Cannot autowire Spring Data Repository

I'm creating a simple application with Spring, Hibernate and MySQL database. I've done some research, but no answer was accurate. I have a repository interface, which is an extension of BaseCrudRepository, which extends ReadOnlyRepository, which is an extension of org.springframework.data.repository.Repository. Code is as below:

package dziecko.repositories;

import dziecko.models.AreaDate;
import dziecko.utils.BaseCrudRepository;

public interface AreaDateRepository extends BaseCrudRepository<AreaDate, Integer> {}

AreaDate is a simple entity:

@Entity
@Table(name = "AREADATES")
public class AreaDate extends AbstractBase implements DtoGenerator<AreaDateDto> {

    private static final long serialVersionUID = -2956040373671316338L;

    @Column(name = "START_TIME")
    private Date startTime;

    @Column(name = "END_TIME")
    private Date endTime;

    @Column(name = "ALARM", nullable = true)
    private Boolean alarm;

    public AreaDate() {    
    }

    public Date getStartTime() {
        return startTime;
    }

    public Date getEndTime() {
        return endTime;
    }

    public Boolean getAlarm() {
        return alarm;
    }

    @Override
    public AreaDateDto createDto() {
        return new AreaDateDto(id, startTime, endTime, alarm);
    }
}

Here is my web.xml file:

<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns:xsi="http://ift.tt/ra1lAU"
    xmlns="http://ift.tt/nSRXKP"
    xsi:schemaLocation="http://ift.tt/nSRXKP
    http://ift.tt/1eWqHMP" version="3.0">

    <context-param>
        <param-name>contextConfigLocation</param-name>
        <param-value>/WEB-INF/app-context.xml</param-value>
    </context-param>

    <listener>
        <listener-class>
            org.springframework.web.context.ContextLoaderListener
        </listener-class>
    </listener>
</web-app>

app-context.xml:

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://ift.tt/GArMu6"
    xmlns:xsi="http://ift.tt/ra1lAU" xmlns:mvc="http://ift.tt/1bHqwjR"
    xmlns:beans="http://ift.tt/GArMu6" xmlns:jpa="http://ift.tt/1iMF6wA"
    xmlns:context="http://ift.tt/GArMu7" xmlns:tx="http://ift.tt/OGfeU2"
    xsi:schemaLocation="http://ift.tt/1bHqwjR http://ift.tt/1fmimld
    http://ift.tt/GArMu6 http://ift.tt/1jdM0fG
    http://ift.tt/OGfeU2 http://ift.tt/18tm2Tg
    http://ift.tt/GArMu7 http://ift.tt/1jdLYo7
    http://ift.tt/1iMF6wA http://ift.tt/1jZdjKs">

    <!-- Enable @Controller annotation support -->
    <mvc:annotation-driven />

    <jpa:repositories base-package="dziecko.repositories" />

    <context:annotation-config />
    <!-- Scan classpath for annotations (eg: @Service, @Repository etc) -->
    <context:component-scan base-package="dziecko.rests, dziecko.services">
        <context:exclude-filter expression="org.springframework.web.bind.annotation.RestController" type="annotation" />
    </context:component-scan>

    <!-- JDBC Data Source. -->
    <bean id="dataSource" class="org.apache.commons.dbcp.BasicDataSource" destroy-method="close">
        <property name="driverClassName" value="com.mysql.jdbc.Driver" />
        <property name="url" value="jdbc:mysql://127.0.0.1:3306/dziecko" />
        <property name="username" value="root" />
        <property name="password" value="" />
        <property name="validationQuery" value="SELECT 1" />
    </bean>

    <!-- Hibernate Session Factory -->
    <bean id="entityManagerFactory" class="org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean">
        <property name="dataSource" ref="dataSource" />
        <property name="jpaVendorAdapter">
         <bean class="org.springframework.orm.jpa.vendor.HibernateJpaVendorAdapter" />
        </property>
        <property name="packagesToScan">
            <array>
                <value>dziecko.models</value>
            </array>
        </property>
        <property name="jpaProperties">
            <props>
                <prop key="hibernate.hbm2ddl.auto">create</prop>
                <prop key="hibernate.ejb.naming_strategy">org.hibernate.cfg.ImprovedNamingStrategy</prop>
                <prop key="hibernate.connection.charSet">UTF-8</prop>
                <prop key="hibernate.show_sql">true</prop>
                <prop key="hibernate.format_sql">true</prop>
                <prop key="jadira.usertype.autoRegisterUserTypes">true</prop>
                <prop key="jadira.usertype.databaseZone">jvm</prop>
                <prop key="hibernate.id.new_generator_mappings">true</prop>
            </props>
        </property>
    </bean>

    <!-- Hibernate Transaction Manager -->
    <bean id="transactionManager"
        class="org.springframework.orm.jpa.JpaTransactionManager">
        <property name="entityManagerFactory" ref="entityManagerFactory" />
    </bean>

    <!-- Activates annotation based transaction management -->
    <tx:annotation-driven transaction-manager="transactionManager" />
</beans>

The problem is that even this simple test fails, because repository which is supposed to be autowired is null:

package dziecko.tests;

import org.springframework.beans.factory.annotation.Autowired;
import org.testng.Assert;
import org.testng.annotations.Test;

import dziecko.repositories.AreaDateRepository;

public class SpringConfigurationTest {

    @Autowired
    private AreaDateRepository adRepo;

    @Test
    public void shouldWireComponents() {
        Assert.assertNotNull(adRepo);
    }
}

java.lang.AssertionError: expected object to not be null

All entities are created inside the database. I just can't figure out how to configure those Spring repositories properly. Everything seems to be done similar to http://ift.tt/1CEMDVq. Anyone has an idea how autowiring can be fixed here?