Add test to check version information.

core/core.gradle

@@ -26,6 +26,9 @@ dependencies {
 int maxAESKeySize = javax.crypto.Cipher.getMaxAllowedKeyLength('AES')
 
 test {
+    systemProperties['springSecurityVersion'] = version
+    systemProperties['springVersion'] = springVersion
+
     if (maxAESKeySize < 256) {
         logger.warn("AES keysize limited to $maxAESKeySize, skipping EncryptorsTests")
         exclude '**/EncryptorsTests.class'

core/src/main/java/org/springframework/security/core/SpringSecurityCoreVersion.java

@@ -20,6 +20,10 @@ public class SpringSecurityCoreVersion {
      */
     public static final long SERIAL_VERSION_UID = 310L;
 
+    static final String SPRING_MAJOR_VERSION = "3";
+
+    static final String MIN_SPRING_VERSION = "3.0.5.RELEASE";
+
     static {
         // Check Spring Compatibility
         String springVersion = SpringVersion.getVersion();
@@ -27,14 +31,15 @@ public class SpringSecurityCoreVersion {
 
         if (springVersion != null) {
             logger.info("You are running with Spring Security Core " + version);
-            if (!springVersion.startsWith("3")) {
-                logger.error("Spring Major version '3' expected, but you are running with version: "
-                        + springVersion + ". Please check your classpath for unwanted jar files.");
+            if (!springVersion.startsWith(SPRING_MAJOR_VERSION)) {
+                logger.error("*** Spring Major version '" + SPRING_MAJOR_VERSION +
+                        "' expected, but you are running with version: " + springVersion +
+                        ". Please check your classpath for unwanted jar files.");
             }
 
-            if (springVersion.compareTo("3.0.5") < 0) {
-                logger.warn("You are advised to use Spring 3.0.5 or later with this version. You are running: " +
-                    springVersion);
+            if (springVersion.compareTo(MIN_SPRING_VERSION) < 0) {
+                logger.warn("**** You are advised to use Spring " + MIN_SPRING_VERSION +
+                        " or later with this version. You are running: " + springVersion);
             }
         }
     }