Unit Tests: WP_UnitTest_Generator_Sequence needs a static incrementer - otherwise, it assumes every test class is a reset, which it no longer is (it is now static).

While we're at it, remove unnecessary `tearDown()` code.

See #30017, #33968.



git-svn-id: https://develop.svn.wordpress.org/trunk@35244 602fd350-edb4-49c9-b593-d223f7449a82

tests/phpunit/tests/user/slashes.php

@@ -9,7 +9,7 @@ class Tests_User_Slashes extends WP_UnitTestCase {
 	function setUp() {
 		parent::setUp();
 		$this->author_id = self::factory()->user->create( array( 'role' => 'administrator' ) );
-		$this->old_current_user = get_current_user_id();
+
 		wp_set_current_user( $this->author_id );
 
 		// it is important to test with both even and odd numbered slashes as
@@ -23,11 +23,6 @@ class Tests_User_Slashes extends WP_UnitTestCase {
 		$this->slash_7 = 'String with 7 slashes \\\\\\\\\\\\\\';
 	}
 
-	function tearDown() {
-		wp_set_current_user( $this->old_current_user );
-		parent::tearDown();
-	}
-
 	/**
 	 * Tests the controller function that expects slashed data
 	 *