Merge pull request #76 from adrianosferreira/not-exact-alias-version

Don't try to parse aliases versions which doesn't contain exact version

src/VersionParser.php

@@ -108,6 +108,9 @@ public function normalize($version, $fullVersion = null)
 
         // strip off aliasing
         if (preg_match('{^([^,\s]++) ++as ++([^,\s]++)$}', $version, $match)) {
+            // verify that the alias is a version without constraint
+            $this->normalize($match[2]);
+
             $version = $match[1];
         }
 

tests/VersionParserTest.php

@@ -123,6 +123,10 @@ public function failingNormalizedVersions()
             'non-dev arbitrary' => array('feature-foo'),
             'metadata w/ space' => array('1.0.0+foo bar'),
             'maven style release' => array('1.0.1-SNAPSHOT'),
+            'Alias and caret' => array('1.0.0+foo as ^2.0'),
+            'Alias and tilde' => array('1.0.0+foo as ~2.0'),
+            'Alias and greater than' => array('1.0.0+foo as >2.0'),
+            'Alias and less than' => array('1.0.0+foo as <2.0'),
         );
     }