diff --git a/web/src/test/groovy/org/springframework/security/web/context/AbstractSecurityWebApplicationInitializerTests.groovy b/web/src/test/groovy/org/springframework/security/web/context/AbstractSecurityWebApplicationInitializerTests.groovy
new file mode 100644
index 0000000000..05b91d32d5
--- /dev/null
+++ b/web/src/test/groovy/org/springframework/security/web/context/AbstractSecurityWebApplicationInitializerTests.groovy
@@ -0,0 +1,263 @@
+/*
+ * Copyright 2002-2013 the original author or authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.springframework.security.web.context;
+
+import java.util.EnumSet;
+
+import javax.servlet.DispatcherType;
+import javax.servlet.Filter;
+import javax.servlet.FilterRegistration;
+import javax.servlet.ServletContext;
+
+import org.springframework.security.web.session.HttpSessionEventPublisher;
+import org.springframework.web.filter.DelegatingFilterProxy;
+
+import spock.lang.Specification
+
+/**
+ * @author Rob Winch
+ *
+ */
+class AbstractSecurityWebApplicationInitializerTests extends Specification {
+
+    def defaults() {
+        setup:
+            ServletContext context = Mock()
+            FilterRegistration.Dynamic registration = Mock()
+        when:
+            new AbstractSecurityWebApplicationInitializer(){}.onStartup(context)
+        then:
+            1 * context.addFilter("springSecurityFilterChain", {DelegatingFilterProxy f -> f.targetBeanName == "springSecurityFilterChain" && f.contextAttribute == null}) >> registration
+            1 * registration.addMappingForUrlPatterns(EnumSet.of(DispatcherType.REQUEST, DispatcherType.ERROR), false, "/*");
+            1 * registration.setAsyncSupported(true)
+            0 * context.addListener(_)
+    }
+
+    def "enableHttpSessionEventPublisher() = true"() {
+        setup:
+            ServletContext context = Mock()
+            FilterRegistration.Dynamic registration = Mock()
+        when:
+            new AbstractSecurityWebApplicationInitializer(){
+                protected boolean enableHttpSessionEventPublisher() {
+                    return true;
+                }
+            }.onStartup(context)
+        then:
+            1 * context.addFilter("springSecurityFilterChain", {DelegatingFilterProxy f -> f.targetBeanName == "springSecurityFilterChain" && f.contextAttribute == null}) >> registration
+            1 * registration.addMappingForUrlPatterns(EnumSet.of(DispatcherType.REQUEST, DispatcherType.ERROR), false, "/*");
+            1 * registration.setAsyncSupported(true)
+            1 * context.addListener(HttpSessionEventPublisher)
+    }
+
+    def "custom getSecurityDispatcherTypes()"() {
+        setup:
+            ServletContext context = Mock()
+            FilterRegistration.Dynamic registration = Mock()
+        when:
+            new AbstractSecurityWebApplicationInitializer(){
+                protected EnumSet<DispatcherType> getSecurityDispatcherTypes() {
+                    return EnumSet.of(DispatcherType.REQUEST, DispatcherType.ERROR, DispatcherType.FORWARD);
+                }
+            }.onStartup(context)
+        then:
+            1 * context.addFilter("springSecurityFilterChain", {DelegatingFilterProxy f -> f.targetBeanName == "springSecurityFilterChain" && f.contextAttribute == null}) >> registration
+            1 * registration.addMappingForUrlPatterns(EnumSet.of(DispatcherType.REQUEST, DispatcherType.ERROR, DispatcherType.FORWARD), false, "/*");
+            1 * registration.setAsyncSupported(true)
+            0 * context.addListener(_)
+    }
+
+    def "custom getDispatcherWebApplicationContextSuffix"() {
+        setup:
+            ServletContext context = Mock()
+            FilterRegistration.Dynamic registration = Mock()
+        when:
+            new AbstractSecurityWebApplicationInitializer(){
+                protected String getDispatcherWebApplicationContextSuffix() {
+                    return "dispatcher"
+                }
+            }.onStartup(context)
+        then:
+            1 * context.addFilter("springSecurityFilterChain", {DelegatingFilterProxy f -> f.targetBeanName == "springSecurityFilterChain" && f.contextAttribute == "org.springframework.web.servlet.FrameworkServlet.CONTEXT.dispatcher"}) >> registration
+            1 * registration.addMappingForUrlPatterns(EnumSet.of(DispatcherType.REQUEST, DispatcherType.ERROR), false, "/*");
+            1 * registration.setAsyncSupported(true)
+            0 * context.addListener(_)
+    }
+
+    def "springSecurityFilterChain already registered"() {
+        setup:
+            ServletContext context = Mock()
+            FilterRegistration.Dynamic registration = Mock()
+        when:
+            new AbstractSecurityWebApplicationInitializer(){}.onStartup(context)
+        then:
+            1 * context.addFilter("springSecurityFilterChain", {DelegatingFilterProxy f -> f.targetBeanName == "springSecurityFilterChain" && f.contextAttribute == null}) >> null
+            IllegalStateException success = thrown()
+            success.message == "Duplicate Filter registration for 'springSecurityFilterChain'. Check to ensure the Filter is only configured once."
