
<dependency>
<groupId>org.mindrot</groupId>
<artifactId>jbcrypt</artifactId>
<version>0.4</version>
</dependency>
<dependency>
<groupId>com.h2database</groupId>
<artifactId>h2</artifactId>
<scope>test</scope>
</dependency>
<!-- Servlet -->
<dependency>
<groupId>javax.servlet</groupId>
<artifactId>javax.servlet-api</artifactId>
</dependency>
<!-- Hibernate -->
<dependency>
<groupId>org.hibernate</groupId>
<artifactId>hibernate-core</artifactId>
</dependency>
<dependency>
<groupId>org.hibernate</groupId>
<artifactId>hibernate-entitymanager</artifactId>
</dependency>
<!-- Javassist -->
<dependency>
<groupId>org.javassist</groupId>
<artifactId>javassist</artifactId>
<version>3.20.0-GA</version>
</dependency>
<!-- Spock -->
<dependency> <!-- enables mocking of classes (in addition to interfaces) -->
<groupId>net.bytebuddy</groupId>
<artifactId>byte-buddy</artifactId>
<version>1.6.5</version>
<scope>test</scope>
</dependency>
<dependency>
<groupId>cglib</groupId>
<artifactId>cglib</artifactId>
<version>3.1</version>
</dependency>
<dependency> <!-- enables mocking of classes without default constructor (together with
CGLIB) -->
<groupId>org.objenesis</groupId>
<artifactId>objenesis</artifactId>
<version>2.5.1</version>
<scope>test</scope>
</dependency>
<dependency>
<groupId>org.spockframework</groupId>
<artifactId>spock-core</artifactId>
<version>1.1-groovy-2.4</version>
</dependency>
<dependency>
<groupId>org.spockframework</groupId>
<artifactId>spock-spring</artifactId>
</dependency>
</dependencies>
<build>
<plugins>
<plugin>
<groupId>org.codehaus.gmavenplus</groupId>
<artifactId>gmavenplus-plugin</artifactId>
<version>1.0</version>
<executions>
<execution>
<goals>
<goal>generateStubs</goal>
<goal>compile</goal>
<goal>testGenerateStubs</goal>
<goal>testCompile</goal>
</goals>
</execution>
</executions>
<dependencies>
<dependency>
<groupId>org.codehaus.groovy</groupId>
<artifactId>groovy-all</artifactId>
<version>2.4.4</version>
<scope>runtime</scope>
</dependency>
</dependencies>
</plugin>
<!-- Optional -->
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-surefire-plugin</artifactId>
<version>2.16</version>
<configuration>
<parallel>methods</parallel>
<threadCount>5</threadCount>
<includes>
<include>**/*Test.*</include>
<include>**/*Spec.*</include>
</includes>
<excludes>
<exclude>**/Abstract*.java</exclude>
</excludes>
</configuration>
</plugin>
</plugins>
</build>
<repositories>
<repository>
<id>spring-releases</id>
<url>https://repo.spring.io/libs-release</url>
</repository>
</repositories>
<pluginRepositories>
<pluginRepository>
<id>spring-releases</id>
<url>https://repo.spring.io/libs-release</url>
</pluginRepository>
</pluginRepositories>
<artifactId>praze</artifactId>
</project>
Im not sure exactly why its telling me userRepository is null, any help is appreciated. This is my first time using spock