Refactor unit tests to have one logical assertion per method.

- Support executing a single unit tests using __only prefix
- Hook in Email classes to main code, even if they're unused


git-svn-id: http://htmlpurifier.org/svnroot/htmlpurifier/trunk@1373 48356398-32a2-884e-a903-53898d9a118a

tests/HTMLPurifier/Strategy/CoreTest.php

@@ -11,26 +11,36 @@ class HTMLPurifier_Strategy_CoreTest extends HTMLPurifier_StrategyHarness
         $this->obj = new HTMLPurifier_Strategy_Core();
     }
     
-    function test() {
-        
+    function testBlankInput() {
         $this->assertResult('');
+    }
+    
+    function testMakeWellFormed() {
         $this->assertResult(
             '<b>Make well formed.',
             '<b>Make well formed.</b>'
         );
+    }
+    
+    function testFixNesting() {
         $this->assertResult(
             '<b><div>Fix nesting.</div></b>',
             '<b></b><div>Fix nesting.</div>'
         );
+    }
+    
+    function testRemoveForeignElements() {
         $this->assertResult(
             '<asdf>Foreign element removal.</asdf>',
             'Foreign element removal.'
         );
+    }
+    
+    function testFirstThree() {
         $this->assertResult(
             '<foo><b><div>All three.</div></b>',
             '<b></b><div>All three.</div>'
         );
-        
     }
     
 }