diff --git a/src/Composer/Package/BasePackage.php b/src/Composer/Package/BasePackage.php
index 965e5ddc8..9b2a683ca 100644
--- a/src/Composer/Package/BasePackage.php
+++ b/src/Composer/Package/BasePackage.php
@@ -206,6 +206,23 @@ abstract class BasePackage implements PackageInterface
         return $this->getPrettyName().' '.$this->getPrettyVersion();
     }
 
+    /**
+     * {@inheritDoc}
+     */
+    public function getFullPrettyVersion($truncate = true)
+    {
+        if (!$this->isDev() || !in_array($this->getSourceType(), array('hg', 'git'))) {
+            return $this->getPrettyVersion();
+        }
+
+        // if source reference is a sha1 hash -- truncate
+        if ($truncate && strlen($this->getSourceReference()) === 40) {
+            return $this->getPrettyVersion() . ' ' . substr($this->getSourceReference(), 0, 7);
+        }
+
+        return $this->getPrettyVersion() . ' ' . $this->getSourceReference();
+    }
+
     public function __clone()
     {
         $this->repository = null;
diff --git a/src/Composer/Package/PackageInterface.php b/src/Composer/Package/PackageInterface.php
index a51274d5b..ba34619f1 100644
--- a/src/Composer/Package/PackageInterface.php
+++ b/src/Composer/Package/PackageInterface.php
@@ -192,6 +192,16 @@ interface PackageInterface
      */
     public function getPrettyVersion();
 
+    /**
+     * Returns the pretty version string plus a git or hg commit hash of this package
+     *
+     * @see getPrettyVersion
+     *
+     * @param bool $truncate If the source reference is a sha1 hash, truncate it
+     * @return string version
+     */
+    public function getFullPrettyVersion($truncate = true);
+
     /**
      * Returns the release date of the package
      *
diff --git a/src/Composer/Package/Version/VersionParser.php b/src/Composer/Package/Version/VersionParser.php
index e199838f2..ee49e81c8 100644
--- a/src/Composer/Package/Version/VersionParser.php
+++ b/src/Composer/Package/Version/VersionParser.php
@@ -71,16 +71,7 @@ class VersionParser
 
     public static function formatVersion(PackageInterface $package, $truncate = true)
     {
-        if (!$package->isDev() || !in_array($package->getSourceType(), array('hg', 'git'))) {
-            return $package->getPrettyVersion();
-        }
-
-        // if source reference is a sha1 hash -- truncate
-        if ($truncate && strlen($package->getSourceReference()) === 40) {
-            return $package->getPrettyVersion() . ' ' . substr($package->getSourceReference(), 0, 7);
-        }
-
-        return $package->getPrettyVersion() . ' ' . $package->getSourceReference();
+        return $package->getFullPrettyVersion($truncate);
     }
 
     /**
diff --git a/tests/Composer/Test/Package/Version/VersionParserTest.php b/tests/Composer/Test/Package/Version/VersionParserTest.php
index d8f351a27..18551570d 100644
--- a/tests/Composer/Test/Package/Version/VersionParserTest.php
+++ b/tests/Composer/Test/Package/Version/VersionParserTest.php
@@ -56,7 +56,7 @@ class VersionParserTest extends \PHPUnit_Framework_TestCase
 
         $self = $this;
         $createPackage = function ($arr) use ($self) {
-            $package = $self->getMock('\Composer\Package\PackageInterface');
+            $package = $self->getMockForAbstractClass('\Composer\Package\BasePackage', array(), '', false);
             $package->expects($self->once())->method('isDev')->will($self->returnValue(true));
             $package->expects($self->once())->method('getSourceType')->will($self->returnValue('git'));
             $package->expects($self->once())->method('getPrettyVersion')->will($self->returnValue('PrettyVersion'));