OutputPageTest.php

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<?php

class OutputPageTest extends MediaWikiTestCase {
        const SCREEN_MEDIA_QUERY = 'screen and (min-width: 982px)';
        const SCREEN_ONLY_MEDIA_QUERY = 'only screen and (min-width: 982px)';

        protected function assertTransformCssMediaCase( $args ) {
                $queryData = array();
                if ( isset( $args['printableQuery'] ) ) {
                        $queryData['printable'] = $args['printableQuery'];
                }

                if ( isset( $args['handheldQuery'] ) ) {
                        $queryData['handheld'] = $args['handheldQuery'];
                }

                $fauxRequest = new FauxRequest( $queryData, false );
                $this->setMWGlobals( array(
                        'wgRequest' => $fauxRequest,
                        'wgHandheldForIPhone' => $args['handheldForIPhone']
                ) );

                $actualReturn = OutputPage::transformCssMedia( $args['media'] );
                $this->assertSame( $args['expectedReturn'], $actualReturn, $args['message'] );
        }

        protected function assertTransformCssMediaCaseWithBothHandheldForIPhone( $args ) {
                $message = $args['message'];
                foreach ( array( true, false ) as $handheldForIPhone ) {
                        $args['handheldForIPhone'] = $handheldForIPhone;
                        $stringHandheldForIPhone = var_export( $handheldForIPhone, true );
                        $args['message'] = "$message. \$wgHandheldForIPhone was $stringHandheldForIPhone";
                        $this->assertTransformCssMediaCase( $args );
                }
        }

        public function testPrintRequests() {
                $this->assertTransformCssMediaCaseWithBothHandheldForIPhone( array(
                        'printableQuery' => '1',
                        'media' => 'screen',
                        'expectedReturn' => null,
                        'message' => 'On printable request, screen returns null'
                ) );

                $this->assertTransformCssMediaCaseWithBothHandheldForIPhone( array(
                        'printableQuery' => '1',
                        'media' => self::SCREEN_MEDIA_QUERY,
                        'expectedReturn' => null,
                        'message' => 'On printable request, screen media query returns null'
                ) );

                $this->assertTransformCssMediaCaseWithBothHandheldForIPhone( array(
                        'printableQuery' => '1',
                        'media' => self::SCREEN_ONLY_MEDIA_QUERY,
                        'expectedReturn' => null,
                        'message' => 'On printable request, screen media query with only returns null'
                ) );

                $this->assertTransformCssMediaCaseWithBothHandheldForIPhone( array(
                        'printableQuery' => '1',
                        'media' => 'print',
                        'expectedReturn' => '',
                        'message' => 'On printable request, media print returns empty string'
                ) );
        }

        public function testScreenRequests() {
                $this->assertTransformCssMediaCase( array(
                        'handheldForIPhone' => false,
                        'media' => 'screen',
                        'expectedReturn' => 'screen',
                        'message' => 'On screen request, with handheldForIPhone false, screen media type is preserved'
                ) );

                $this->assertTransformCssMediaCaseWithBothHandheldForIPhone( array(
                        'media' => self::SCREEN_MEDIA_QUERY,
                        'expectedReturn' => self::SCREEN_MEDIA_QUERY,
                        'message' => 'On screen request, screen media query is preserved.'
                ) );

                $this->assertTransformCssMediaCaseWithBothHandheldForIPhone( array(
                        'media' => self::SCREEN_ONLY_MEDIA_QUERY,
                        'expectedReturn' => self::SCREEN_ONLY_MEDIA_QUERY,
                        'message' => 'On screen request, screen media query with only is preserved.'
                ) );

                $this->assertTransformCssMediaCaseWithBothHandheldForIPhone( array(
                        'media' => 'print',
                        'expectedReturn' => 'print',
                        'message' => 'On screen request, print media type is preserved'
                ) );
        }

        public function testHandheld() {
                $this->assertTransformCssMediaCaseWithBothHandheldForIPhone( array(
                        'handheldQuery' => '1',
                        'media' => 'handheld',
                        'expectedReturn' => '',
                        'message' => 'On request with handheld querystring and media is handheld, returns empty string'
                ) );

                $this->assertTransformCssMediaCaseWithBothHandheldForIPhone( array(
                        'handheldQuery' => '1',
                        'media' => 'screen',
                        'expectedReturn' => null,
                        'message' => 'On request with handheld querystring and media is screen, returns null'
                ) );

                // A bit counter-intuitively, $wgHandheldForIPhone should only matter if the query handheld is false or omitted
                $this->assertTransformCssMediaCase( array(
                        'handheldQuery' => '0',
                        'media' => 'screen',
                        'handheldForIPhone' => true,
                        'expectedReturn' => 'screen and (min-device-width: 481px)',
                        'message' => 'With $wgHandheldForIPhone true, screen media type is transformed'
                ) );

                $this->assertTransformCssMediaCase( array(
                        'media' => 'handheld',
                        'handheldForIPhone' => true,
                        'expectedReturn' => 'handheld, only screen and (max-device-width: 480px)',
                        'message' => 'With $wgHandheldForIPhone true, handheld media type is transformed'
                ) );

                $this->assertTransformCssMediaCase( array(
                        'media' => 'handheld',
                        'handheldForIPhone' => false,
                        'expectedReturn' => 'handheld',
                        'message' => 'With $wgHandheldForIPhone false, handheld media type is preserved'
                ) );
        }
}