From c182df6e38d50c449ff9c4d329088e5266ce041d Mon Sep 17 00:00:00 2001
From: TK-999 <tk.999.wikia@gmail.com>
Date: Wed, 15 Feb 2017 11:34:52 +0100
Subject: [PATCH] In Autopromote skip edit count lookup if requirement is 0 or
 invalid

Autopromote makes a DB call to fetch user edit count when checking edit count requirements. We can skip this call if requirement is set to 0 or invalid (less than 0).

Bug: T157718
Change-Id: I7bcfa6e7e4991fe7b48bef84ad24621564261abc
---
 includes/Autopromote.php                   |  8 +++-
 tests/phpunit/includes/AutopromoteTest.php | 53 ++++++++++++++++++++++
 2 files changed, 60 insertions(+), 1 deletion(-)
 create mode 100644 tests/phpunit/includes/AutopromoteTest.php

diff --git a/includes/Autopromote.php b/includes/Autopromote.php
index 56fbb07f88..a01465e9ae 100644
--- a/includes/Autopromote.php
+++ b/includes/Autopromote.php
@@ -177,7 +177,13 @@ class Autopromote {
 				}
 				return false;
 			case APCOND_EDITCOUNT:
-				return $user->getEditCount() >= $cond[1];
+				$reqEditCount = $cond[1];
+
+				// T157718: Avoid edit count lookup if specified edit count is 0 or invalid
+				if ( $reqEditCount <= 0 ) {
+					return true;
+				}
+				return $user->getEditCount() >= $reqEditCount;
 			case APCOND_AGE:
 				$age = time() - wfTimestampOrNull( TS_UNIX, $user->getRegistration() );
 				return $age >= $cond[1];
diff --git a/tests/phpunit/includes/AutopromoteTest.php b/tests/phpunit/includes/AutopromoteTest.php
new file mode 100644
index 0000000000..785aa4e3d4
--- /dev/null
+++ b/tests/phpunit/includes/AutopromoteTest.php
@@ -0,0 +1,53 @@
+<?php
+
+class AutopromoteTest extends MediaWikiTestCase {
+	/**
+	 * T157718: Verify Autopromote does not perform edit count lookup if requirement is 0 or invalid
+	 *
+	 * @see Autopromote::getAutopromoteGroups()
+	 * @dataProvider provideEditCountsAndRequirements
+	 * @param int $editCount edit count of user to be checked by Autopromote
+	 * @param int $requirement edit count required to autopromote user
+	 */
+	public function testEditCountLookupIsSkippedIfRequirementIsZero( $editCount, $requirement ) {
+		$this->setMwGlobals( [
+			'wgAutopromote' => [
+				'autoconfirmed' => [ APCOND_EDITCOUNT, $requirement ]
+			]
+		] );
+
+		/** @var PHPUnit_Framework_MockObject_MockObject|User $userMock */
+		$userMock = $this->getMock( 'User', [ 'getEditCount' ] );
+		if ( $requirement > 0 ) {
+			$userMock->expects( $this->once() )
+				->method( 'getEditCount' )
+				->willReturn( $editCount );
+		} else {
+			$userMock->expects( $this->never() )
+				->method( 'getEditCount' );
+		}
+
+		$result = Autopromote::getAutopromoteGroups( $userMock );
+		if ( $editCount >= $requirement ) {
+			$this->assertContains(
+				'autoconfirmed',
+				$result,
+				'User must be promoted if they meet edit count requirement'
+			);
+		} else {
+			$this->assertNotContains(
+				'autoconfirmed',
+				$result,
+				'User must not be promoted if they fail edit count requirement'
+			);
+		}
+	}
+
+	public static function provideEditCountsAndRequirements() {
+		return [
+			'user with sufficient editcount' => [ 100, 10 ],
+			'user with insufficient editcount' => [ 4, 10 ],
+			'edit count requirement set to 0' => [ 1, 0 ],
+		];
+	}
+}
-- 
2.20.1