Mark tests that use sleep calls as slow, so we can ignore them when running unit tests in development

existant -> existent

tests/UnitTests/CacheResourceTests/_shared/CacheResourceTestCommon.php

@@ -339,6 +339,10 @@ class CacheResourceTestCommon extends PHPUnit_Smarty
         $this->assertNull($tpl->cached->handler->getCachedContent($tpl3));
         $this->assertEquals('hello world', $tpl->cached->handler->getCachedContent($tpl4));
     }
+
+    /**
+     * @group slow
+     */
    public function testClearCacheExpired()
     {
         $this->smarty->caching = true;
@@ -399,7 +403,7 @@ class CacheResourceTestCommon extends PHPUnit_Smarty
      * @runInSeparateProcess
      * @preserveGlobalState disabled
      * @dataProvider data
-     *
+     * @group slow
      */
     public function testCache($lockTime, $lockTimeout, $compile_id, $cache_id, $isCached, $tmin, $tmax, $forceCompile, $forceCache, $update, $testNumber, $compileTestNumber, $renderTestNumber, $testName)
     {

tests/UnitTests/ResourceTests/Extends/ExtendsResourceTest.php

@@ -125,7 +125,7 @@ class ExtendsResourceTest extends PHPUnit_Smarty
      * test  grandchild/child/parent dependency test2
      * @runInSeparateProcess
      * @preserveGlobalState disabled
-     *
+     * @group slow
      */
     public function testCompileBlockGrandChildMustCompile_021_2()
     {
@@ -193,7 +193,7 @@ class ExtendsResourceTest extends PHPUnit_Smarty
      * test  grandchild/child/parent dependency test4
      * @runInSeparateProcess
      * @preserveGlobalState disabled
-     *
+     * @group slow
      */
     public function testCompileBlockGrandChildMustCompile_021_4()
     {

tests/UnitTests/TemplateSource/TagTests/BockExtend/CompileBlockExtendsTest.php

@@ -610,7 +610,7 @@ class CompileBlockExtendsTest extends PHPUnit_Smarty
      *
      * @runInSeparateProcess
      * @preserveGlobalState disabled
-     *
+     * @group slow
      */
     public function testCompileBlockGrandChildMustCompile_021_2()
     {
@@ -645,7 +645,7 @@ class CompileBlockExtendsTest extends PHPUnit_Smarty
      *
      * @runInSeparateProcess
      * @preserveGlobalState disabled
-     *
+     * @group slow
      */
     public function testCompileBlockGrandChildMustCompile_021_3()
     {
@@ -670,7 +670,7 @@ class CompileBlockExtendsTest extends PHPUnit_Smarty
      *
      * @runInSeparateProcess
      * @preserveGlobalState disabled
-     *
+     * @group slow
      */
     public function testCompileBlockGrandChildMustCompile_021_32()
     {
@@ -692,6 +692,7 @@ class CompileBlockExtendsTest extends PHPUnit_Smarty
      *
      * @runInSeparateProcess
      * @preserveGlobalState disabled
+     * @group slow
      */
     public function testCompileBlockGrandChildMustCompile_021_4()
     {
@@ -716,6 +717,7 @@ class CompileBlockExtendsTest extends PHPUnit_Smarty
      *
      * @runInSeparateProcess
      * @preserveGlobalState disabled
+     * @group slow
      */
     public function testCompileBlockGrandChildMustCompile_021_42()
     {

tests/UnitTests/TemplateSource/TagTests/Insert/CompileInsertTest.php

@@ -210,6 +210,7 @@ class CompileInsertTest extends PHPUnit_Smarty
      * test insert plugin caching 2
      * @runInSeparateProcess
      * @preserveGlobalState disabled
+     * @group slow
      */
     public function testInsertPluginCaching3_2()
     {

tests/UnitTests/TemplateSource/ValueTests/SmartySpecialVars/Now/SmartyNowTest.php

@@ -35,7 +35,7 @@ class SmartyNowTest extends PHPUnit_Smarty
     }
     /**
      * test {$smarty.now nocache}
-     *
+     * @group slow
      */
     public function testSmartyNowNocache() {
         $this->smarty->setCaching(true);

tests/UnitTests/TemplateSource/ValueTests/Variables/Stream/StreamVariableTest.php

@@ -59,7 +59,7 @@ class StreamVariableTest extends PHPUnit_Smarty
         }
     */
     /**
-     * test no existant stream variable
+     * test no existent stream variable
      */
     //    public function testStreamVariable2()
     //    {