SEC-2515: Detect object cycle for AuthenticationManager configuration

config/src/test/groovy/org/springframework/security/config/annotation/web/configuration/Sec2515Tests.groovy

@@ -0,0 +1,72 @@
+/*
+ * 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.config.annotation.web.configuration;
+
+import org.springframework.beans.FatalBeanException;
+import org.springframework.context.annotation.Bean
+import org.springframework.context.annotation.Configuration
+import org.springframework.security.authentication.AuthenticationManager
+import org.springframework.security.authentication.UsernamePasswordAuthenticationToken
+import org.springframework.security.config.annotation.BaseSpringSpec
+import org.springframework.security.config.annotation.authentication.builders.AuthenticationManagerBuilder;
+
+public class Sec2515Tests extends BaseSpringSpec {
+
+    def "SEC-2515: Prevent StackOverflow with bean graph cycle"() {
+        when:
+           loadConfig(StackOverflowSecurityConfig)
+        then:
+            thrown(FatalBeanException)
+    }
+
+    @EnableWebSecurity
+    @Configuration
+    static class StackOverflowSecurityConfig extends WebSecurityConfigurerAdapter {
+
+        @Override
+        @Bean
+        public AuthenticationManager authenticationManagerBean()
+                throws Exception {
+            return super.authenticationManagerBean();
+        }
+    }
+
+
+    def "SEC-2515: @Bean still works when configure(AuthenticationManagerBuilder) used"() {
+        when:
+           loadConfig(SecurityConfig)
+        then:
+            noExceptionThrown();
+    }
+
+    @EnableWebSecurity
+    @Configuration
+    static class SecurityConfig extends WebSecurityConfigurerAdapter {
+
+        @Override
+        @Bean
+        public AuthenticationManager authenticationManagerBean()
+                throws Exception {
+            return super.authenticationManagerBean();
+        }
+
+        @Override
+        protected void configure(AuthenticationManagerBuilder auth)
+                throws Exception {
+            auth.inMemoryAuthentication()
+        }
+    }
+}