+    }
+
+    def "insertFilters"() {
+        setup:
+            Filter filter1 = Mock()
+            Filter filter2 = Mock()
+            ServletContext context = Mock()
+            FilterRegistration.Dynamic registration = Mock()
+        when:
+            new AbstractSecurityWebApplicationInitializer(){
+                protected void afterSpringSecurityFilterChain(ServletContext servletContext) {
+                    insertFilters(context, filter1, filter2);
+                }
+            }.onStartup(context)
+        then:
+            1 * context.addFilter("springSecurityFilterChain", {DelegatingFilterProxy f -> f.targetBeanName == "springSecurityFilterChain" && f.contextAttribute == null}) >> registration
+            3 * registration.addMappingForUrlPatterns(EnumSet.of(DispatcherType.REQUEST, DispatcherType.ERROR), false, "/*");
+            3 * registration.setAsyncSupported(true)
+            0 * context.addListener(_)
+            1 * context.addFilter(_, filter1) >> registration
+            1 * context.addFilter(_, filter2) >> registration
+    }
+
+    def "insertFilters already registered"() {
+        setup:
+            Filter filter1 = Mock()
+            ServletContext context = Mock()
+            FilterRegistration.Dynamic registration = Mock()
+        when:
+            new AbstractSecurityWebApplicationInitializer(){
+                protected void afterSpringSecurityFilterChain(ServletContext servletContext) {
+                    insertFilters(context, filter1);
+                }
+            }.onStartup(context)
+        then:
+            1 * context.addFilter("springSecurityFilterChain", {DelegatingFilterProxy f -> f.targetBeanName == "springSecurityFilterChain" && f.contextAttribute == null}) >> registration
+            1 * registration.addMappingForUrlPatterns(EnumSet.of(DispatcherType.REQUEST, DispatcherType.ERROR), false, "/*");
+            1 * context.addFilter(_, filter1) >> null
+            IllegalStateException success = thrown()
+            success.message == "Duplicate Filter registration for 'filter'. Check to ensure the Filter is only configured once."
+    }
+
+    def "insertFilters no filters"() {
+        setup:
+            ServletContext context = Mock()
+            FilterRegistration.Dynamic registration = Mock()
+        when:
+            new AbstractSecurityWebApplicationInitializer(){
+                protected void afterSpringSecurityFilterChain(ServletContext servletContext) {
+                    insertFilters(context);
+                }
+            }.onStartup(context)
+        then:
+            1 * context.addFilter("springSecurityFilterChain", {DelegatingFilterProxy f -> f.targetBeanName == "springSecurityFilterChain" && f.contextAttribute == null}) >> registration
+            IllegalArgumentException success = thrown()
+            success.message == "filters cannot be null or empty"
+    }
+
+    def "insertFilters filters with null"() {
+        setup:
+            Filter filter1 = Mock()
+            ServletContext context = Mock()
+            FilterRegistration.Dynamic registration = Mock()
+        when:
+            new AbstractSecurityWebApplicationInitializer(){
+                protected void afterSpringSecurityFilterChain(ServletContext servletContext) {
+                    insertFilters(context,  filter1, null);
+                }
+            }.onStartup(context)
+        then:
+            2 * context.addFilter(_, _) >> registration
+            IllegalArgumentException success = thrown()
+            success.message == "filters cannot contain null values. Got [Mock for type 'Filter' named 'filter1', null]"
+    }
+
+    def "appendFilters"() {
+        setup:
+            Filter filter1 = Mock()
+            Filter filter2 = Mock()
+            ServletContext context = Mock()
+            FilterRegistration.Dynamic registration = Mock()
+        when:
+            new AbstractSecurityWebApplicationInitializer(){
+                protected void afterSpringSecurityFilterChain(ServletContext servletContext) {
+                    appendFilters(context,filter1, filter2);
+                }
+            }.onStartup(context)
+        then:
+            1 * context.addFilter("springSecurityFilterChain", {DelegatingFilterProxy f -> f.targetBeanName == "springSecurityFilterChain" && f.contextAttribute == null}) >> registration
+            1 * registration.addMappingForUrlPatterns(EnumSet.of(DispatcherType.REQUEST, DispatcherType.ERROR), false, "/*");
+            2 * registration.addMappingForUrlPatterns(EnumSet.of(DispatcherType.REQUEST, DispatcherType.ERROR), true, "/*");
+            3 * registration.setAsyncSupported(true)
+            0 * context.addListener(_)
+            1 * context.addFilter(_, filter1) >> registration
+            1 * context.addFilter(_, filter2) >> registration
+    }
+
+    def "appendFilters already registered"() {
+        setup:
+            Filter filter1 = Mock()
+            ServletContext context = Mock()
+            FilterRegistration.Dynamic registration = Mock()
+        when:
+            new AbstractSecurityWebApplicationInitializer(){
+                protected void afterSpringSecurityFilterChain(ServletContext servletContext) {
+                    appendFilters(context, filter1);
+                }
+            }.onStartup(context)
+        then:
+            1 * context.addFilter("springSecurityFilterChain", {DelegatingFilterProxy f -> f.targetBeanName == "springSecurityFilterChain" && f.contextAttribute == null}) >> registration
+            1 * registration.addMappingForUrlPatterns(EnumSet.of(DispatcherType.REQUEST, DispatcherType.ERROR), false, "/*");
+            1 * context.addFilter(_, filter1) >> null
+            IllegalStateException success = thrown()
+            success.message == "Duplicate Filter registration for 'filter'. Check to ensure the Filter is only configured once."
