Migrate from fest-assert to assertj

Fixes gh-338

docs/build.gradle

@@ -31,7 +31,7 @@ dependencies {
 				'junit:junit:4.11',
 				'org.mockito:mockito-core:1.9.5',
 				"org.springframework:spring-test:$springVersion",
-				'org.easytesting:fest-assert:1.4',
+				"org.assertj:assertj-core:$assertjVersion",
 				"com.hazelcast:hazelcast:$hazelcastVersion",
 				"redis.clients:jedis:2.4.1",
 				"javax.servlet:javax.servlet-api:$servletApiVersion"

docs/src/test/java/docs/HttpSessionConfigurationNoOpConfigureRedisActionXmlTests.java

@@ -15,7 +15,7 @@
  */
 package docs;
 
-import static org.fest.assertions.Assertions.assertThat;
+import static org.assertj.core.api.Assertions.*;
 import static org.mockito.Mockito.mock;
 
 import org.junit.Test;

docs/src/test/java/docs/IndexDocTests.java

@@ -15,10 +15,9 @@
  */
 package docs;
 
-import static org.fest.assertions.Assertions.assertThat;
+import static org.assertj.core.api.Assertions.*;
 
 import org.junit.Test;
-import org.springframework.context.annotation.AnnotationConfigApplicationContext;
 import org.springframework.data.redis.connection.jedis.JedisConnectionFactory;
 import org.springframework.mock.web.MockServletContext;
 import org.springframework.session.ExpiringSession;

docs/src/test/java/docs/http/AbstractHttpSessionListenerTests.java

@@ -15,7 +15,7 @@
  */
 package docs.http;
 
-import static org.fest.assertions.Assertions.assertThat;
+import static org.assertj.core.api.Assertions.*;
 import static org.mockito.Mockito.mock;
 import static org.mockito.Mockito.when;