public function testRexConfig()
{
$key = 'aTestKey';
// initial test on empty config
$this->assertFalse(rex::hasConfig($key), 'the key does not exists at first');
$this->assertNull(rex::getConfig($key), 'getting non existing key returns null');
$this->assertEquals(rex::getConfig($key, 'defVal'), 'defVal', 'getting non existing key returns a given default');
$this->assertFalse(rex::removeConfig($key), 'remove non existing key returns false');
// test after setting a value
$this->assertFalse(rex::setConfig($key, 'aVal'), 'setting non-existant value returns false');
$this->assertEquals(rex::getConfig($key, 'defVal'), 'aVal', 'getting existing key returns its value');
$this->assertTrue(rex::hasConfig($key), 'setted value exists');
// test after re-setting a value
$this->assertTrue(rex::setConfig($key, 'aOtherVal'), 're-setting a value returns true');
$this->assertEquals(rex::getConfig($key, 'defaOtherVal'), 'aOtherVal', 'getting existing key returns its value');
// test after cleanup
$this->assertTrue(rex::removeConfig($key), 'remove a existing key returns true');
$this->assertFalse(rex::hasConfig($key), 'the key does not exists after removal');
$this->assertNull(rex::getConfig($key), 'getting non existing key returns null');
$this->assertEquals(rex::getConfig($key, 'defVal'), 'defVal', 'getting non existing key returns a given default');
}
