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StubObjectTest.php
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StubObjectTest.php
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<?php
/**
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License along
* with this program; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
* http://www.gnu.org/copyleft/gpl.html
*
* @file
*/
use MediaWiki\StubObject\StubObject;
/**
* Testing the magic for __get(), __set(), and __call() for our
* example global, $wgDummy, which would be an instance
* of DemoStubbed but is wrapped in a MediaWiki\StubObject\StubObject
* @author DannyS712
*
* @covers \MediaWiki\StubObject\StubObject
*/
class StubObjectTest extends MediaWikiIntegrationTestCase {
protected function setUp(): void {
parent::setUp();
global $wgDummy;
$wgDummy = new StubObject(
'wgDummy',
[ __CLASS__, 'factory' ]
);
}
/**
* Static factory method for creating the underlying global, which is
* a DemoStubbed with the starting value of 5
*/
public static function factory(): DemoStubbed {
return new DemoStubbed( 5 );
}
public function testCallMagic() {
global $wgDummy;
$this->assertInstanceOf(
StubObject::class,
$wgDummy,
'Global starts as stub object'
);
$this->assertSame(
5,
$wgDummy->getNum(),
'__call() based on id set in ::setUp()'
);
$this->assertInstanceOf(
DemoStubbed::class,
$wgDummy,
'__call() resulted in unstubbing'
);
}
public function testGetMagic() {
// MediaWiki\StubObject\StubObject::__get() returning DemoStubbed::$num
global $wgDummy;
$this->assertInstanceOf(
StubObject::class,
$wgDummy,
'Global starts as stub object'
);
$this->assertSame(
5,
$wgDummy->num,
'__get() based on id set in ::setUp()'
);
$this->assertInstanceOf(
DemoStubbed::class,
$wgDummy,
'__get() resulted in unstubbing'
);
}
public function testGetMagic_virtual() {
// MediaWiki\StubObject\StubObject::__get() calling DemoStubbed::__get()
global $wgDummy;
$this->assertInstanceOf(
StubObject::class,
$wgDummy,
'Global starts as stub object'
);
$this->assertSame(
10,
$wgDummy->doubleNum,
'__get() a virtual property based on id set in ::setUp()'
);
$this->assertInstanceOf(
DemoStubbed::class,
$wgDummy,
'__get() resulted in unstubbing'
);
}
public function testSetMagic() {
// MediaWiki\StubObject\StubObject::__set() changing DemoStubbed::$num
global $wgDummy;
$this->assertInstanceOf(
StubObject::class,
$wgDummy,
'Global starts as stub object'
);
$wgDummy->num = 100;
$this->assertInstanceOf(
DemoStubbed::class,
$wgDummy,
'__set() resulted in unstubbing'
);
$this->assertSame(
100,
$wgDummy->num,
'__set() changed the value'
);
}
public function testSetMagic_virtual() {
// MediaWiki\StubObject\StubObject::__set() calling DemoStubbed::__set()
global $wgDummy;
$this->assertInstanceOf(
StubObject::class,
$wgDummy,
'Global starts as stub object'
);
$wgDummy->doubleNum = 100;
$this->assertInstanceOf(
DemoStubbed::class,
$wgDummy,
'__set() resulted in unstubbing'
);
$this->assertSame(
50,
$wgDummy->num,
'__set() changed the value'
);
}
}
/**
* This is the object that we are stubbing so we can test the various magic methods
*/
class DemoStubbed {
/** @var int */
public $num;
public function __construct( int $num ) {
$this->num = $num;
}
public function getNum(): int {
return $this->num;
}
/**
* Magic handling for retrieving fake property "doubleNum"
*
* @param string $field
* @return mixed
*/
public function __get( $field ) {
if ( $field === 'doubleNum' ) {
return ( 2 * $this->num );
}
trigger_error( 'Inaccessible property via __get(): ' . $field, E_USER_NOTICE );
}
/**
* Magic handling for setting fake property "doubleNum"
*
* @param string $field
* @param mixed $value
*/
public function __set( $field, $value ) {
if ( $field === 'doubleNum' ) {
$this->num = (int)( $value / 2 );
return;
}
trigger_error( 'Inaccessible property via __set(): ' . $field, E_USER_NOTICE );
}
}

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