enhance spock.xsd to support creation on a bean reference for partiy

with DetachedMockFactory

spock-spring/src/main/java/org/spockframework/spring/xml/SpockNamespaceHandler.java

@@ -16,5 +16,6 @@ public void init() {
     registerBeanDefinitionParser("mock", new MockBeanDefinitionParser());
     registerBeanDefinitionParser("spy", new MockBeanDefinitionParser());
     registerBeanDefinitionParser("stub", new MockBeanDefinitionParser());
+    registerBeanDefinitionParser("wrapWithSpy", new WrapWithSpyBeanDefinitionParser());
   }
 }

spock-spring/src/main/java/org/spockframework/spring/xml/SpockSpyBeanPostProcessor.java

@@ -0,0 +1,33 @@
+package org.spockframework.spring.xml;
+
+import java.util.Collections;
+
+import org.spockframework.mock.MockNature;
+import org.springframework.beans.BeansException;
+import org.springframework.beans.factory.config.BeanPostProcessor;
+
+import spock.mock.DetachedMockFactory;
+
+public class SpockSpyBeanPostProcessor implements BeanPostProcessor {
+
+    private final String beanName;
+
+    public SpockSpyBeanPostProcessor(String beanName) {
+        this.beanName = beanName;
+    }
+
+    @Override
+    public Object postProcessBeforeInitialization(Object bean, String beanName) throws BeansException {
+        return bean;
+    }
+
+    @Override
+    public Object postProcessAfterInitialization(Object bean, String beanName) throws BeansException {
+        if (this.beanName.equals(beanName)) {
+            return new DetachedMockFactory().createMock(beanName, bean, MockNature.SPY,
+                    Collections.<String, Object>emptyMap());
+        } else {
+            return bean;
+        }
+    }
+}

spock-spring/src/main/java/org/spockframework/spring/xml/WrapWithSpyBeanDefinitionParser.java

@@ -0,0 +1,23 @@
+package org.spockframework.spring.xml;
+
+import org.springframework.beans.factory.support.BeanDefinitionBuilder;
+import org.springframework.beans.factory.xml.AbstractSingleBeanDefinitionParser;
+import org.w3c.dom.Element;
+
+public class WrapWithSpyBeanDefinitionParser extends AbstractSingleBeanDefinitionParser {
+
+    @Override
+    protected Class<?> getBeanClass(Element element) {
+        return SpockSpyBeanPostProcessor.class;
+    }
+
+    @Override
+    protected void doParse(Element element, BeanDefinitionBuilder builder) {
+        builder.addConstructorArgValue(element.getAttribute("ref"));
+    }
+
+    @Override
+    protected boolean shouldGenerateIdAsFallback() {
+        return true;
+    }
+}

spock-spring/src/main/resources/org/spockframework/spock.xsd

@@ -22,7 +22,18 @@
         </xs:complexContent>
     </xs:complexType>
 
+	<xs:complexType name="wrapWithSpyDefinitionType">
+		<xs:attribute name="ref" type="xs:string" use="required">
+			<xs:annotation>
+				<xs:documentation>
+                       <![CDATA[ The bean id that you would like to wrap with a spy. ]]>
+				</xs:documentation>
+			</xs:annotation>
+		</xs:attribute>
+	</xs:complexType>
+
     <xs:element name="mock" type="spock:mockDefinitionType"/>
     <xs:element name="spy" type="spock:mockDefinitionType"/>
     <xs:element name="stub" type="spock:mockDefinitionType"/>
+    <xs:element name="wrapWithSpy" type="wrapWithSpyDefinitionType"/>
 </xs:schema>

spock-spring/src/test/groovy/org/spockframework/spring/MockInjectionExample.groovy

@@ -23,7 +23,10 @@ public class MockInjectionExample extends Specification {
 
   @Autowired @Named('service2')
   IService2 service2
-
+
+  @Autowired @Named('nonMock')
+  ArrayList concreteSpy;
+
   def "Injected services are mocks"() {
     expect:
     new MockUtil().isMock(serviceMock)
@@ -56,5 +59,13 @@ public class MockInjectionExample extends Specification {
     service2.generateQuickBrownFox() == null
 
   }
+
+  def "Spies can be created from concrete objects and injected"() {
+    when:
+    concreteSpy.size()
+
+    then:
+    1 * concreteSpy.size() >> 0
+  }
 
 }

spock-spring/src/test/resources/MockExamples-context.xml

@@ -9,12 +9,13 @@
   <spock:mock id="serviceMock" class="org.spockframework.spring.IService1"/>
   <spock:stub id="serviceStub" class="org.spockframework.spring.IService1"/>
   <spock:spy id="serviceSpy" class="org.spockframework.spring.Service2"/>
+
+  <spock:wrapWithSpy ref="nonMock"/>
 
   <bean id="service2" class="org.spockframework.spring.xml.SpockMockFactoryBean">
     <constructor-arg value="org.spockframework.spring.IService2"/>
   </bean>
 
   <bean id="nonMock" class="java.util.ArrayList"/>
-
   <bean id="abstractBean" class="java.util.ArrayList" abstract="true"/>
 </beans>