GlobalVarConfigTest.php

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<?php

class GlobalVarConfigTest extends MediaWikiTestCase {

    public function testNewInstance() {
        $config = GlobalVarConfig::newInstance();
        $this->assertInstanceOf( 'GlobalVarConfig', $config );
        $this->maybeStashGlobal( 'wgBaz' );
        $GLOBALS['wgBaz'] = 'somevalue';
        // Check prefix is set to 'wg'
        $this->assertEquals( 'somevalue', $config->get( 'Baz' ) );
    }

    public function testConstructor( $prefix ) {
        $var = $prefix . 'GlobalVarConfigTest';
        $rand = wfRandomString();
        $this->maybeStashGlobal( $var );
        $GLOBALS[$var] = $rand;
        $config = new GlobalVarConfig( $prefix );
        $this->assertInstanceOf( 'GlobalVarConfig', $config );
        $this->assertEquals( $rand, $config->get( 'GlobalVarConfigTest' ) );
    }

    public static function provideConstructor() {
        return array(
            array( 'wg' ),
            array( 'ef' ),
            array( 'smw' ),
            array( 'blahblahblahblah' ),
            array( '' ),
        );
    }

    public function testHas() {
        $this->maybeStashGlobal( 'wgGlobalVarConfigTestHas' );
        $GLOBALS['wgGlobalVarConfigTestHas'] = wfRandomString();
        $this->maybeStashGlobal( 'wgGlobalVarConfigTestNotHas' );
        $config = new GlobalVarConfig();
        $this->assertTrue( $config->has( 'GlobalVarConfigTestHas' ) );
        $this->assertFalse( $config->has( 'GlobalVarConfigTestNotHas' ) );
    }

    public static function provideGet() {
        $set = array(
            'wgSomething' => 'default1',
            'wgFoo' => 'default2',
            'efVariable' => 'default3',
            'BAR' => 'default4',
        );

        foreach ( $set as $var => $value ) {
            $GLOBALS[$var] = $value;
        }

        return array(
            array( 'Something', 'wg', 'default1' ),
            array( 'Foo', 'wg', 'default2' ),
            array( 'Variable', 'ef', 'default3' ),
            array( 'BAR', '', 'default4' ),
            array( 'ThisGlobalWasNotSetAbove', 'wg', false )
        );
    }

    public function testGet( $name, $prefix, $expected ) {
        $config = new GlobalVarConfig( $prefix );
        if ( $expected === false ) {
            $this->setExpectedException( 'ConfigException', 'GlobalVarConfig::get: undefined option:' );
        }
        $this->assertEquals( $config->get( $name ), $expected );
    }

    public static function provideSet() {
        return array(
            array( 'Foo', 'wg', 'wgFoo' ),
            array( 'SomethingRandom', 'wg', 'wgSomethingRandom' ),
            array( 'FromAnExtension', 'eg', 'egFromAnExtension' ),
            array( 'NoPrefixHere', '', 'NoPrefixHere' ),
        );
    }

    private function maybeStashGlobal( $var ) {
        if ( array_key_exists( $var, $GLOBALS ) ) {
            // Will be reset after this test is over
            $this->stashMwGlobals( $var );
        }
    }

    public function testSet( $name, $prefix, $var ) {
        $this->hideDeprecated( 'GlobalVarConfig::set' );
        $this->maybeStashGlobal( $var );
        $config = new GlobalVarConfig( $prefix );
        $random = wfRandomString();
        $config->set( $name, $random );
        $this->assertArrayHasKey( $var, $GLOBALS );
        $this->assertEquals( $random, $GLOBALS[$var] );
    }
}