+    }
+
+    def "appendFilters no filters"() {
+        setup:
+            ServletContext context = Mock()
+            FilterRegistration.Dynamic registration = Mock()
+        when:
+            new AbstractSecurityWebApplicationInitializer(){
+                protected void afterSpringSecurityFilterChain(ServletContext servletContext) {
+                    appendFilters(context);
+                }
+            }.onStartup(context)
+        then:
+            1 * context.addFilter("springSecurityFilterChain", {DelegatingFilterProxy f -> f.targetBeanName == "springSecurityFilterChain" && f.contextAttribute == null}) >> registration
+            IllegalArgumentException success = thrown()
+            success.message == "filters cannot be null or empty"
+    }
+
+    def "appendFilters filters with null"() {
+        setup:
+            Filter filter1 = Mock()
+            ServletContext context = Mock()
+            FilterRegistration.Dynamic registration = Mock()
+        when:
+            new AbstractSecurityWebApplicationInitializer(){
+                protected void afterSpringSecurityFilterChain(ServletContext servletContext) {
+                    appendFilters(context,  filter1, null);
+                }
+            }.onStartup(context)
+        then:
+            2 * context.addFilter(_, _) >> registration
+            IllegalArgumentException success = thrown()
+            success.message == "filters cannot contain null values. Got [Mock for type 'Filter' named 'filter1', null]"
+    }
+
+    def "DEFAULT_FILTER_NAME == springSecurityFilterChain"() {
+        expect:
+            AbstractSecurityWebApplicationInitializer.DEFAULT_FILTER_NAME == "springSecurityFilterChain"
+    }
+}
diff --git a/web/src/test/java/org/springframework/security/web/context/AbstractSecurityWebApplicationInitializerTest.java b/web/src/test/java/org/springframework/security/web/context/AbstractSecurityWebApplicationInitializerTest.java
deleted file mode 100644
index 006de03917..0000000000
--- a/web/src/test/java/org/springframework/security/web/context/AbstractSecurityWebApplicationInitializerTest.java
+++ /dev/null
@@ -1,18 +0,0 @@
-package org.springframework.security.web.context;
-
-
-import org.junit.Test;
-
-import static org.junit.Assert.assertEquals;
-
-/**
- * @author Keesun Baik
- */
-public class AbstractSecurityWebApplicationInitializerTest {
-
-    @Test
-    public void defaultFilterName() {
-        assertEquals(AbstractSecurityWebApplicationInitializer.DEFAULT_FILTER_NAME, "springSecurityFilterChain");
-    }
-
-}
diff --git a/web/web.gradle b/web/web.gradle
index 19e9ec6f35..69014574a6 100644
--- a/web/web.gradle
+++ b/web/web.gradle
@@ -1,4 +1,8 @@
+apply plugin: 'groovy'
+
 dependencies {
+    groovy 'org.codehaus.groovy:groovy:1.8.7'
+
     compile project(':spring-security-core'),
             'aopalliance:aopalliance:1.0',
             "org.springframework:spring-aop:$springVersion",
@@ -14,6 +18,7 @@ dependencies {
     testCompile project(':spring-security-core').sourceSets.test.output,
                 'commons-codec:commons-codec:1.3',
                 "org.slf4j:jcl-over-slf4j:$slf4jVersion",
+                'org.spockframework:spock-core:0.6-groovy-1.8',
                 "org.springframework:spring-test:$springVersion",
                 powerMockDependencies