Index: tests/t3lib/t3lib_extmgm_testcase.php
===================================================================
--- tests/t3lib/t3lib_extmgm_testcase.php	(revision 5727)
+++ tests/t3lib/t3lib_extmgm_testcase.php	(working copy)
@@ -22,18 +22,18 @@
 *  This copyright notice MUST APPEAR in all copies of the script!
 ***************************************************************/
 
-
 /**
  * Testcase for class t3lib_extMgm
  *
- * @author	Oliver Hader <oliver@typo3.org>
+ * @author Oliver Hader <oliver@typo3.org>
+ * @author Oliver Klee <typo3-coding@oliverklee.de>
+ *
  * @package TYPO3
  * @subpackage t3lib
  */
 class t3lib_extmgm_testcase extends tx_phpunit_testcase {
 	/**
-	 * Contains backup of defined GLOBALS
-	 * @var array
+	 * @var array backup of defined GLOBALS
 	 */
 	protected $globals = array();
 
@@ -43,33 +43,64 @@
 		);
 	}
 
+	public function tearDown() {
+		foreach ($this->globals as $key => $value) {
+			$GLOBALS[$key] = unserialize($value);
+		}
+	}
+
+
+	/////////////////////////////////////////////
+	// Tests concerning getExtensionKeyByPrefix
+	/////////////////////////////////////////////
+
 	/**
 	 * @test
 	 * @see t3lib_extMgm::getExtensionKeyByPrefix
+	 *
+	 * @author	Oliver Hader <oliver@typo3.org>
+	 * @author	Oliver Klee <typo3-coding@oliverklee.de>
 	 */
-	public function checkGetExtensionKeyByPrefix() {
+	public function getExtensionKeyByPrefixForLoadedExtensionWithUnderscoresReturnsTrue() {
 		$uniqueSuffix = uniqid('test');
 		$GLOBALS['TYPO3_LOADED_EXT']['tt_news' . $uniqueSuffix] = array();
-		$GLOBALS['TYPO3_LOADED_EXT']['kickstarter' . $uniqueSuffix] = array();
 
 		$this->assertEquals(
 			'tt_news' . $uniqueSuffix,
 			t3lib_extMgm::getExtensionKeyByPrefix('tx_ttnews' . $uniqueSuffix)
 		);
+	}
+
+	/**
+	 * @test
+	 * @see t3lib_extMgm::getExtensionKeyByPrefix
+	 *
+	 * @author	Oliver Hader <oliver@typo3.org>
+	 * @author	Oliver Klee <typo3-coding@oliverklee.de>
+	 */
+	public function getExtensionKeyByPrefixForLoadedExtensionWithoutUnderscoresReturnsTrue() {
+		$uniqueSuffix = uniqid('test');
+		$GLOBALS['TYPO3_LOADED_EXT']['kickstarter' . $uniqueSuffix] = array();
+
 		$this->assertEquals(
 			'kickstarter' . $uniqueSuffix,
 			t3lib_extMgm::getExtensionKeyByPrefix('tx_kickstarter' . $uniqueSuffix)
 		);
+	}
+
+	/**
+	 * @test
+	 * @see t3lib_extMgm::getExtensionKeyByPrefix
+	 *
+	 * @author	Oliver Hader <oliver@typo3.org>
+	 * @author	Oliver Klee <typo3-coding@oliverklee.de>
+	 */
+	public function getExtensionKeyByPrefixForNotLoadedExtensionReturnsFalse() {
+		$uniqueSuffix = uniqid('test');
+
 		$this->assertFalse(
 			t3lib_extMgm::getExtensionKeyByPrefix('tx_unloadedextension' . $uniqueSuffix)
 		);
 	}
-
-	public function tearDown() {
-		foreach ($this->globals as $key => $value) {
-			$GLOBALS[$key] = unserialize($value);
-		}
-	}
 }
-
 ?>
\ No newline at end of file