From f5abf233790b3b0861894a84e0fc271e429365b4 Mon Sep 17 00:00:00 2001
From: daniel <dkinzler@wikimedia.org>
Date: Mon, 11 Mar 2019 14:33:18 +0100
Subject: [PATCH] Add test for Special:page::buildPrevNextNavigation

Change-Id: Ie17221305ec979acebebb62798b83f5d91df1f60
---
 .../includes/specialpage/SpecialPageTest.php  | 80 +++++++++++++++++++
 1 file changed, 80 insertions(+)

diff --git a/tests/phpunit/includes/specialpage/SpecialPageTest.php b/tests/phpunit/includes/specialpage/SpecialPageTest.php
index 2eddb01e8e..ec4bf0fc43 100644
--- a/tests/phpunit/includes/specialpage/SpecialPageTest.php
+++ b/tests/phpunit/includes/specialpage/SpecialPageTest.php
@@ -1,5 +1,7 @@
 <?php
 
+use Wikimedia\TestingAccessWrapper;
+
 /**
  * @covers SpecialPage
  *
@@ -101,4 +103,82 @@ class SpecialPageTest extends MediaWikiTestCase {
 		$this->assertTrue( true );
 	}
 
+	public function provideBuildPrevNextNavigation() {
+		yield [ 0, 20, false, false ];
+		yield [ 17, 20, false, false ];
+		yield [ 0, 17, false, false ];
+		yield [ 0, 20, true, 'Foo' ];
+		yield [ 17, 20, true, 'Föö_Bär' ];
+	}
+
+	/**
+	 * @dataProvider provideBuildPrevNextNavigation
+	 */
+	public function testBuildPrevNextNavigation( $offset, $limit, $atEnd, $subPage ) {
+		$this->setUserLang( Language::factory( 'qqx' ) ); // disable i18n
+
+		$specialPage = new SpecialPage( 'Watchlist' );
+		$specialPage = TestingAccessWrapper::newFromObject( $specialPage );
+
+		$html = $specialPage->buildPrevNextNavigation(
+			$offset,
+			$limit,
+			[ 'x' => 25 ],
+			$atEnd,
+			$subPage
+		);
+
+		$this->assertStringStartsWith( '(viewprevnext:', $html );
+
+		preg_match_all( '!<a.*?</a>!', $html, $m, PREG_PATTERN_ORDER );
+		$links = $m[0];
+
+		foreach ( $links as $a ) {
+			if ( $subPage ) {
+				$this->assertContains( 'Special:Watchlist/' . wfUrlencode( $subPage ), $a );
+			} else {
+				$this->assertContains( 'Special:Watchlist', $a );
+				$this->assertNotContains( 'Special:Watchlist/', $a );
+			}
+			$this->assertContains( 'x=25', $a );
+		}
+
+		$i = 0;
+
+		if ( $offset > 0 ) {
+			$this->assertContains(
+				'limit=' . $limit . '&amp;offset=' . max( 0, $offset - $limit ) . '&amp;',
+				$links[ $i ]
+			);
+			$this->assertContains( 'title="(prevn-title: ' . $limit . ')"', $links[$i] );
+			$this->assertContains( 'class="mw-prevlink"', $links[$i] );
+			$this->assertContains( '>(prevn: ' . $limit . ')<', $links[$i] );
+			$i += 1;
+		}
+
+		if ( !$atEnd ) {
+			$this->assertContains(
+				'limit=' . $limit . '&amp;offset=' . ( $offset + $limit ) . '&amp;',
+				$links[ $i ]
+			);
+			$this->assertContains( 'title="(nextn-title: ' . $limit . ')"', $links[$i] );
+			$this->assertContains( 'class="mw-nextlink"', $links[$i] );
+			$this->assertContains( '>(nextn: ' . $limit . ')<', $links[$i] );
+			$i += 1;
+		}
+
+		$this->assertCount( 5 + $i, $links );
+
+		$this->assertContains( 'limit=20&amp;offset=' . $offset, $links[$i] );
+		$this->assertContains( 'title="(shown-title: 20)"', $links[$i] );
+		$this->assertContains( 'class="mw-numlink"', $links[$i] );
+		$this->assertContains( '>20<', $links[$i] );
+		$i += 4;
+
+		$this->assertContains( 'limit=500&amp;offset=' . $offset, $links[$i] );
+		$this->assertContains( 'title="(shown-title: 500)"', $links[$i] );
+		$this->assertContains( 'class="mw-numlink"', $links[$i] );
+		$this->assertContains( '>500<', $links[$i] );
+	}
+
 }
-- 
2.20.1